Health
Discover facts about health. Small discoveries that change the way you see familiar things.
Health
Heavy shoulder bags create severe asymmetric muscle strain
A heavy bag on one shoulder pulls your body off balance, so your torso and shoulder muscles work unevenly to keep you upright. The load is not just hanging…
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Even identical twins smell different
Same genes do not mean identical scent. Different routines and diets feed different skin bacteria, and those microbes help give identical twins their own…
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Why trampolines cause so many broken bones
A trampoline’s surface can spring back unpredictably and throw a jumper off balance, making a bad landing more likely. With several people jumping, their…
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Why boiling vegetables can drain their nutrients
As vegetables boil, some nutrients that dissolve in water leave the food and move into the cooking liquid. The nutrients haven’t necessarily vanished—they may…
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Pickle cravings don’t necessarily mean low sodium
Pickles deliver a very particular combination of salty, sour, tangy flavor and crunch. Wanting that combination doesn’t tell you your sodium is low; a craving…
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Why false contractions still matter
Practice contractions happen when the uterine muscle tightens, but a tightening alone doesn’t mean the cervix is opening. Unlike labor, these contractions…
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Why liquid calories leave you hungry
Drinks can deliver calories without giving your stomach the same fullness cues as solid food. You swallow them quickly, with little chewing and often less…
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Chronic calorie restriction lowers basal metabolic rate
After severe calorie restriction lasts a while, the body can reduce the energy it spends at rest. That means the same everyday functions may use fewer…
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Your favorite chewing side can hide a dental problem
Chewing mainly on one side can reflect habit, but it can also mean a tooth hurts or the bite feels more comfortable there. Studies have examined links with…
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Why eating in front of a screen makes you eat more
When you watch a screen while eating, your attention has less room for the meal’s sights, tastes, and fullness signals. The fork can keep moving after your…
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Refined carbohydrates spike glucose almost instantly
With little fiber to slow digestion, the carbohydrates in white bread can be broken down and absorbed quickly. Blood glucose can rise soon after eating—not…
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Concert screaming can leave tiny calluses in your throat
A scream forces the vocal folds in your voice box to vibrate hard and repeatedly. That strain can leave them swollen, making your voice rough or weak;…
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Reaching forward constantly forces unnatural pronation
If the keyboard is too far away, you reach toward it and often turn your forearms inward to place your hands on the keys. Holding that rotated, outstretched…
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Your pelvis doesn't immediately recover after childbirth
Pregnancy and birth stretch the pelvic floor—the muscles and connective tissue supporting the pelvic organs—and those tissues need time to recover. That is…
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Why fructose takes a different route through your body
Glucose metabolism has regulatory steps that help control how quickly the sugar is processed. Fructose slips past some of those checkpoints and is handled…
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Why sitting cross-legged can throw off your alignment
Your neck can feel the effects of a position that starts at your hips. Crossing one leg may tilt your pelvis, and muscles farther up your back can tighten as…
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Carrying multiples heavily taxes maternal calcium stores
Calcium passes from the mother to the developing babies as their skeletons form. With twins, that demand can be substantial, and when dietary calcium is…
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What high heat does to seed oils
At an oil’s smoke point, it begins to smoke and break down; heat can produce reactive compounds as the oil’s molecules change. The visible smoke is a warning…
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Making breast milk raises the body's energy needs
CDC guidance generally recommends an extra 330–400 calories a day for well-nourished breastfeeding mothers, with needs varying by circumstances. Milk…
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Oral piercings can crack your back teeth
When you bite down on an oral piercing, the bead becomes a tiny, hard object caught between your teeth. A strong bite can chip or crack a tooth, and severe…
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Why clearing your throat can make the tickle worse
Each throat-clear rubs the tissue around your voice box, and repeated rubbing can leave it mildly swollen. That swelling feels like a blockage, so you clear…
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Wisdom teeth can get trapped before they fully emerge
A tooth without enough room may remain beneath the gum or come through only partly, leaving a hard-to-clean pocket. That can lead to decay or repeated…
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What childbirth contractions actually do to your body
The uterus is a thick muscle, and during labor it tightens in coordinated waves. Those waves help open the cervix and move the baby downward; the muscle…
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Working from a couch destroys lumbar support completely
A soft couch can let your hips sink and your lower back round into a C-shape instead of keeping its usual curve. Staying there for a long stretch can leave…
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