Evidence supporting the use of: METHIONINE
For the body system: Nails

Links: Go back one page, Tool main page, Ingredients list, Health conditions list, Body systems list

Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Methionine is an essential amino acid involved in multiple metabolic processes, including the synthesis of proteins and other amino acids. Its connection to nail health is based on its role as a sulfur-containing amino acid, which contributes to the structure of keratin—a primary protein in nails. Some studies and reviews suggest that deficiencies in methionine and other sulfur amino acids may negatively impact nail growth and strength, as sulfur bonds are important for keratin's rigidity and resilience. However, direct high-quality clinical trials supporting supplemental methionine specifically for improving nail health in the general population are limited. Most evidence is extrapolated from its biological function and basic nutritional requirements. Methionine is sometimes included in dietary supplements marketed for "hair, skin, and nails" health, but its use is generally as part of a broader amino acid or protein complex rather than as a sole active ingredient. Current scientific consensus holds that while methionine is necessary for normal nail structure, additional supplementation beyond normal dietary intake has minimal or unproven benefit for most individuals unless a deficiency exists. Therefore, the evidence supporting the targeted use of methionine for enhancing nail health is limited (rated 2/5), with the rationale grounded more in biochemical plausibility than robust clinical outcomes.

More about METHIONINE
More about Nails

Other body systems supported by METHIONINE

Hair
Hepatic System
Liver
Nails

Products containing METHIONINE

We currently have no products on Vitabase that contain this ingredient.