The benefits of fish oil depend on your genotype — certain people will see reductions in triglycerides (blood fat), while others increase triglycerides, based on variants of the gene GJB2.

Researchers have uncovered a new function of the gene BMI1, which prevents neurons' DNA from disorganizing into structures called G4, seen in Alzheimer's diseased brains.

Gene regulation therapy using "zinc finger proteins" was used to treat Alzheimers disease in mice by binding to the DNA that codes for the harmful protein Tau that accumulates in Alzheimer's brains.

The blood-brain barrier (the border protecting the brain from toxins) leaks as we age, and we lose cells called pericytes. Pericyte health can be preserved by regular exercise and caloric restriction.