Older adults who did high-intensity interval training (HIIT) had improved physical and mental quality of life, the greatest positive effect on fitness, and a trend towards reducing all-cause mortality risk.

Researchers discovered that both neuronal networks - the excitatory and inhibitory networks - can be manipulated to control long-term memory and potentially treat Alzheimer's disease.

A protein in the brain, p11, regulates the feel-good hormone serotonin and the stress hormone cortisol in mice. Low levels of p11 are linked to depression, anxiety, and stronger reactions to stress.

Better blood sugar control improves cognition and the ability to think, learn, and remember in people with type 2 diabetes, more so than weight loss or increased physical activity.