Browse evidence-based analysis of health-related claims and assertions
The natural daily rise and fall of the stress hormone in the mice’s poop becomes flatter and stays higher all day when they eat a fatty diet.
Descriptive
Mice eating a fatty diet have more of the stress hormone in their fur, suggesting their bodies are under more prolonged stress over time.
Mice that eat a high-fat diet start snacking more during the day—when they normally sleep—and eat less at night—when they normally are active.
When female mice eat a diet full of fat for a month, they get much heavier than mice eating a normal diet, and this starts happening after just two weeks.
After eating carbs, scientists measured changes in blood flow and nerve signals in the lower leg using special tools, and saw all the changes happen within two hours.
Eating carbs makes your body naturally release insulin for a short time—this is different from when doctors give insulin through an IV for a long time.
When insulin goes up after eating carbs, it lines up with bigger blood flow to muscles, looser blood vessels, and more nerve signals telling vessels to tighten—suggesting insulin might be linked to all these changes happening together.
Correlational
After eating carbs, the body turns up the 'stress signal' to blood vessels, but the vessels still open up instead of tightening—meaning the body’s normal 'squeeze' signal isn’t strong enough to block the opening.
When healthy people eat a carb-rich meal, their muscles get more blood flow and their blood vessels relax, even though their body also sends signals to tighten blood vessels—this might help their body absorb sugar from the meal better.
Eating a meal with less protein makes you eat more calories — but not because you’re hungrier. Something else about the meal is making you eat more.
Eating a meal you choose yourself makes you eat more that day and a little less the next day — but then you go back to normal.
What you eat in one meal matters more for how many calories you eat that day than how hungry or full you feel.
When people on a high-protein diet eat a meal they choose themselves, their total calories go up — but they don’t feel any different in hunger or fullness.
Eating less protein makes people eat more calories — but not because they feel hungrier. Something else is going on.
How full or hungry people feel doesn’t explain why they eat more or less after choosing their own meal.
People on a high-protein diet usually pick one meal a week to eat whatever they want — and when they do, they eat more that day but don’t feel any hungrier or fuller than usual.
People can eat a lot more without feeling hungrier — meaning something other than hunger might be making them eat more.
Even when people eat more or less than usual because they chose a different meal, they don’t feel hungrier or fuller than normal.
When people eat a meal with less protein than usual, they tend to eat more total calories that day — and this pattern holds up even when accounting for other factors.
The day after eating a meal with less protein than usual, people tend to eat about 60 fewer calories than normal.
When people eating a high-protein diet skip their planned meal and choose something with less protein, they tend to eat about 260 more calories that day.
The daily changes in body temperature and hormones in pregnant cows aren’t controlled by just one clock — they’re shaped by at least two different timing systems working together.
As cows get closer to giving birth, their bodies start showing stronger daily patterns in stress hormones, pregnancy hormones, and mood-related chemicals — but only if they’re on a steady light schedule.
When cows are exposed to shifting light schedules before birth, their daily body temperature and hormone patterns change — and those changes are connected to them carrying their calves longer than usual.