By lowering Sulfur, high copper levels are a common cause or aggravating factor of osteoarthritis, for which glucosamine sulfate or MSM are frequently supplemented. If successful, they partly work by counteracting high copper levels and thus help to reverse or slow cartilage or joint degeneration. Other than the effect of chocolate on an individual's mood, elevated copper levels - by inhibiting sulfur - can adversely affect memory and concentration, so progressive copper storage as a result of long-term high copper intake, combined with increasingly diminishing sulfur levels can eventually contribute to, or lead to mental impairment or dementia.... Full Text