Sulfur (S) – Elevated

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What it means?

Sulfur (S) is an essential nutrient that is naturally built into proteins, especially in the amino acids cystine, methionine, and taurine. Because hair is made largely of keratin (a sulfur-rich protein), hair analysis normally reflects sulfur content. However, sulfur levels in hair are very sensitive to external contamination. Most elevated results are caused by shampoos, conditioners, or other hair products that contain sulfur compounds.

 

Health connections:

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• In most cases, high hair sulfur is not a sign of health problems but rather of external contamination.

• Very rarely, persistently high sulfur may reflect underlying metabolic or health issues, such as:

  • Sulfate/sulfite metabolism disorders

  • Cystinosis (a rare genetic disorder)

  • Biliary dysfunction or impaired liver processing

  • Kidney (renal) disease

• Excessive intake of sulfur-rich amino acids (from very high protein diets or heavy supplementation) could also contribute.

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Common sources / Notes

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• External: The most frequent cause of elevated sulfur in hair is contamination from shampoos, conditioners, or other cosmetic products.

• Internal: Diets unusually high in protein or sulfur-containing supplements may increase body sulfur.

• Testing note: Only when sulfur is extremely high (greater than 60,000 ppm) and consistent across multiple samples would deeper medical evaluation be recommended.

 

Sulfur (S) – Low / Deficient

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What it means?

Sulfur (S) is a nutritionally essential mineral that is incorporated into amino acids (cystine, methionine, taurine) and is a building block of proteins, enzymes, and connective tissue. It also supports detoxification in the liver through sulfur-containing compounds such as glutathione. Because hair is naturally rich in sulfur-containing proteins, low sulfur in hair may reflect reduced protein or amino acid availability or altered metabolism of sulfur compounds.

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Health connections

Low sulfur may be associated with:

• Inadequate protein intake or poor-quality diet

• Malabsorption or digestive problems that reduce amino acid uptake

• Impaired liver detoxification (low glutathione production)

• Connective tissue weakness (joints, cartilage, skin, hair, nails)

• Fatigue or reduced ability to handle toxins and oxidative stress

 

Common causes / sources

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• Internal: Chronic illness, poor digestion, low protein diet, or impaired sulfur amino acid metabolism.

• External: Rarely influenced by hair care products, since contamination usually raises (not lowers) sulfur.

• Food sources: Protein-rich foods, especially eggs, meat, fish, legumes, garlic, onions, and cruciferous vegetables (broccoli, Brussels sprouts, cabbage).

 

Possible symptoms of deficiency

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• Weak or brittle hair and nails

• Joint discomfort or reduced flexibility

• Fatigue or poor stress tolerance

• Increased sensitivity to chemicals or toxins

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 “True sulfur deficiency is uncommon when eating a balanced diet; supplementation should only be taken under the guidance of Lemus Natural Medicine.”