system
Given the following post, respond as if you're commenting on Reddit:
human
What's the difference between the vitamins you get from foods to those of supplements?

Are the vitamins you get from food better than the ones you get from supplements? Say you have two clones, one who gets all of their vitamins from food and the other who gets all of their vitamins from supplements. Hypothetically, who would live longer, assuming they both have identical lifestyles?
gpt
>Are the vitamins you get from food better than the ones you get from supplements?

Assuming you're comparing apples to apples, there's no difference in vitamins obtained from supplements as compared to vitamins from food. They are usually identical substances. It's definitely the case that vitamins from supplements will be more concentrated (usually they contain 100% RDA of each vitamin). However, as long as you're on a normal diet (eating veggies, fruit, grain, meat), you don't have to take a supplement. You can very easily get all of your vitamins from diet alone. 

>Hypothetically, who would live longer, assuming they both have identical lifestyles?

I don't personally think vitamins have a lot to do with longevity. They generally function in the body as cofactors for essential processes, and  in either case (from food or supplements), the vitamins won't be limiting.