Evidence supporting the use of: Marine oil (unspecified)
For the body system: Hair

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Marine oil, typically referring to fish oil or oils derived from marine sources, is used to support the hair body system primarily due to its rich content of omega-3 fatty acids such as EPA and DHA. Scientifically, several studies have investigated the impact of omega-3 supplementation on hair health. Omega-3s are thought to nourish hair follicles, support scalp health, and potentially reduce hair thinning by modulating inflammation and improving circulation. Some randomized controlled trials have found that marine oil supplementation can improve hair density and reduce hair loss in individuals experiencing thinning or telogen effluvium, likely due to the anti-inflammatory and lipid-balancing properties of these fatty acids. However, while these findings are promising, the overall body of evidence is moderate, with some studies reporting only marginal benefits and others limited by small sample sizes or lack of blinding. There is also traditional support for the use of fish and marine oils for hair and skin health, particularly in cultures with high dietary fish intake. In summary, while the scientific evidence is not overwhelmingly strong, there is reasonable justification for the use of marine oil to support hair health, particularly for individuals with dietary insufficiency of omega-3s.

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