Peanut oil can be very damaging
When I was living in Dehra Dun, North India, one of the new Sahaja Yogis there had a daughter who had leukoderma, also called vitilego, a harmless condition where the skin becomes discolored and gets unsightly white patches. I asked Shri Mataji about it and She said it was caused and/or made much worse by the use of peanut oil in cooking. Sure enough, the lady told me she always used peanut oil for cooking. On another occasion Shri Mataji told us to avoid peanuts as they are very bad for the liver.