Melatonin supplementation may reduce the development of
Alzheimer's disease in patients diagnosed with mild cognitive impairment.
These studies showed that patients with mild cognitive impairment
who were administered melatonin had significantly less progression towards
Alzheimer's disease than another group of similar patients who were
not taking melatonin supplements.
The dosage in these studies range was 3-9 mg, taken one hour before bedtime. Two other studies showed improved cognitive performance in using melatonin dosages between 1 - 6 mg.
The logical conclusion that can be drawn from these studies would be to take a proactive approach and to take melatonin as a supplement long before the preliminary signs of Alzheimer's Disease starts!
You should consult your doctor and pharmacist to make sure that there are no drug interactions with something you are already taking prior to taking any new supplement.
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