"People with atopic disease have too many TH2 defenders and a lack of TH1 defenders, as do people who tend to get AIDS, CFIDS, Candidiasis, Multiple allergies, Multiple Chemical Sensitivities (MCS), viral hepatitis, Gulf War Syndrome (GWS), cancer and lupus. People who are prone to get auto-immune diseases such as Type 1 diabetes mellitus (insulin-dependent), multiple sclerosis and, perhaps, rheumatoid arthritis have an immune system that is TH1 predominant. Usually, TH1 responses are activated by foreign substances that get into and inhabit cells, including all viruses, some bacteria (for example the mycobacteria that cause tuberculosis), certain yeasts and a number of parasitic single-celled organisms. In contrast, the cytokines or molecules, produced by TH2 cells, stimulate strong antibody responses that are most effective in combating bacteria, certain yeasts and parasites, including worms.