Mild cognitive impairment in elderly and supplementation with omega 3 fatty acids, melatonin and tryptophan: a review.

Age-related changes in nutritional status can play an important role in brain functioning. Specific nutrient deficiencies in the elderly, including omega-3 fatty acids, tryptophan, B-vitamins, and antioxidants among others, may exacerbate pathological processes in the brain. Consequently, the potential of nutritional intervention to prevent or delay cognitive impairment and the development of dementia is an important topic. The review takes into account the recent literature on the effects of specific nutrients on cognitive function and emotions.