Health Claims

If someone has hormone problems from being too lean, eating only animal foods might help fix their hormones — and it could be the fat in their diet, not just calories or body fat, that makes the...

Eating only animal foods with lots of fat might keep a man's testosterone levels high, even if he's eating less or is already lean.

Eating only meat and eggs for a long time doesn't automatically mess up your blood tests for things like metabolism, hormones, liver, or kidney health.

In healthy young guys, better-quality daylight-like LED lights don’t seem to change daily melatonin levels or brain performance like focus and memory — so upgrading light quality might not always...

If young, healthy guys are exposed to daylight-like LED lights during the day, they might sleep more deeply at night — even if their alertness and sleep hormone levels don’t change much.

Using a special kind of bright white LED light that looks more like natural daylight might make young guys feel more awake, comfortable, and in a better mood during the day—even if it’s just as...

Wearing blue light blocking glasses might actually make some people sleep a little less, even though they’re supposed to help. Both how people felt and sleep tracker data showed slightly shorter...

Wearing blue light blocking glasses after 6 PM for a week doesn’t actually help healthy adults sleep longer or more soundly, according to wrist-worn sleep trackers.

Wearing blue light blocking glasses every evening for a week might help healthy adults fall asleep a little faster and wake up less during the night.

Too much blue light messing with your sleep clock might also be bad for your mood, brain, and metabolism — not just your sleep.

Wearing blue light-blocking glasses, using screen filters, adjusting room lighting, and managing screen time may help reduce the negative effects of blue light on your sleep and body clock — but we...

Being around too much blue light at night, like from phones or lamps, can mess with your sleep and your body's internal clock, making it harder to fall asleep and feel rested.

Feeding female Chinese sturgeon a diet with 18% fat might help their ovaries develop better by boosting key body processes that make yolk and support egg growth.

Female Chinese sturgeon fed a high-fat diet with 18% lipids end up with more fat in their blood over time compared to those on lower-fat diets, which means their bodies are holding onto more fat when...

Female Chinese sturgeon on a high-fat diet have bigger egg cells with more fat stored inside them, which might help their eggs grow better early on.

Feeding female Chinese sturgeon a diet with 18% fat helps their ovaries mature fully over two years, but lower-fat diets don’t do the same — so more fat in their food might help these endangered fish...

Cool white LED lights might mess with your sleep more than old-style light bulbs because they affect your body's internal clock more, even if they look just as bright. Old incandescent bulbs are...

Incandescent light bulbs are the least likely to mess with your sleep at night because they give off less of the blueish light that tricks your brain into staying awake.

Wearing brown-tinted blue-light-blocking glasses like Swanwick or THL Sleep at night might help protect your sleep hormone way better than other blue-light glasses by blocking more of the light that...

Changing your LED light from cool white to warm white in the evening can cut down how much it messes with your sleep hormones by over 99%.

Cool white light bulbs, like some LEDs and CFLs, might mess with your sleep more than warm yellowish ones because they can reduce a sleep hormone called melatonin more strongly.

In normal mice, the hormone TSH goes up and down during the day depending on light conditions — peaking at certain times in the dark and showing two peaks when there's a regular light-dark cycle —...

In mice, a clock-related protein in certain hormone cells turns on at night, and this timing shifts when a specific receptor is missing — meaning the body might fine-tune its internal clock after...

Mice that are missing a certain brain signaling system have their daily body clock in the thyroid gland running about 5 hours earlier than normal mice — this suggests that the signaling system helps...