Have you noticed an increasing number of hairs in your sink or hairbrush? Are you beginning to see more of your scalp when you look in the mirror? If so, you are not alone! Millions of men and women experience hair loss as they age, sometimes starting as early as their 20s or 30s. Depending on the reason for your hair loss, you may be able to reverse it or at least slow it down.
First, let’s recognize that some hair loss is normal. Hair experts estimate that a loss of approximately 50 to 150 strands of hair per day represents normal shedding for the human hair growth cycle. So, some hair in the sink or shower is nothing to be alarmed about. Sudden hair loss, or thinning hair over your entire head (and possibly other parts of your body), or clumps of hair falling out are considered unusual and should be discussed with your healthcare practitioner. Depending on the severity of your symptoms, he or she may recommend seeing a dermatologist or a hair specialist, known as a trichologist.
The fear of losing more hair is usually what prompts people to seek medical attention. Although some people may be driven by vanity, for others hair loss is devastating to their self-esteem. This seems especially true for women. In The Hormone Solution: Stay Younger Longer, Dr. Thierry Hertoghe notes that a hormone imbalance is just as likely to feed fear and erode self-confidence as it is to contribute to hair loss. He says, “Addressing any imbalance will not only improve the situation on top of your head, but within it as well.”
Possible Causes of Hair Loss
Because hair cells are replenished more quickly and visibly than most other cells, the condition of your hair is like a barometer of your overall health. Sudden or excessive hair loss can indicate an underlying problem, such as a vitamin or mineral deficiency, a hormone imbalance, toxicity brought on by something in your environment, or too much stress in your life.
Sometimes the cause for the hair loss can be treated or eliminated, resulting in new hair growth and healthier hair. Those individuals who have a genetic predisposition for early or excessive hair loss may not be able to fight it, but they can at least try to slow it down by being aware of factors that affect hair health.
Different hair conditions such as dandruff or breakage— prior to or in conjunction with hair loss—can be early warning signals for a variety of different problems or deficiencies (see chart above). For example, coarse or brittle hair may indicate low thyroid function. Scalp disorders such as dandruff, seborrhea, or psoriasis may indicate a fungal infection that has been accelerated by nutritional deficiencies.
In addition, environmental conditions and harsh hair products can damage healthy hair and accelerate hair loss brought on by other factors. For example, heavy metals and toxic chemicals can build up in your system and interfere with your body’s absorption of nutrients or hormone production. (In fact, hair testing is one of the EPAs means of testing for toxins.) Many people also participate in hobbies or have occupations that expose them to toxins, including painting, arts and crafts, landscaping or gardening (unless you are careful to use only organic products), electrical work, soldering, radiation therapy, and others. Limiting or eliminating your exposure to these toxins and harsh products should be one of the first things to try if you have excessive hair loss.
Many of the ingredients listed in shampoos, conditioners, and other hair treatments are known allergenics. These ingredients can cause dermatitis in some people, and may even be toxic.
Various diseases and medical conditions can also lead to thinning hair or bald patches. Thyroid disease (discussed below) is one of the most common explanations for hair loss. It may also occur with diabetes and autoimmune diseases such as lupus and HIV. Sudden, severe hair loss may indicate a liver dysfunction or other serious illness, so it is wise to bring it to the attention of your healthcare practitioner.
Parasites, such as ringworm, and fungal or yeast infections can also cause hair loss. If left untreated, these conditions can rob the body of nutrients by preventing the proper absorption of proteins, vitamins, and minerals necessary for healthy hair. Recognizing and treating an infection, especially a scalp infection, is critical to preventing total hair loss.
People often lose some hair about 2 to 4 months after the start of a severe or prolonged illness, or major surgery. This type of hair loss is most likely due to the stress of the illness or surgery and is also temporary, with hair returning as the body heals and regains its balance. Hair loss due to chemotherapy is also usually temporary, with new hair beginning to grow once the treatment is stopped.
Women typically lose some of their hair shortly after pregnancy and during menopause, most likely as a result of changing hormone levels. Most healthcare practitioners will first explore hormone imbalance as a possible cause for hair loss if there is no other obvious explanation. Fortunately, when this proves to be true, hormone treatments can usually reverse the trend.
Many different prescription drugs identify hair loss as a potential side-effect. If it is listed, some people may be affected, while others are not, due to subtle differences in body chemistry. Medications known to promote hair loss include many commonly prescribed drugs, including birth control pills, blood thinners, those that lower cholesterol, antidepressants, anticonvulsants, and drugs for high blood pressure, to name just a few.
Nutrition and Digestion
Healthy hair requires good nutrition, involving a wide variety of vitamins, trace minerals, amino acids, and essential fatty acids (see chart on page 2). As a result, poor nutrition will have a fairly immediate and obvious effect on hair health. Starvation dieting, rapid weight loss, and eating disorders often trigger some hair breakage or hair loss. Sometimes just introducing different foods into your diet, such as eating a lot of fried food over a period of days when you’re not used to it, can change the appearance and health of your hair.
Dr. Cass Ingram explains that the vegetable oils commonly used to fry foods can block the absorption of compounds critical to hair health. Dr. Jonathan Wright concurs, saying that “margarine and hydrogenated fats are detrimental to fatty acid metabolism and should be strictly avoided.” Healthy hair requires the proper combination of vitamins, minerals, and trace elements. For example, hair loss can result from too much vitamin A, not enough iron (anemia), low levels of zinc, and a host of other deficiencies or excesses. The difficulty in providing the proper nutritional balance is hinted at by the number of nutrients identified in the chart above. Dr. Hertoghe provides more specific information in his book regarding the various nutrients required and the recommended doses for maintaining healthy hair.
Improper digestion is another factor that can contribute to hair loss. Dr. Wright explains that a lack of pepsin (an enzyme essential for protein digestion) will interfere with the absorption of key nutrients. According to Dr. Ingram, “To have healthy hair, all eight essential amino acids are required. The hair, being mostly protein, will readily reflect poor protein status.” Many elderly people have problems with digestion, which can accelerate age-related hair loss.