Vitamin D And Exercise : The Ultimate Team to Protect Aging Brains.

In 2025, Jingfeng Chen and a team from Chinese universities reviewed animal and human studies on how vitamin D and exercise together help keep brains healthy as people age. They looked at things like brain growth proteins, blood flow, and swelling in the brain, focusing on older adults with memory problems.

The combo boosted brain growth factor BDNF by up to 25% in animals, reduced swelling by about 30%, and improved thinking skills like memory by 10-15% in human trials. In one study called SYNERGIC, older folks doing exercise with vitamin D improved thinking scores by 2.64 points more than controls, but vitamin D alone didn't help much.

Get outside in the sun to soak in vitamin D and do exercises like walking or weights daily to help your brain stay sharp as you get older.