Beef liver is a nutrient-dense food that has been scientifically recognized for its potential benefits in supporting hair health. It is an exceptionally rich source of essential nutrients such as vitamin A (in the form of retinol), B vitamins (particularly biotin, B12, and folate), iron, zinc, copper, and high-quality protein. These nutrients are all implicated in the maintenance of healthy hair. For example, biotin deficiency is well-known to cause hair thinning and loss, and supplementation can help restore hair growth in deficient individuals. Iron deficiency, particularly in women, has also been linked to hair loss, and beef liver is a potent source of highly bioavailable heme iron. Vitamin A is necessary for cell growth, including hair follicle cells, but excess intake can be harmful to hair, so moderation is important.

Several clinical studies and reviews have connected deficiencies in these micronutrients to hair loss disorders such as telogen effluvium and androgenetic alopecia. While there are no large-scale clinical trials specifically testing beef liver as a supplement for hair growth, the rationale for its use is based on its dense concentration of these scientifically validated nutrients. As such, beef liver is often included in dietary approaches to support hair health, especially in the context of correcting underlying nutritional deficiencies.