A copper deficiency also is associated with colour changes or loss of colour from the hair.
The advised daily allowance for copper is 2 mg to 3 mg each day. A hair diet that contains several servings of copper-rich foods such as whole grain breads and cereals, shell-fish, nuts, offal meats, chicken, dried beans and peas, and dark green leafy vegetables will probably meet the daily recommendations for this mineral. If the hair diet is comprised of refined flours, grains, breads, and convenience and processed foods, copper intake might not be adequate to maintain the health of skin and hair.
Iron: An iron-poor hair diet can affect the nails. Brittle, fragile, New short haircuts for spring and dull nails or nails with ridges can be a result of poor iron intake. In a long-term deficiency the nails can become spoon-shaped. When this happens the nail either flattens out or tun es abnormally. Other signs of poor iron status are a smooth red tongue, a suppressed immune system, and frequent colds or infections. The most well-known symptom of iron deficiency is anaemia. This disorder can result in pale skin. (Figure 4, page 48)
Iron deficiency is a common form of malnutrition found in the West. Those people at risk include pre-menopausal women, the elderly, adolescents, infants, and children. Low-income groups, the old, and adolescents consume a limited variety of foods, have a reduced food intake, or have social or economic factors that interfere with daily food intake of iron-rich foods.