What do you mean when you write you can't digest sulfur foods? Do you notice a 'bad' smell on your body after eating garlic or asparagus? If that is happening then your secondary system of removing toxins from your body is working to get the toxins out of you because your detox system in the liver is not able to handle the load. Sulfur amino acids are part of the detox reaction and the bad smelling conjugated toxins are excreted in your sweat glands.