Studies show that an essential ingredient in fish oil does not appear to slow mental decline . Fish oil seems to be healthy in general , but does not benefit Alzheimer 's patients cognitively . Treatments such as DHA can prevent or slow aging if used earlier in life .
Studies show that an essential nutrient in fish oil does not appear to slow mental decline . Fish oil seems to be healthy in general , but does not benefit Alzheimer 's patients cognitively . Treatments such as DHA could prevent or slow dementia if started earlier in life .