Poor diet can absolutely affect the health of your hair. Eating regiments lacking sufficient protein or iron, too much Vitamin A, drastic weight loss programs, and eating disorders can all affect the growth cycle and the condition of your hair.
Protein: When the human body doesn’t get enough protein, it rations and divides the only protein available. One way the body can ration protein is to shut down hair growth. Typically about 2-3 months after the body recognizes the insufficient amount of protein, shedding can occur.
Adding more protein to your diet can help stop the hair loss- meats, eggs, and fish are always high in protein. Vegetarians can get more protein by adding nuts, seeds, and beans to their diet.
Crash Dieting: Starving yourself forces the body to direct its energy towards essential and main functions—like helping your heart and brain function properly—as opposed to keeping healthy hair follicles. Many doctors will say that when diagnosing anorexics, one of the main symptoms is hair loss.
Eat a healthy diet with plenty of lean protein like fish, chicken, lentils and beans. After all, hair is MADE of protein. Experts say that protein should total about 25 to 35% of your total daily calorie intake.