Best Sleep Position for Side Sleepers
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Most people do not choose their sleep position the way they choose a meal. They simply fall asleep in the position that feels natural, and they wake up in that same position, or close to it, night after night. For a very large number of adults, that position is on their side. Some lie curled up with their knees bent, some lie almost straight with one leg slightly forward, and some switch from one side to the other during the night without ever waking up. If you are one of these people, you have probably wondered whether you are doing it right, and whether a small change could help you wake up with less stiffness in your neck, less ache in your shoulder, and a back that feels rested instead of tight. The good news is that side sleeping is a sound, normal way to sleep, and it does not need a complicated system to work well. It needs three things to be right: your head supported at the right height, your spine kept in a fairly straight line, and your hips and knees given a little help so they do not twist during the night.
The reason side sleeping works so well for so many people is simple. When you lie on your back, your tongue and the soft tissues at the back of your throat can fall backwards, which is one reason some people snore more on their backs. When you lie on your stomach, you have to turn your head sharply to one side to breathe, and that twist can leave your neck sore by morning. Lying on your side avoids both problems. Your airway stays open more easily, your head can rest in a straight line with your spine, and your body weight spreads across your shoulder and hip instead of pressing on one small point. That is why many people who snore find they snore less on their side, why many people with a blocked nose find side sleeping easier, and why people who wake up with a sore neck on their back sometimes feel better after a few nights on their side. None of this makes side sleeping perfect for everyone, and no single position suits every body, but for most people it is a strong starting point, and the small details around it are what turn a habit into genuinely restful sleep.
It also helps to understand that there is no single “best” side position that fits every person. A tall person with broad shoulders needs a thicker pillow than a small person with narrow shoulders, because the pillow has to fill a bigger gap between the head and the mattress. A person with a soft mattress will sink in further at the shoulder and hip, which changes the angle of the spine. A person who sleeps with a partner, a child, or a pet in the bed has less room to stretch out. Your age matters too. A young adult may be comfortable in almost any position, while an older person with a stiff shoulder or an aching hip may need to be more careful. The advice in this article is general information, not personal advice for a specific condition. It explains how side sleeping works, what usually goes wrong, and what simple changes most people can try at home. If you have ongoing pain, numbness, or a health condition that affects your sleep, a qualified health professional is the right person to ask.
Why So Many People Sleep on Their Side
Ask a room full of adults how they sleep, and most of them will say they sleep on their side. This is not a fashion or a trend. It is something the body seems to settle into on its own. Part of the reason is comfort. Lying on your side feels sheltered, a little like curling up, and for many people that feeling helps them relax. A child who falls asleep on a sofa usually curls onto their side. An older person who reads in bed often drifts off on their side. Even people who start the night on their back often roll onto their side during the night without noticing. The body seems to like the balance of it: one shoulder takes some weight, one hip takes some weight, and the rest of the body rests between them.
There is also a practical reason. Side sleeping makes breathing easier for many people. When you lie flat on your back, gravity pulls the soft parts of your throat backwards, and the airway can narrow a little. That narrowing is one reason snoring is often louder on the back, and it is also why some people wake up with a dry mouth or a feeling that they did not sleep deeply. On your side, the airway stays more open, because gravity is pulling sideways rather than backwards. People with a cold, a blocked nose, or a stuffy feeling in the chest often find this out for themselves. They turn onto their side without thinking, and breathing feels a little easier. The same applies to people who have eaten a large evening meal. Lying flat on the back after a heavy dinner can feel uncomfortable, because the stomach is full and the body is flat. Lying on the side often feels gentler, and many people notice that a feeling of fullness or mild heartburn settles more quickly that way.
Another reason side sleeping is common is that it suits a tired body at the end of a long day. If you have spent the day on your feet, carrying things, or sitting at a desk, your lower back has been working all day. Lying on your side with your knees slightly bent takes the weight off the lower back in a way that lying flat does not always manage. The bent knees relax the muscles around the hips, and the spine can rest in a gentle curve instead of being pressed flat. This is why so many people who have had a hard physical day end up curled on their side without deciding to. It is also why side sleeping is a common position during pregnancy, when lying flat on the back can feel uncomfortable as the months go on, and a pillow between the knees can make a real difference. The body, in short, often knows what it needs, and for a great many people, what it needs is to lie on its side.
Left Side or Right Side: Does It Matter?
The most common question side sleepers ask, after the pillow question, is whether the left side is better than the right, or the other way around. The honest answer is that for most healthy people, it does not matter very much, and comfort should come first. If you sleep well on your right side and wake up feeling rested, there is no reason to force yourself onto your left. Your body will usually tell you which side it prefers, and that preference often changes from night to night. Some people sleep on one side for the first half of the night and switch to the other side after they wake briefly. That switching is normal and healthy. Staying locked in one position all night is not a goal. Movement during sleep is natural, and a body that shifts a little is a body that is avoiding pressure on one spot for too long.
That said, there are a few situations where one side has a small advantage, and it is worth knowing about them. Many people find that lying on their left side feels easier after a heavy meal, or when they have a feeling of heartburn. The reason is the shape of the stomach and the way it sits in the body. The stomach curves to the left, and when you lie on your left side, the contents of the stomach sit lower and are less likely to press upwards towards the chest. This is a small effect, not a cure, and it will not help everyone, but if you often notice discomfort after dinner, trying the left side for a few nights is a simple thing to test. On the other hand, some people find that lying on their left side makes them more aware of their heartbeat, because the heart sits slightly to the left of the centre of the chest. They can feel it beating against the mattress, and that feeling keeps them awake. If that happens to you, it is not a sign of a problem on its own, but it is a good reason to sleep on your right side instead, where the feeling is usually less noticeable.
There is also the question of a sore shoulder. If you have a shoulder that aches, sleeping on that side will press your body weight onto it all night, and you will probably wake up with more pain. In that case, the other side is the better choice, and a pillow tucked in front of your chest can stop you from rolling back onto the sore side during the night. The same logic applies to a sore hip. If your right hip aches, lying on your left side takes the pressure off it. This sounds obvious, but many people keep sleeping on their sore side out of habit, and they do not connect the morning ache with the side they slept on. A simple test is to notice, for three or four nights, which side you fall asleep on and how you feel in the morning. If the mornings are worse after one side, you have your answer, and you can use a body pillow or a rolled blanket behind your back to make staying on the comfortable side easier.
The Pillow Problem: Keeping Your Neck Straight
If side sleeping has one weak point, it is the pillow. Get the pillow wrong and the whole position falls apart, because your neck will spend the night bent at an angle, and you will wake up with a stiff neck, a headache, or pain running down into your shoulder. The job of a pillow for a side sleeper is very specific. It has to fill the gap between your head and the mattress, and that gap is exactly the width of your shoulder. When you lie on your side, your head is held away from the mattress by your shoulder, so the pillow must be thick enough to bridge that distance. If the pillow is too thin, your head drops down towards the mattress, your neck bends downwards, and the muscles on the upper side of your neck are stretched all night. If the pillow is too thick, your head is pushed upwards, your neck bends the other way, and the muscles on the lower side are squeezed. Either mistake leaves you sore in the morning, and many people blame their mattress or their sleeping position when the real problem is a pillow that is the wrong height.
The right height depends on your body. A person with broad shoulders needs a firmer, thicker pillow. A person with narrow shoulders needs a thinner one. A person with a soft mattress needs a slightly thicker pillow, because the shoulder sinks into the mattress and the gap becomes smaller, while a person with a firm mattress needs the full height. The simplest way to check is to lie on your side on your bed, in your usual position, and ask someone to look at you from behind, or to take a photo. Your nose, the centre of your neck, and the middle of your spine should form a fairly straight line. Your head should not be tipped up towards the ceiling or drooping down towards the mattress. Your ear should sit roughly above your shoulder. If your head is clearly higher or lower than that line, the pillow is the wrong height, and changing it is the first thing to try before buying anything else.
The type of pillow matters less than the height, but it is still worth thinking about. A pillow that is too soft will flatten under the weight of your head during the night, so it may feel right when you first lie down and wrong by morning. A pillow that is very firm may feel hard against your ear and cheek. Many side sleepers do well with a pillow that holds its shape but still gives a little, and some people use two pillows stacked together, or a folded towel under a thin pillow, to get the height exactly right. There is no shame in that. The goal is not to own an expensive pillow. The goal is to wake up without a sore neck. If you wake up and your first thought is that your neck feels stiff, try a different pillow height for a few nights before you decide anything else. A small change here often makes a bigger difference than a new mattress.
Your Hips, Knees and Lower Back
The pillow gets most of the attention, but the lower half of the body matters just as much. When you lie on your side, your top leg tends to fall forward and down, and that movement twists your hips and your lower back. Over a whole night, that twist can leave the lower back feeling tight and the hips feeling sore. You may not notice it while you are asleep, but you will notice it when you stand up in the morning and your back feels stiff for the first half hour. The fix is simple and cheap, and it is the single most useful trick for side sleepers: put a pillow between your knees. A small, fairly firm pillow works best, and it does not need to be a special product. A folded blanket or a small cushion will do. The pillow keeps your top leg level with your bottom leg, so your hips stay straight, your pelvis does not twist, and your lower back can rest in a neutral position all night.
Your knees also matter. Sleeping with your legs completely straight on your side can pull on the lower back, because the muscles at the front of the hips stay stretched. Sleeping with your knees bent a little, in a relaxed curl, lets those muscles relax. You do not need to curl up tightly like a ball. A gentle bend, with your knees drawn up a little towards your chest, is enough. Think of the way a person naturally lies when they are cold and comfortable: knees bent, body relaxed, one arm in front of the chest. That loose curl is the shape the body seems to want. If you sleep with a partner, a pillow between your knees also stops your top leg from pressing on them, which is a small kindness that both of you will notice.
Your mattress plays a part here too. A mattress that is too firm will not give way at your shoulder and hip, so those two points take all your weight and can become sore. A mattress that is too soft will let your shoulder and hip sink too far, and your spine will curve downwards in the middle like a hammock, which strains the lower back. Most side sleepers do best on a mattress that is medium in firmness, soft enough to let the shoulder and hip sink in a little, firm enough to hold the waist up. You do not need to buy a new mattress to test this. If you wake up with sore shoulders or hips, try adding a soft mattress topper. If you wake up with a sore lower back, try a firmer surface for a few nights, even a folded blanket under your side of the bed, and see whether the morning feels different. The morning is the test that matters. A good night for a side sleeper is one you do not think about when you wake up.
When Side Sleeping Feels Uncomfortable
Side sleeping is a good position for most people, but it is not free of problems, and it is honest to name them. The most common one is shoulder pain. When you lie on your side, your whole upper body presses down on one shoulder. If that shoulder is already sore, or if the mattress is very firm, the pressure can build up and wake you during the night, or leave you with an ache that lasts into the morning. The usual answer is to change sides more often, to use a softer surface under the shoulder, and to avoid tucking your lower arm under your head, which squeezes the shoulder joint. Resting your lower arm straight out in front of you, or bent loosely in front of your chest, is kinder to the shoulder than trapping it underneath your head.
Hip pain is the second common complaint. Like the shoulder, the hip takes a lot of weight in side sleeping, and if the mattress is hard, the bony point of the hip can become sore. A softer mattress topper helps here, and so does the pillow between the knees, because it stops the top leg from adding its weight to the bottom hip. Some people also find that a small, soft pillow under the waist, filling the gap between the ribs and the hip, helps the spine stay straight and takes pressure off the hip. This is a trick worth trying if your waist is narrow and your hips are wide, because the mattress supports your hip and your shoulder but leaves your waist hanging, and that gap can make the spine sag.
A third problem is numbness or tingling in the arm or hand. This usually happens when the lower arm is trapped under the body, or when the pillow presses on the side of the neck in a way that squeezes the nerves running down the arm. It is often a sign that the pillow is the wrong height, or that the arm is in a bad position. Moving the arm out from under the body and resting it in front of the chest usually fixes it. If the numbness happens often, lasts into the day, or comes with weakness in the hand, that is different, and it is worth talking to a health professional rather than trying to fix it with pillows alone. The same applies to chest discomfort, breathlessness, or any new and worrying symptom that appears at night. General information can explain the common problems, but it cannot replace a proper check when something feels wrong.
How to Make Side Sleeping Work Night After Night
A good side sleeping position is not a one-night experiment. It is a small routine that you set up once and then let run. Start with the pillow. Find the height that keeps your head in line with your spine, and keep that pillow for sleeping only, so it holds its shape. Then add the knee pillow, and keep it within reach on the bed so you can find it in the dark without waking properly. Then think about your mattress. If it is very old, very soft in the middle, or very hard, no pillow will fully make up for it, and that is worth knowing before you spend money on accessories. A mattress that sags in the middle will twist your spine no matter what you do, and replacing it, when you can, is a better use of money than a collection of special pillows.
Your evening routine matters too. A body that goes to bed tense, after a long day of sitting or heavy work, will find any position less comfortable than a body that has moved and relaxed a little. A short walk after dinner, a few minutes of gentle stretching, or simply lying down a little earlier and giving yourself time to settle can make the night easier. The room matters as well. A room that is too hot will make you turn and toss, and a room that is too cold will make you curl up tightly, which strains the neck and shoulders. Most people sleep best in a cool room with light bedding, so they can move freely without getting tangled. Heavy blankets that pin your legs down can force your hips into a twist, so light, loose bedding suits side sleepers better than a heavy cover that holds you in one shape.
Finally, give any change a few nights. The body does not adjust to a new pillow or a new position in one night. The first night with a knee pillow may feel strange, and you may kick it away in your sleep. The second night may feel a little better. By the fourth or fifth night, you will know whether the mornings are easier. Keep a simple note for a week: which side you fell asleep on, whether your neck or back felt sore in the morning, and whether you woke up during the night. That small note will tell you more than any article can, because it is about your body, your bed, and your nights. Side sleeping is not a rule to follow. It is a habit to shape until it fits you, and when it fits, you will know, because you will stop thinking about your sleep position at all, and simply wake up rested.
My Take:
If you ask me what I think about side sleeping, my answer is simple: it is the position most bodies choose for themselves, and that is usually a good sign. I do not think we should fight what the body does naturally. When a person falls asleep on their side night after night without thinking about it, that is not a mistake to correct. It is the body finding a shape that lets it breathe, rest, and stay comfortable for hours. I think the real question is not whether side sleeping is good or bad. The real question is whether the bed is helping the position or working against it, and in my experience, the bed is usually the problem, not the sleeper. A pillow that is too flat, a mattress that is too hard, a blanket that pins the legs down: these are the things that turn a good position into a sore morning, and they are all fixable without spending a lot of money.
I think the pillow is where most people should start, because it is the cheapest fix and the one that makes the biggest difference. I have seen people buy a new mattress because their neck hurt every morning, when a thicker pillow would have solved it in one night. The test is so simple that anyone can do it. Lie on your side, look at the line of your head and spine, and ask whether your head is straight. If it is not straight, change the pillow. I would rather a person try three pillows they already own, stacked in different ways, than buy one expensive pillow that a shop told them was right for side sleepers. Shops sell pillows. Your neck tells the truth. Listen to your neck in the morning, not to the label on the pillow.
The pillow between the knees is the second thing I would tell a friend about, because almost nobody tries it until someone suggests it, and almost everyone who tries it keeps doing it. It looks like a small thing, and it is a small thing, but it changes the shape of the whole lower body. Without it, the top leg falls forward and twists the lower back. With it, the hips stay level and the back can rest. I think of it as the cheapest piece of health equipment a person can own. It costs nothing if you use a cushion you already have, and it can save you from waking up stiff day after day. If you try it for one night and it feels strange, try it for four more nights. The first night is not a fair test, because anything new feels strange on the first night. By the fifth night, your body will have decided, and the mornings will have told you the answer.
I also think we should be honest about the limits of side sleeping. It is a good position, but it is not a cure for everything, and it will not fix a mattress that has sagged in the middle, a shoulder that is injured, or a sleep problem that has been going on for months. I worry when people read one article and expect a new position to solve a pain that needs proper attention. A sore neck that lasts for weeks, numbness that does not go away in the morning, or breathlessness at night are not pillow problems. They are reasons to talk to a health professional. I would rather say that plainly than pretend a knee pillow can fix everything. General advice is useful for the everyday aches that come from a bad setup, and it is not a replacement for care when something is really wrong.
There is something else I notice about side sleeping, and it is about how we think of sleep itself. We tend to think of sleep as a single thing that happens at night, and we forget that the day before shapes it. A person who has sat at a desk all day, or carried heavy loads, or spent the evening on a screen, will find any position less comfortable than a person who has walked, stretched, and wound down slowly. I think the evening matters as much as the pillow. A short walk after dinner, a quiet hour before bed, a room that is cool and dark: these small things make side sleeping work better, because they let the body arrive at the bed already relaxed. If you go to bed tense, your shoulders will be tense all night, whatever side you lie on. The position is only part of the story. The day is the rest of it.
I think about children and older people here too, because they are the ones who most often sleep on their sides, and they are the ones who most often get ignored in sleep advice. A child who curls up on their side is doing what feels safe and comfortable, and the best thing a parent can do is give them a pillow that fits their small shoulders, not an adult pillow that pushes their head up at an angle. An older person with a stiff hip or a sore shoulder needs the same care, and a little more patience, because their body is less forgiving of a bad setup. I do not think sleep advice should be written only for healthy young adults. It should work for a grandmother with an aching hip and a schoolchild with a small pillow, and the rules are the same for both: head straight, knees supported, body relaxed, and no pressure on the sore spot.
The left side or right side question is one I hear often, and my view is that comfort should win. I know there are small reasons to prefer the left side after a heavy meal, and small reasons to prefer the right side if you can feel your heartbeat on the left, but these are small reasons, and they should not become rules that keep you awake. If you lie on your left side because an article told you to, and you spend the night feeling uncomfortable, you have followed the article and lost the sleep. That is a bad trade. Sleep is the goal. The side is only a means to it. Lie on the side that lets you fall asleep, and if you wake up in the night, turn over. Your body knows how to do this. Let it.
I also want to say something about the money side of this, because sleep has become an industry, and the industry wants you to believe that good sleep needs an expensive mattress, an expensive pillow, and a set of special products. I do not believe that. A good side sleeping setup can be built from things most homes already have: a pillow at the right height, a cushion between the knees, a folded blanket where the waist needs support, and light bedding that lets you move. If your mattress is old and sagging, then yes, a new one matters, and it is worth saving for. But before you spend money, try the free changes. Try the pillow height. Try the knee cushion. Try sleeping on the other side for a few nights. These cost nothing, and they will tell you what actually helps, so that if you do spend money later, you spend it on the right thing.
My final view is a calm one. Side sleeping is a good, natural position, and for most people it needs only a little care to work well. Keep your head straight with the right pillow. Keep your knees supported so your back does not twist. Give your shoulder and hip a surface that is soft enough to be kind and firm enough to hold you up. Change sides when you need to, and do not force yourself to stay in one position all night. Pay attention to your mornings, because they will tell you whether the setup is right. And if the mornings keep hurting despite all of this, ask a health professional, because some problems are not about position at all. That is my honest take. It is not dramatic, and it is not a secret. It is simply what works: a straight neck, a supported knee, and a bed that fits the body sleeping in it. When those three things are right, side sleeping does what it is supposed to do, which is to let you sleep and wake up ready for the day. If a friend asked me how to sleep better on their side, I would not start with a lecture. I would ask them to show me their pillow, and I would ask them how their neck feels in the morning. Those two answers usually tell the whole story. Then I would hand them a cushion for their knees and tell them to try it for a week. I would tell them to notice which side they wake up on, and whether the mornings are easier. I would tell them not to buy anything on the first day. Sleep is patient work. It rewards small changes made slowly, and it punishes big changes made in a hurry. A pillow, a cushion, a few quiet evenings, and a week of paying attention: that is my whole plan, and I think it is enough for most people. I also think about sharing a bed, because most side sleepers do not sleep alone, and the position has to work for two people. A knee pillow helps here too, because it stops your top leg from pressing into your partner, and a body pillow between you can stop you from rolling onto your partner’s side in the night. If your partner sleeps on their back and you sleep on your side, you will need different pillows, and that is fine. There is no rule that says a couple must use the same pillow. Each person should have the pillow that fits their own shoulders. I think many couples argue about sleep without realising that the argument is really about pillows. One person is cold, the other is hot. One person needs a thick pillow, the other needs a thin one. Solving those small things separately is better than arguing about who is keeping whom awake.
Travelling is another time when side sleeping is tested. A hotel pillow is almost never the right height, and a night on a strange mattress can leave you stiff even if your bed at home is perfect. When I travel, I take my own pillow if I can, or I fold a towel under the hotel pillow to raise it, or I ask for an extra pillow so I can put one between my knees. These are small habits, but they make the first night in a new place much easier. If you cannot take a pillow, pay attention to the one you are given. Lie on your side, check whether your head is straight, and if it is not, fold the pillow, or use two, or use none and put a folded towel under your head instead. A hotel is not your home, and you should not expect it to be. You should simply make the best setup you can with what is there, and accept that the first night may not be perfect.
I think about what I would tell my own family, and the answer is the same as what I have written here. I would tell my mother to use a pillow between her knees, because her hip aches in the morning. I would tell a younger brother to stop using a flat pillow that lets his head drop, because his neck is stiff every day. I would tell a child to use a small pillow that fits their shoulders, not mine. The advice is not complicated, and it does not need to be. A straight neck, a supported knee, and a bed that is kind to the shoulder and hip: that is the whole of it. I believe that most sleep problems are not solved by buying things. They are solved by noticing what hurts in the morning and changing one small thing at a time until the mornings get better. That is slow work, and it is not exciting, but it is the work that actually helps.
One last thing I want to say is about patience with your own body. A new pillow will feel strange for a few nights. A knee cushion will end up on the floor for the first week. You will wake up on your stomach, or on your back, or with your arm in a strange place, and you will think the change has failed. It has not failed. It has only just begun. The body learns slowly, and it forgets slowly too. Give it a week, keep a simple note of how your mornings feel, and let the note tell you the truth. If the mornings are easier, keep going. If they are not, try something else. That is all I ask, and I think it is a fair way to treat your own sleep: with attention, with patience, and with the belief that small changes, made steadily, are worth more than big promises made in a hurry.
Frequently Asked Questions
What makes “best sleep position for side sleepers” easier to understand in plain words?
It becomes easier when you think of it as three simple checks: your head should sit in a straight line with your spine, your top knee should rest on a small pillow so your hips do not twist, and your shoulder and hip should sink into the mattress just a little without being pressed hard. If those three things are right, the position is usually comfortable. If one of them is wrong, you will feel it in the morning as a stiff neck, a sore shoulder, or a tight lower back.
In simple words, what does “best sleep position for side sleepers” mean?
It means the side sleeping setup that keeps your spine in a fairly straight line all night. That usually means lying on your side with your knees slightly bent, a pillow thick enough to fill the gap between your head and the mattress, and a small pillow between your knees. It is not one exact pose. It is a way of lying that lets your neck, back, hips, and shoulders all rest without being bent or twisted for hours.
Why do people ask “best sleep position for side sleepers” so often?
People ask because side sleeping is the most common position, and many side sleepers wake up with a stiff neck, a sore shoulder, or a tight back without knowing why. They want to know whether their position is the problem or whether something small, like the pillow height or a cushion between the knees, is making the difference. It is also a question people ask when they start snoring, when they have a blocked nose, or when a doctor or a friend suggests that side sleeping might help them breathe more easily.
Does “best sleep position for side sleepers” change with age or daily routine?
Yes, it can change. Children need a thinner pillow because their shoulders are narrow. Older people may need a softer surface under a sore shoulder or hip, and they may need to change sides more often during the night. A person who has done heavy physical work may need more support under the knees, while a person who sits all day may need to stretch a little before bed so the hips are not tight when they lie down. The basic rules stay the same, but the details change with the body.
When is “best sleep position for side sleepers” most noticeable?
It is most noticeable in the morning. A good night on your side means you wake up without thinking about your neck, shoulder, or back. A bad night means you wake up stiff, you need a few minutes to stand up straight, or your shoulder aches for the first hour of the day. It is also noticeable during the night if you keep waking up to change position, or if your arm goes numb, because those are signs that something in the setup, usually the pillow or the arm position, needs changing.
What do people notice first when they ask “best sleep position for side sleepers”?
Most people notice their neck first, because a pillow that is too thin or too thick leaves the neck bent all night, and that shows up as stiffness in the morning. The next thing people notice is usually their shoulder, which can ache from taking body weight on a hard mattress, or their lower back, which can feel tight if the top leg has twisted the hips during the night. Noticing which of these hurts first is useful, because it points to the fix: the pillow for the neck, a softer surface for the shoulder, and a pillow between the knees for the back.
Sources
- NHS — general health information: https://www.nhs.uk/
- World Health Organization — health topics: https://www.who.int/
- Centers for Disease Control and Prevention — health information: https://www.cdc.gov/
- Mayo Clinic — general health information: https://www.mayoclinic.org/
- Healthline — general health information: https://www.healthline.com/
