Hair loss – its causes and treatments
Hair loss is a problem that generally affects men, although there are some conditions that can also
lead to hair loss in women. Whether male or female, hair loss can be distressing, so it is reassuring
to know that there are now some treatments available that will not only prevent further hair loss,
but will also encourage regrowth.
In men, loss of hair tends to be restricted to the top of the head, meaning the hair around the sides
and back is still present. Why it follows this pattern is unknown. However, it has now been
discovered that male hair loss is as a result of dihydrotestosterone (DHT), a chemical made from the
male sex hormone testosterone. The hair follicles on the top of the head are sensitive to DHT, and
when exposed to the chemical will stop producing new hair, eventually leading to baldness.
There are now several treatments that have been approved for use in male hair loss. The main drug
now used is Propecia, which has been licensed for use by the MHRA (Medicines and Healthcare
products Regulatory Agency) in the UK, and the FDA (Food and Drug Administration) in the USA.
Propecia works by blocking the production of DHT, meaning the hair follicles are not exposed to the
chemical. This is safe because DHT has no other known use in the adult body, so the only effect seen
is the regrowth of hair on the head. This drug is taken in the form of oral tablets. In clinical trials, it
has been shown to be effective 90% of the time.
Minoxidil was the first drug to be licensed for this purpose, and is still in use. It is sometimes known
under the brand name Regaine. It comes as a cream, which is applied to the affected area, usually
the top of the head. It increases blood supply to the area, providing more nutrients to the area and
preventing hair follicles from shrinking. In some cases, this cream can also encourage regrowth of
hair, though its main purpose is to prevent further loss. This is most effective if the hair loss process
has started recently, and is less effective if you already have a large bald area.
It is recommended that both Propecia and Minoxidil are taken together to achieve the best results.
Laser treatment is also available for hair loss, but as yet there has been no clinical research into how
effective this is, especially as it is normally combined with Propecia, Minoxidil, and use of hair
products that are designed to disguise loss of hair. Until this has been proven effective in trials, this
is probably one to avoid. Hair transplants are also an option; as these are taken from the back of the
head, the follicles are not sensitive to DHT.
To maintain healthy hair, it is also important that your diet contains sufficient vitamins and minerals,
particularly in women. You may wish to consider taking vitamin supplements if you have noticed
your hair becoming thinner recently, as the earlier you begin preventative measures or treatment,
the better the results will be.