четвртак, 12. април 2012.
Misconceptions About Hair Loss
Hair grows everywhere on the human body except on the palms of our hands and the soles of our feet, but many hairs are so fine they're virtually invisible. Hair is made up of a protein called keratin (the same protein in nails) produced in hair follicles in the outer layer of skin. As follicles produce new hair cells, old cells are being pushed out through the surface of the skin at the rate of about 15 cm a year. The hair you can see is actually a string of dead keratin cells. The average adult head has about 100,000 to 150,000 hairs and loses up to 100 of them a day. Hair loss can also be caused by burns, X-rays, and scalp injuries. The alopecia areata causes , a disease that often strikes children or teenagers, remain unexplained. It is thought to be an autoimmune disease, meaning that the immune system is overactive for unknown reasons and affects the hair follicles. In most cases the hair grows back, although it may be very fine and possibly a different color before normal coloration and thickness return. Below are some of them and why they're not true. Alopecia is Life Threatening alopecia areata are in good health and do not experience pain from the hair loss. DHT is The Only Culprit in Hair Loss While it is true that overproduction of the male hormone or androgen called DHT is an important cause of hair loss in men and women, it is not the only cause. DHT is a natural form of testosterone produced by an enzyme called 5-alpha-reductase. Binding of this metabolite to its receptors in the hair follicle is thought to lead to hair loss. Many chemical drugs and natural supplements either inhibit the production of DHT or prevent it from binding its follicular receptors. DHT, however, is required for normal sexual functions. Indiscriminate inhibition of this metabolite has led to sexual performance problems, such as impotence or erectile dysfunction. In addition to preventing the overproduction of DHT, your alopecia areata treatment regimen should also include providing nutrients and vitamins to strengthen existing hair, prevent hair fall out due to damage, and promote new hair growth. Improving blood circulation to the follicles can also be used treat hair loss. You Can Increase the Number of Hair Follicles You are born with all the follicles you'll ever have. The number of hair follicles is determined by genetics and cannot be changed by taking drugs or supplements. The only proven way to increase the number of follicles is by hair transplant surgery. Similarly, the diameter of hair shaft, the maximum length of growth, rate of hair growth, hair color, tendency to curl, and tendency to gray are genetically determined. Stress causes hair loss Hair loss may occur in extreme cases in which there's been surgery or an otherwise stressful event, which can cause a shutting down of hair production. However, it does not cause male pattern baldness, as hair growth will resume in time. Frequent hair brushing Some people have maintained that constant brushing increases scalp circulation and helps hair growth. However, because alopecia is primarily caused by the presence of DHT and genetic predisposition rather than blood flow, hair brushing will have no positive effect on hair growth. Smoking causes hair loss Recent studies by research groups such as the British Medical Journal (BMJ) have found sufficient evidence to claim there is a significant link between smoking and hair loss. It's still uncertain whether the connection is due to the effects of tobacco toxins, or the fact that smoking accelerates aging and other health problems. In the past, there were no effective treatments in sight for hair loss and hair thinning patients; the only solution was to cover up hair loss with hats and artificial hairpieces. Fortunately, there is much effective alopecia areata treatment on today's market that can either prevent future hair loss, or replenish balding hairlines. To learn more about alopecia, or to find out about natural alopecia areata treatment method it's best to visit Marbo Hair website.