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The macronutrient proportions promoted by the Paleo Diet fall within the range seen in some tropical hunter-gatherer populations, but differences between groups mean these proportions cannot be...
In tropical foraging communities, people tend to eat more animal-based foods in cooler climates compared to warmer ones, indicating that temperature may shape their diet patterns.
When researchers track what people eat over longer periods and include food eaten outside of controlled environments, they find higher amounts of animal-based foods than when they only track...
People in tropical hunter-gatherer groups eat different amounts of protein, carbs, and fat, with ranges that overlap significantly, which means there isn't one single diet pattern that defines how...
When children aged 8 to 12 eat a breakfast high in protein instead of one high in carbohydrates, their bodies burn more carbohydrates for energy four hours after eating.
Children who are overweight or obese burn more fat and use more energy after eating a high-protein breakfast than children of normal weight do, suggesting their bodies respond differently to the same...
In children aged 8 to 12, eating a protein-rich breakfast makes them feel less hungry and more full than a carb-rich breakfast, but they still eat the same amount of food at lunch. This shows that...
For children aged 8 to 12, eating a breakfast high in protein instead of one high in carbohydrates leads to a measurable reduction in hunger and an increase in fullness within a few hours, regardless...
When children aged 8 to 12 eat a breakfast with 18 grams of protein instead of one with 3 grams of protein, their bodies burn more fat and use more energy in the hours after eating, regardless of...
In men taking 2000 IU of vitamin D daily for 12 weeks, blood levels of vitamin D rise more when their diet is high in fat than when it is high in carbohydrates.
In this study, men assigned to the high-fat diet group started out heavier and had higher body mass index than those in the high-carb group, even though they were randomly assigned, which could have...
Taking 2000 IU of vitamin D daily for 12 weeks raises vitamin D levels in the blood of young, healthy men who were initially deficient, but this change is not linked to changes in testosterone,...
Among young, healthy men doing strength training for 12 weeks, eating a diet high in carbohydrates was linked to a small but statistically significant decrease in morning cortisol levels, while a...
In young, healthy men who regularly lift weights, eating a diet high in carbohydrates or high in fat—while maintaining sufficient protein and calories—does not change the levels of testosterone or...
In physically trained men, a calorie deficit prevents any increase in resting metabolic rate, even when a lot of exercise is performed.
In people who train regularly, a higher resting metabolic rate is not due to long-term changes from exercise, but rather to temporary increases in energy use during and after intense activity. When...
Men who are physically trained have a higher resting metabolic rate than untrained men, but only when their bodies are processing a large amount of energy at that moment. This difference is not a...
In trained men, resting metabolic rate increases only when both physical activity and food intake are high and balanced, not when calorie intake is higher or lower than expenditure alone.
In physically trained men, performing intense exercise for 90 minutes a day over three days while maintaining normal calorie intake is linked to a higher resting metabolic rate compared to days...
In adolescents with obesity, consuming significantly more calories than needed is associated with a measurable increase in preference for sweet foods, suggesting that higher energy intake may alter...
Among adolescents with obesity, consuming 500 extra calories per day above energy needs leads to a 20–30% increase in carbohydrate intake during dinner compared to when energy intake matches energy...
In adolescents with obesity, consuming 500 more calories per day than needed leads to a 25–30% reduction in overall feelings of hunger and desire to eat throughout the day, compared to consuming...
In adolescents with obesity, increasing daily physical activity and food intake by 500 calories total leads to a 35% reduction in the amount of food eaten at dinner compared to when energy intake and...
In adolescents with obesity, combining regular physical activity with a controlled increase in daily calorie intake leads to reduced food consumption at dinner and lower reported feelings of hunger...