Metabolism

A two-way relationship between sleep and growth hormone reveals how the brain carefully balances physical recovery with wakefulness. This could help explain why poor sleep harms metabolism and brain health, potentially leading to new treatments for sleep and neurological disorders.

While their nutritional labels might have been the same, the metabolic responses they triggered turned out to be very different — especially the insulin response, which was much higher with ultra-processed foods.

The results show that metabolism is regulated by a tightly interconnected system. In total, the study identified 88,604 associations between genetic variants and metabolites across the data of 619,372 individuals.

There is growing scientific evidence underscoring the importance of maintaining healthy dietary habits, balanced nutritional intake, appropriate body composition parameters, and body homeostasis.

At baseline, older adults exhibited reduced expression of genes associated with cellular respiration and energy metabolism compared to young adults with comparable activity levels.

After hitting a plateau around the age of 20, the data suggest that our metabolisms don’t really start to decline until after age 60. The slowdown is gradual, only 0.7% a year. But a person in their 90s needs 26% fewer calories each day than someone in midlife.