The reasons for hair loss may be varied, and the lack of some important nutrients is one of them. The following are some common cases of hair loss caused by nutritional deficiency in the body:

Lack of protein: Because the main component of hair is protein, lack of protein may make hair fragile, dry and easily broken.

Iron deficiency: Iron is the key element to keep hair healthy and grow. Iron deficiency can lead to anemia and hair loss.

Zinc deficiency: Zinc is a necessary trace element to maintain hair growth. Zinc deficiency may lead to thinning and shedding of hair.

Lack of vitamin B 12: Vitamin B 12 is one of the essential vitamins for hair growth. Lack of vitamin B 12 may lead to hair loss and thinning.

Lack of vitamin D: Vitamin D helps to maintain scalp health and hair growth. Lack of vitamin D may cause hair to become brittle and fall off.

To sum up, the deficiency of protein, iron, zinc, vitamin B 12 and vitamin D is one of the possible reasons for alopecia. If your hair falls off a lot in a short time, it is recommended to consult a doctor as soon as possible to determine the specific reasons and take corresponding treatment measures.