Evidence supporting the use of: Spinach
For the health condition: Hair (loss or thinning)

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Synopsis

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

Spinach is often recommended in the context of hair loss or thinning because it is a rich dietary source of several nutrients important for hair health, including iron, folate, vitamin A, vitamin C, and other antioxidants. Scientific evidence links certain nutritional deficiencies—most notably iron deficiency—with hair loss, particularly a form known as telogen effluvium. Iron supports red blood cell production and oxygen delivery to hair follicles, which is essential for hair growth. Spinach, as a plant-based source of non-heme iron, can help address iron deficiency when included as part of a balanced diet, especially when consumed with vitamin C-rich foods to enhance absorption. However, while there is indirect scientific support for the role of iron and other micronutrients in maintaining healthy hair, there are no clinical trials directly demonstrating that eating spinach specifically prevents or treats hair loss. Most evidence is extrapolated from studies on iron deficiency anemia and its correction, which sometimes leads to hair regrowth. Furthermore, not all cases of hair loss are due to nutritional deficiencies, so spinach would only be potentially helpful for individuals with proven deficiencies. In summary, while spinach can support overall nutrition and may help address hair loss related to certain deficiencies, there is only moderate scientific evidence for its use, and it should not be viewed as a stand-alone treatment for hair loss.

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