Get some 20-30 minutes of sun each day at minimum with as much skin
exposed as is safe. Do not use sun blocks. Start with short periods of
time and slowly increase to avoid burning
Get some mild exercise. Start with 10 minutes of walking and build additional
minutes each day until you can walk for one hour
After 15 days or less you will find improvement in your memory. Continue
for 60 days (or the rest of your life)