It has not yet been medically proven that an excess of MSM has negative long-term effects on our body. Furthermore, no excess of sulphur in the diet has been found. However, a deficiency of this element can cause hair and nail growth disorders and can also contribute to the development of arthrosis.
If there is an excess of sulphur in the body, it is excreted via the kidneys and intestines. (5, 7)