In a study of 17,000 adults, low cerebral blood flow (perfusion) is more commonly found in individuals with a higher BMI, which is a risk factor for developing Alzheimer's disease.

A microRNA promotes hair regrowth by regulating follicle regeneration and targeting the replenishment of dermal papillae cells. Mice treated with this microRNA regained 90% of hair growth.

The molecule Neuregulin-1 enhances the repair and regeneration of the intestinal lining by prompting stem cells to regenerate damaged gut tissue, which may reduce the risk of inflammatory bowel diseases.

Memory storage is dynamic; restorative sleep enables continual learning by consolidating new memories with re-consolidating old memories to minimize interference between the two.