Iron deficiency—the most common dietary deficiency—can cause hair loss.
This condition causes telogen effluvium (TE), which impairs hair growth. It balds.
Vitamin D promotes hair development and follicle health (6Trusted Source).
Alopecia areata and female pattern hair loss are associated with reduced vitamin D levels.
Zinc aids immunological function, protein synthesis, cellular division, and more.
It prevents hair follicle atrophy and delayed development. It aids hair follicle healing.
The hair bulb's cells develop and replace quickly
Because your follicles need protein and calories to develop and operate, hair is vulnerable to protein and calorie deficits.
Weight reduction can cause hair loss.
However, this usually occurs after bariatric surgery or a very low-calorie diet.
Supplements may help your hair stay healthy and grow faster. Other supplements may have the opposite effect. Some supplements cause hair loss.