Exercise is very important along with stable low blood sugar levels. Avoid spikes.
Omega 3 fatty acids and Medium Chain Triglycerides as in coconut oil are essential.
Avoiding statins is another good strategy.
Get your iron levels checked. Recent data show excess iron is a real problem, much debate amongst Doctors of what is a healthy level and again recent research is saying much lower than generally accepted.
Hemochromotosis is one of the most common genetic defects affecting about 8% of Caucasian men, so get checked, it also attacks heart tissue.
10 years ago men were never tested , but it is getting much more common now. Many men died from this undisguised problem.
There is evidence that reducing iron levels in lab rats, reversed damage done to the brain.