Exosomes may be able to repair sun-damaged skin. Researchers made 3-D exosomes from human skin cells, which increased skin thickness and collagen more than retinoid cream, 2-D exosomes and stem cells.

A study found that physically active older adults had bacterial differences compared to sedentary adults. Mice were colonized with bacteria from the adults; mice with the physically active bacteria had increased grip strength.

In the VITAL study, those who took omega-3 supplements had a reduction in heart attacks. Vitamin D supplementation was associated with a significant reduction in total cancer mortality.

Drinking green, oolong, or black tea 4 times per week for 25 years had positive effects on brain structure on the MRI scans of older adults, leading to the brain processing information more efficiently.