Hair Restoration Blog

Question:

Dear Dr. Mohebi,

Dr., I had a question: say I would use proscar now and took it for a while, after how long based on studies is it possible to see adverse side effects, if any? The reason why I ask is because when I went and read the messages on the forums, I saw positive and negative feedbacks. One person used proscar for 7 years and saw nothing but great results. I would like to give it a shot and see if I am lucky, hopefully. Thank you! Have a great weekend,

Answer:
The side effects of finasteride (Propecia/Proscar) could be seen anytime from right after starting it to months after starting finasteride. If you read the articles on adverse effects of finasteride you can clearly see that there is a small difference between the rates of side effects from the people who took placebos to the ones taking finasteride.

Let’s face it; you are prescribing a drug to a patient telling him that it works through altering your male hormones. What do you think the chances are that the patient will have problems with his sex drive?

The good news is that the side effects of finasteride are few and the most problematic one (decreased sex drive) is only seen in one out of a hundred patients. The other good news is that even if you are in that one percent category and you decide to continue using finasteride anyway, after one year of using finasteride the rate of side effects decreases to about the rate that was shown in people who only took a placebo.

Dihydrotestosterone (DHT) is a byproduct of the hormone testosterone, formed primarily in the prostate gland and hair follicle cells. Hair follicles contain DHT receptors. Over time as males produce more and more DHT, the DHT molecules cause hair follicles to miniaturize and eventually fall out permanently in people who are genetically prone to baldness. In other words, some males have more hair follicles with these receptors than others.

DHT is the primary contributing factor in male pattern baldness. Unlike men with male-pattern baldness, women with female-pattern baldness are usually not characterized by increased production rates of DHT. Women with increased levels of DHT may develop certain male secondary sex characteristics, including a deepened voice and facial hair. Hair in the Crown and top of the head are usually loaded with these receptors in men with male pattern baldness. But the hair on the sides and the back, termed the permanent zone or donor area, are not affected by DHT. This allows us to transplant hair from the donor area into the frontal area without fear of it falling.

The transplanted hairs keep their resistance to DHT after hair transplant. Propecia is a drug that decrease the production of DHT by blocking the enzyme 5-alpha reductase that converts testosterone to DHT. This is how Propecia is effective in treating hair loss. Hair loss patients will decrease levels of DHT when they are on Propecia and this will help maintain and un-miniaturize hair follicles or even increase the size of hair shaft within the first year of using them.

Question:

Hi, My boyfriend here wants to know what he should do to prevent more hair loss. He has hair now but it’s receding a bit on his front at right and left sides.  He’d be most grateful for some advice. (Or I could just listen on Saturday!!)

Answer:

The Saturday radio show is going to be a 55 min program on hair loss with a focus on male pattern hair loss. I am sure you will find it useful. Also we have an online consultation page on our website that allows patients from all over the world to ask questions about the characteristics of their own hair and hair loss.

As a general rule, most young men can use Propecia (generic: finasteride 1mg/day), if they do not have any contraindication (allergic reaction or other negative side effects) for its use to prevent further hair loss or slow down the hair loss process. I generally do miniaturization studyies on all my patients to map out their hair loss pattern before starting them on Propecia or any other hair loss prevention medication. This way we can measure their response to the effect of treatment and optimize the medical or surgical treatment if needed.