Use of vitamin E, alone or with vitamin C, has been associated with better cognitive function and a reduced risk of certain forms of dementia (but not Alzheimer's disease).
Use of vitamin C, alone or with vitamin E, has been associated with better cognitive function and a reduced risk of certain forms of dementia (not including Alzheimer's disease).
In a preliminary trial of individuals with mild cognitive impairment and low blood levels of selenium, the improvement in measures of cognitive function was significantly greater in the group eating Brazil nuts than in the control group.
Cognitive function is linked to adequate sleep and normal sleep-wake cycles, which are partially regulated by the hormone melatonin. The long-term effects of melatonin are unknown, use under a doctor's supervision.
50 mg every other day. Studies show, long-term beta-carotene supplementation slowed the loss of cognitive function in middle-aged healthy males.
Some, though not all, research has found astaxanthin might protect the brain from age-related oxidative damage.
20 mg daily. There is evidence that supplementing with vitamin B6 (pyridoxine) may improve memory performance, especially in people who are deficient.
30 to 60 mg daily. Vinpocetine has been shown to improve dementia symptoms in patients with various brain diseases.
150 mg per day. A study of healthy senior people reported that supplementing daily with Pycnogenol improved some measures of memory after three months, compared with a group taking a placebo.
100 to 150 mcg two to three times per day. Huperzine A, an extract from a Chinese medicinal herb, has been found to improve cognitive function in seniors with memory disorders.
Animal studies have found this Ayurvedic herb enhances several aspects of mental function and learning ability, and there is some preliminary research that it improves mental function in humans.
300 mg daily of bovine-derived supplement. Bovine-derived PS (phosphatidylserine) has been shown to improve memory, cognition, and mood in the elderly. To date, most evidence suggests that soy-derived PS is not effective for ARCD.
120 to 160 mg daily. Most, but not all, clinical trials have found this herb to be a safe and effective treatment for ARCD.
1,500 mg daily. Several clinical trials suggest that this supplement delays onset of ARCD and improves overall cognitive function in the elderly