Deficiencies of Vitamin A commonly cause thickening of the scalp, dry hair and dandruff. Air pollution, smoking, very bright light and aspirin are some known inhibitors of vitamin A. Liver, fish oil, eggs, fortified milk, and vegetables red, yellow and orange are good sources for Vitamin A , as well as some dark green vegetables such as spinach.
You should be particularly cautious if you consume vitamin A supplements, because vitamin A is fat soluble, allowing the body to the store and making it easier for the body to have overdosed on Vitamin Ala overdose of Vitamin A can cause excessively dry skin and inflamed hair follicles, and in some cases ironically can cause hair loss. If you choose to consume vitamin supplements, consultation with a specialist first.
As mentioned above, the likelihood of overdose to achieve the consumption of vitamin A, dietary sources is negligible, so it is best to try to achieve the maximum possible consumption. Vitamin B works interdependently and therefore all levels of Vitamin B need to be well enough to stay healthy.
Vitamin B-6, folic acid, biotin, and vitamin B-12 are all key components to maintain healthy levels of hemoglobin in the blood, which is the iron-containing portion of the blood cells. The main function of hemoglobin is to carry oxygen from the lungs to the tissues of the body, so if these vitamins were deficient in one's body, then hair and skin would suffer for this.
Fortunately some of the tastiest foods contain vitamins. Vitamin B-6 is found in foods rich in protein, which is excellent because the body needs a sufficient amount of protein to also keep the hair growth.
The liver, chicken, fish, pork, kidney, and soybeans are good sources of B-6 and are relatively low in fat when not cooked fries. Folic acid is found in whole grains, cereals, nuts, green leafy vegetables, orange juice, yeast, wheat germ, and liver.
Meanwhile, meat, fish, poultry, eggs and other dairy products, provide healthy amounts of B-12. Biotin deficiencies are rare unless there is a severe case of malnutrition or a serious intestinal disorder, since a healthy gut produces biotin through good bacteria found there.
Note: If you know of any intestinal disorder you have and you have hair loss, talk to your doctor about biotin deficiencies and possible solutions.