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Deficiency in a few micronutrients has been implicated in the pigment loss of hair, including ferritin, vitamin D, folate, vitamin B12, and selenium deficiencies. We recommend screening for these vitamins and minerals in patients presenting with premature graying of hair and subsequent supplementation of the deficient micronutrients [114]. Vitamin D is a fat-soluble vitamin synthesized in epidermal keratinocytes [53]. Vitamin D obtained from the diet or synthesis in skin is inactive and needs to be activated enzymatically.
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Iron is an essential trace element, and we absorb it naturally from foods we eat or supplements such as iron tablets. Iron deficiency can be due to poor diet, but is more commonly linked to internal bleeding or, in women, heavy periods or pregnancy. Iron deficiency is thought to affect over 500 million people worldwide. Iron from the food you eat is absorbed into the body by the cells that line the gastrointestinal tract; the body only absorbs a small fraction of the iron you ingest. The iron is then released into the blood stream, where a protein called transferrin attaches to it and delivers the iron to the liver.
selenium
Female pattern hair loss, also known as androgenetic alopecia, is the most common hair loss type in women. 'Menopause-related hair loss in women, often due to hormonal changes, manifests as thinning or shedding. Treatments include hormone replacement therapy (HRT) to restore hormonal balance, minoxidil to promote hair growth, and supplements like biotin and iron to support hair health.
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The most common cause of alopecia is an inherited condition called male- or female-pattern hair loss. However, if your hemoglobin levels remain low for a long period of time, you could start experiencing a thinning mane. If you think you have iron deficiency anemia, speak with a doctor before changing your diet or deciding on any supplements. Iron deficiency lowers the level of hemoglobin in your blood, which may reduce the amount of oxygen available to cells that cause hair growth. It can also affect people who don’t have enough iron, even if they haven’t received a diagnosis of deficiency.
"Postpartum hair loss is a frequent dermatologic concern and, as one may expect, may impact self-confidence and mental state," Weimann explains. We consulted board-certified dermatologists Rina Weimann, MD, FAAD, and Vladyslava Doktor, MD, to find out. Keep reading for everything you need to know about the relationship between iron deficiency and hair loss. Iron is a necessary mineral that is required for many bodily functions.
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The best iron supplements are the ones labeled ferrous sulfate, which is one of the most easily absorbed forms of iron. There are several ways you can increase your iron intake to improve your hemoglobin levels. It’s temporary, and iron deficiency-related hair loss can be reversed with some diet and lifestyle changes.
If you have iron deficiency anemia, it's usually because you're losing blood or not taking it in from the foods you eat. If you're pregnant, your iron storage has to provide hemoglobin to your baby and help with the increased amount of blood you have throughout your pregnancy. If you’re experiencing unusual amounts of hair loss despite dietary changes, it may be time to see your doctor for a diagnosis. So, you should not take any iron supplements to treat low ferritin without asking your doctor first. You may need higher amounts if you have a condition that interferes with your iron levels.
There is strong evidence that vitamin D exerts an anti-inflammatory and immunoregulatory effect, in addition to its important role in maintaining adequate serum levels of calcium and phosphorus [54, 56]. The mechanisms underlying the role of vitamin D in autoimmunity are not fully understood [54, 55]. Low vitamin D levels have been reported in several autoimmune diseases [54, 55, 57–60].

Survey data encompassing lifestyle and medical history from 55,929 women in the Nurses’ Health Study were investigated. The authors found that there was no significant association between dietary, supplemental, or total vitamin D intake and risk of developing AA [69]. Vitamin B12 is necessary for DNA synthesis, neurological function, and red blood cell formation [22]. The active forms of B12 are called methylcobalamin and 5-deoxyadenosylcobalamin. Vitamin B12 is a cofactor for methionine synthase and thereby affects the synthesis of nearly 100 substrates including DNA, RNA, and proteins [22].
Hemoglobin carries oxygen for the growth and repair of cells in your body, including the cells that stimulate hair growth. The relationship between iron deficiency and hair loss is complicated by a number of underlying causes and potential side effects. Ideally, by increasing their iron stores, a person may see an improvement in hair growth as well as any symptoms of iron deficiency anemia. However, the research does suggest that iron deficiency hair loss seems to be related to hair loss that does not scar the hair follicles.
However, this article will cover what we do know about vitamin deficiencies and hair loss, as well as what nutrient intakes can impact your hair. Large doses of iron can be given at one time when using iron dextran. Iron sucrose and ferric gluconate require more frequent doses spread over several weeks.
This may interfere with the cycle of hair growth and cause hair loss. The role of folate and vitamin B12 in nucleic acid production suggest that they might play a role in the highly proliferative hair follicle [43]. However, few studies to date have addressed the relationship between B vitamins and hair loss. Also, the authors found that serum levels did not vary with duration or activity of the disease [44]. In another study conducted in Turkey 75 subjects with AA and 54 controls were enrolled.
The London born songwriter and actress joins a long list of women, including Ashley Graham and Jada Pinkett-Smith, who have spoken candidly about their hair loss journey. Oral collagen supplements may be sold as pills, powders, or certain foods. They may be in the form of collagen peptides or hydrolyzed collagen, which are forms of collagen that are broken down and more easily absorbed. Collagen supplements contain amino acids (the building blocks of protein).