I don't know about the mold but I've been taking slippery elm three times a day before meals and I can tell you it does WONDERS for the digestion. I think it would definitely help psoriasis, leaky gut, and candida. It's pretty cheap and worth trying. I found it sold in bulk in my health food store and just bought a little scoop to try it. I mix a teaspoonful in half a cup of hot water and gulp it down.