What is the active ingredient in apple juice and is it available as a supplement?
It is difficult to drink enough apple juice daily, in addition to the green tea, milk, water and everything else that people are advised to consume! While there have been several studies that have examined the benefits of apple juice concentrate on aging and memory (including the one you mentioned wherein mice given apple juice daily for a month had lower levels of amyloid beta, the protein deposited in the neuritic plaques associated with Alzheimer’s disease), none have yet determined the active ingredient(s) within apple juice that is/are responsible for these effects. In general, adults are advised to consume about eight 8-oz glasses of liquid per day, in any combination of water or other non-alcoholic (preferably non-caffeinated) beverages. The overall amount your body needs varies depending on your activity level, health status, and climate, so some days you may need more fluid than others. But within these guidelines, it should be possible to add at least one glass of apple juice
