@reallyconfused, 2% milk has 18% of the liquid proteins in milk, as is in all varieties of cow milk. There are whey sensitivities that are not methyltrap. I get IBS from milk. The lactase pills make no difference for me. Go without any milk for a couple of weeks, then drink it daily for 2 weeks. Do that a few times and you will know whether you can tolerate it or not. I don't know what causes my sensitivities. Candy with whey in it does make me sick with less than I thought would matter after a few years without. it. Groups 1, 2a and 2b are low potassium and that is usually a flag that healing has started. Group 3 symptoms, l-methylfolate insufficiencies, can be caused by lack of MeCbl in the cell at the instant needed which fails with folate deficiency symptoms. The questions with folinic acid, veggie folates and folic acid concern whether a person is having only group 3 symptoms having only folate deficiency symptoms without any healing signs or having groups 1,2a, 2b, and 3 indicating healing in some compartments and folate deficiency in others.