The causes of hair loss involving dieting and poor nutrition (extracted from the website of American Academy of Dermatology http://www.aad.org/ )

The causes of hair loss involving dieting and poor nutrition (extracted from the website of American Academy of Dermatology http://www.aad.org/ )

Many things can cause hair loss. The causes involving dieting and poor nutrition are:

(1)   Weight loss: Some people see hair loss after losing more than 15 pounds. The hair loss often appears 3 to 6 months after losing the weight. This hair loss is common. The hair re-grows without help.

(2)   Vitamin A: Too much vitamin A can cause hair loss. People can get too much of this vitamin through vitamin supplements or medicines. Once the body stops getting too much vitamin A, normal hair growth resumes.

(3)   Protein: When the body does not get enough protein, it rations the protein it does get. One way the body can ration protein is to shut down hair growth. About 2 to 3 months after a person does not eat enough protein, you can see the hair loss. Eating more protein will stop the hair loss. Meats, eggs, and fish are good sources of protein. Vegetarians can get more protein by adding nuts, seeds, and beans to their diet.

(4)   Iron: Not getting enough iron can lead to hair loss. Good vegetarian sources of iron are iron-fortified cereals, soybeans, pumpkin seeds, white beans, lentils, and spinach. Clams, oysters, and organ meats top the list of good animal sources of iron.

(5)   Eating disorder: When a person has an eating disorder, hair loss is common. Anorexia (not eating enough) and bulimia (vomiting after eating) can cause hair loss.

Info source:

http://www.aad.org/dermatology-a-to-z/diseases-and-treatments/e---h/hair-loss/who-gets-causes/hair-loss-who-gets-and-causes