Mental Muscle:

As with all your organs in the body,your brain is subject to age-related fatigue. Levels of nutrients and vital oxygen slowly decline. Conditions such as Diabetes and hypertension can accelerate aging and increase the risk of memory problems.

Flex Your Grey Matter:

Just as Physical exercise inreases muscle mass.Working out your brain can stimulate and keeps your brain active. Strengthening existing neuron pathways and building new ones.

Feed The Brain:

Flax seed oil and cold water fish like salmon, sardines and herring are all rich in Omega-3 fatty acids. Essential for proper mental function.

Brain Boosters:

Ginko Biloba has been proven to improve circulation to the brain, improving memory.

Natural-Inflammatories:

Inflammation to the brain has been linked to age-related memory loss. Fish oil, curcumin and ginger are natural anti-inflammatories and have been known to help.

Whats In Your Medicine Chest:

Prescription Medicines can also alter brain function.They may include:

barbituates
tranquilizers
anti-depressants
ulcer drugs
digitalis
painkillers
certain eye drops
antihistamines

See your doctor if you are concerned that your meds is affecting your memory.

Clean Living:

And of course getting your 8 hours of sleep and drinking sufficient amounts of water(typically 8 glasses of water should do you).And also a multi-vitamin wouldnt hurt.

Get Active:

Exercise is important in preventing memory loss and general overall decline in the human body.It can also reduces the affects of stress and improve immune system function.

Drop The Extra Weight:

As far as memory loss, goes being overweight bogs everything down as your body isn't running at peak performance - not to mention the health issues.