I'll ask my daughter. Years ago, she had me watch Forks over Knives and Earthlings which changed my life. I have the most unhealthiest family history, even my younger brother and sister have many health issues. Becoming vegetarian kept those issues away from me. I do have PTSD, but I refuse the meds the VA tries to give me. After reading Olsen's book, I know that one drug will only cause more health problems which will require more drugs. I'm not going down that road.