Sulfur is a mineral needed for the manufacture of many proteins, including those forming
hair, muscles, and skin. Sulfur contributes to fat digestion and absorption, because it is
needed to make bile acids. Sulfur is also a constituent of bones, teeth, and collagen (the
protein in connective tissue). As a component of
insulin, sulfur is needed to regulate blood sugar. Sulfur is present in methylsulfonylmethane (MSM), a naturally-occurring
substance available as a supplement.
Where is it found?
Most dietary sulfur is consumed as part of certain amino acids in protein-rich foods. Meat and poultry,
organ meats, fish, eggs, beans, and dairy products are all good sources of sulfur-containing
amino acids. Sulfur also occurs in garlic and
onions and may be partially responsible for the health benefits associated with these
items.1
Deficiencies of sulfur have not been documented, although a protein-deficient diet could
theoretically lead to a deficiency of sulfur. Low levels of cystine, and therefore possibly
sulfur, were reported many years ago in people with arthritis, but this association is far
from proven.2
How much is usually taken?
No recommended intake levels have been established for sulfur. Since most Western diets are
high in protein, the majority of diets probably supply enough sulfur.
Are there any side effects or interactions?
No side effects have been reported with the use of sulfur.
At the time of writing, there were no well-known drug interactions
with sulfur.
References (To view, roll mouse over the "References" heading; to hide, click on the heading)
1. Augusti KT. Therapeutic values of onion (Allium cepa L.) and garlic
(Allium sativum L.). Indian J Exp Biol 1996;34:634–40.
2. Sullivan MX, Hess WC. The cystine content of the finger nails in
arthritis. J Bone Joint Surg 1935;16:185–8.
The information presented in Aisle7 is for informational purposes only.
It is based on scientific studies (human, animal, or in vitro), clinical experience,
or traditional usage as cited in each article. The results reported may not necessarily occur
in all individuals. For many of the conditions discussed, treatment with prescription or over
the counter medication is also available. Consult your doctor, practitioner, and/or chemist
for any health problem and before using any supplements or before making any changes in
prescribed medications. Information expires February 2010.
