"Apple a day keeps doctor away." What exactly in that apple, and how big/green/sour apple has it be? Is it vit C, some other acid, pectin -- or their co-effects? Body's reaction to apple's ascorbic acid is ca 50 times bigger than the reaction on the same amount from a pill -- meaning it is amplified by other components. Is the apple a drug?

In short: eat human food (not Big Food petrochemicals) and support time to time with herbs; avoid cosmetic petrochemicals, and you'll never need the Big Pharma petrochemicals.