Explained – The role of DHT in hair loss
What makes men and women go bald?
A question with multi-dimensional answers! Those of you who follow our blogs, know this! You would have read multiple pages on the topic!
Hair loss in men is a very common sight, right? Walk around any place and count the number of guys you see with a receding hairline! Research has shown that about as high as 85% of men face major hair thinning issues by the time they're 50. Some, unfortunately, start to lose theirs even before they turn 21! A receding hairline is every man’s biggest problem, as is hair thinning or hair fall, a nightmare for women.
What if we told you, that there is something in our body, in all of us, that can trigger the death of hair follicles.
One of the biggest enemies to your hair is something that is within you, DHT - dihydrotestosterone, a hormone that, unfortunately, apart from its primary function, causes hair follicles to miniaturise. It is perhaps the common contributor to male and female pattern thinning. Its effect is more pronounced in males, while it affects women who have a history of hormonal fluctuations. Women who use oral contraceptives in an unchecked way are also prone to such hormonal imbalances.
Interestingly, for men, DHT is the most important hormone as it ensures hair growth in other parts of the body! It is this same hormone that is responsible for the growth of hair on your chest, back and other areas as a male. And it is the same one that causes male pattern baldness!
Let us understand this culprit better in order to tackle the issue effectively. ‘Cos the good news is, hair loss caused by DHT is treatable!
What is DHT?
Dihydrotestosterone (DHT) is a sex hormone, which is basically a derivative of testosterone. It is produced naturally in the body and plays a significant role in developing certain masculine characteristics such as facial and body hair, prostate, muscle growth, and a deeper voice. It is this hormone that is responsible for the formation of the male genitalia during pregnancy. This hormone is present in both males and females, with the levels being different in each and thereby impacting each at different intensities.How does DHT affect your hair?
Your body generates DHT as a byproduct of testosterone. A certain enzyme, the 5α-Reductase, converts a certain proportion of your testosterone into DHT. If you are genetically susceptible, then this DHT binds the receptors in your hair follicles, on your scalp and leads to their miniaturisation. The follicles get weakened, shrink and eventually can die. And as you know, with the death of a hair follicle, that particular hair’s growth cycle comes to an end! Some research and studies have proved that it's not the amount of testosterone that’s circulating which creates the concern, but it is the DHT, binding to those receptors in scalp follicles, that’s the culprit. DHT can shrink a hair follicle so much making it almost impossible for it to survive.Does it affect only men?
This process of testosterone converting to DHT occurs in both men and women. However, under normal conditions, a woman will just have a minute fraction of the level of testosterone that a man would have. Now when this condition changes, and if there is a rise of DHT in her body, she will face hair loss. Studies have shown that even a lower level of DHT can trigger hair loss in women. So, what happens when the DHT levels go off the charts? Now while we don’t have to worry about DHT, if it reaches excessive levels, it leads to hair loss. High levels, of this hormone form, blocks essential nutrients from reaching your hair follicles. Whether it is the percentage of testosterone getting converted to DHT going high, or the testosterone levels in itself going high - both are of concern! If you want your hair to remain unaffected and continue to grow through its cycle, you will basically need to ensure that the DHT levels are kept balanced. What does ‘balance’ here mean? Men and women have both male and female hormones. And the hormones, as you know, operate best when they are in balance - as delicate as that is in most cases! Now, even when the male hormones, the androgens, are at normal levels, if there is a dip in its counterpart - the female estrogenic hormones - this triggers the rise in DHT. This imbalance causes hair loss, amongst other concerns. Any hormonal imbalance, as you have learned about say thyroid disorder or pregnancy or postpartum, greatly influences the hair’s growth cycle and the phases within it. And as with the hair growth cycle, hormones too undergo a cyclical pattern. Testosterone in some men is known to drop each decade once he crosses 30. Women’s hormone levels change with each milestone such as puberty, pregnancy, postpartum and especially at menopause and beyond when there is a sharp dip. The cyclical nature of both hormones and the hair growth cycle makes it tricky to maintain a balance indeed! What you need is a discipline with your lifestyle, diet and hair care routine, to ensure you are able to pull through all those milestones without any major concern. And seek professional help when it is needed, without hesitation. What kind of hair loss does DHT trigger? What to watch out for? Androgenic or androgenetic alopecia, commonly known as male or female pattern thinning or hair loss, is the usual type of hair loss that is seen triggered by DHT. This hair loss is pronounced in those genetically susceptible to the condition. In women, this kind of hormonal hair loss renders itself in a different pattern from how it happens in men. While with MPT, a horseshoe-like receding hairline pattern is observed, in women with FPT, there is diffuse thinning of hair across the entire scalp. And a woman will not have the receding frontal hairline as men do. Female pattern baldness progresses somewhat as mentioned below,- There is diffuse hair loss across all sections of the scalp.
- Thinning starts on the top portion of your head, around the hair partition.
- The hair partition starts widening, showing off the increased thinning.
- The hair thinning progresses and results in scalp becoming visible in portions.
- The stages are measured using the Ludwig Scale, which grades the severity of female-pattern hair loss. On reaching stage 3 on this scale, it becomes difficult to regain hair.
- It starts with the thinning of hair around the temples. There is a very slight recession that often goes unnoticed or ignored. The hairline recedes slightly above the upper brow crease on your forehead.
- The hairline at the temples moves further inward, creating a M shaped hairline. When this progresses, there will be little or no hair in the temporal region.
- The hair at the crown thins out and there is hair loss at the vertex, at the back of the head or in front of the head.
- The hairline then starts to show signs of the typical horseshoe-shape, associated with MPT.
- Hairline then creeps up to the top of your head. There is little hair remaining on your crown, and it is very thin and fine.
- If left unattended until after this stage, the head goes completely bald. The stages are accurately diagnosed using the Norwood scale.
- Excessive hair fall, does it seem to be more than usual?
- Change in hairline? Perhaps compare your clicks over the past year or two...check for a pattern!
- Noticeably less volume of hair?
- Hair thinning or hair loss?
- Stimulates hair growth at the root
- Prolongs the life cycle of hair
- Fully restores the vitality of the hair
- Helps make hair denser
- Combats hair thinning
- Controls hair loss
- Restores hair regeneration