What Causes Hair Loss in Men?

What is that for ?

There are many causes of hair loss in men. Although genetics might have something to do with it, you can’t place all the blame of thinning hair on mom and dad. Androgenic alopecia, otherwise known as male pattern baldness, is responsible for the majority of hair loss in men. Of course there are a variety of other reasons for hair loss in men, including illness or reactions to certain medications.

Sensitivity to Dihydrotestosterone (DHT)

What is that for ?

DHT causes the lifespan of hair follicles to shorten and eventually stop growing—so when DHT is suppressed, hair follicles flourish.

Male pattern baldness is generally characterized by a receding hairline and a thinning crown—areas that are sensitive to DHT. Other areas that are sensitive to DHT include hair at the temples and the mid-anterior scalp. Hair loss in these areas can eventually progress to baldness throughout the entire scalp area, resulting in a “horseshoe” pattern.

It takes extended exposure to DHT before hair loss occurs, making it easy to detect early and find an effective hair loss treatment.


Your genes have some involvement in the matter. Male pattern baldness tends to run in the family. Male pattern baldness is polygenic, so there’s just as much chance you will inherit it from your mother as you would your father. In fact, you have a higher chance of inheriting it from your mom, due to the presence of an androgen receptor gene commonly associated with the X, or female, chromosome. Even if baldness in men runs in the family, you may dodge a bullet since the gene needs to be “expressed” or turned on.


As men get older, hair follicles may shrink, leading to hair loss. Even hair found in the permanent zone—the back and sides of the scalp—may start to thin out. Luckily, some men retain enough hair in these areas that they can undergo procedures, such as a hair transplant.

Other Reasons for Hair Loss in Men

There are a number of other reasons for hair loss in men:

  • Men who wear their hair in cornrows, ponytails or dreadlocks may be more susceptible to hair loss due to stress placed on the hair follicles.
  • Trichotillomania, (i.e. a hair-pulling disorder) can cause hair loss.
  • Hypothyroidism (an underactive thyroid) due to birth abnormalities, autoimmune diseases or having the thyroid itself removed is one of the causes of baldness in men.
  • Vitamin deficiencies
  • Chemotherapy: One of the unfortunate side-effects of undergoing chemotherapy is hair loss.
    Stress can cause your body’s hormone’s to go “off-kilter” and lead to hair loss.

The Canadian Institute of Hair and Scalp Specialists offers a number of treatments for male pattern baldness. Our experience allows for efficient and safe procedures to be completed with lower costs to our customers. In addition to treatments, we also offer our patients a number of creams, shampoos and conditioners. Contact us for a risk-free, no-obligation consultation.

by Ken Robson

In business since August 1, 1986, I am the president and also a client at The Canadian Institute of Hair & Scalp Specialists. Having worked with a team of Doctors and Chemists over the years I have compiled a great deal of knowledge in this area, originally involved with a Pharmaceutical company manufacturing vitamins for the hair loss industry. Years ago I was fascinated by the new developments in this area as my own hair was beginning to thin. Studying Trichology at the Toronto clinic I then opened my own office and have enjoyed it ever since.