A meta-analysis found that physical activity protects against the consequences of aging. Although exercise at any age was beneficial, the protective effects on aging reduced by 3% per year.

High blood levels of chemicals found in non-stick cookware (including Teflon), pesticides, and fire retardants are linked to an increased risk of developing celiac disease.

Long term use of proton pump inhibitors (drugs used for heartburn) is linked to an increased risk of developing dementia, due to inhibition of the neurotransmitter acetylcholine. 

Consuming flavonoid-rich foods (berries, apples, and tea) was linked to a reduced risk of developing Alzheimer's disease over a 20-year study, with the lowest intake having 2-4 times greater risk.