I usually do not do this but this time I will make an exception. Instead of wrtting a blog, I am going put a link to a video that talks about nutrition and diet from a scientific point of view. It is only 15 minutes long and it is explained in a simple manner. In my opinion one of the best videos I have seen. Hopefully you guys like it and learn something from it.
https://www.youtube.com/watch?v=fqhYBTg73fw . If the link gets blocked, all you have to do is go to youtube and look for Doctor Mike Evans.