That is sure true about figuring it out at a younger age.

Had I learned at 30 about diet what I didn't know till about 65, I am certain my current health would be much better than it is.

Well maybe. Even if I knew it back then, I don't know if my attitude or intelligence would have prevailed. I did the Atkins diet for about three months. Well kind of. It worked but life got in the way and having small kids in the house just is not conductive to getting off sweets. Of course Atkins was made out to be a bad guy by all conventional sources. Little did I know that he was just way ahead of his time. He had it mostly figured out. He just did not have all the science (but did have some) to back it up.