Which is why I went paleo after 2.5 months minus oxalates. I honestly have concerns about stomach cancer (family tree) and it allowed my to substitute coconut oil for a lot of the animal based fat I needed to consume for those 2.5 months. It is hard to do 20% of your calories in animal fat (male) and 30% (female) to maintain hormone levels. I don't know if those are hard and fast rules but they were the generic guidelines given to my by my PA.