Hormones and Hair Growth

Hormones and Hair Growth

Androgens, a group of male hormones, are responsible for the development of male characteristics, including body hair growth.

Hormones play a critical role in regulating hair growth. Androgens, a group of male hormones, are responsible for the development of male characteristics, including body hair growth. However, they also play a role in regulating hair growth in both men and women.

Dihydrotestosterone (DHT), a byproduct of testosterone, is a hormone that can bind to hair follicles, causing them to shrink and produce thinner, shorter hairs. This process, known as miniaturization, can lead to hair loss and baldness over time.

Estrogen, a female hormone, also plays a role in hair growth. It promotes hair growth by extending the anagen (growth) phase of the hair cycle and delaying the catagen (transition) phase. However, hormonal imbalances, such as those that occur during menopause or pregnancy, can lead to hair loss.

Thyroid hormones also play a role in regulating hair growth. An overactive or underactive thyroid gland can cause hair loss, thinning, and changes in hair texture.

Understanding the role of hormones in hair growth is crucial for identifying the underlying causes of hair loss and developing effective treatment plans. If you’re experiencing hair loss, it’s essential to consult a healthcare provider or a dermatologist to determine if hormonal imbalances are contributing to your hair loss and explore treatment options.

What are Hormones and How Do They Affect Hair Growth?

Our hair grows in cycles, with each cycle made up of three phases: growth (anagen), resting (catagen), and shedding (telogen). Hormones play a significant role in regulating these phases.

The anagen phase is when the hair follicle starts to grow a new strand of hair. This phase can last for several years, and is determined by the length of our familial hairline. The length of this phase is also influenced by hormones. For example, women who are pregnant or taking birth control pills may have a longer anagen phase due to increased levels of estrogen.

The catagen phase is when the hair follicle shrinks and the strand of hair becomes detached from the blood supply. This phase lasts for about two weeks.

The telogen phase is when the strand of hair falls out and a new one begins to grow in its place. This phase usually lasts around three months. After the telogen phase, the cycle begins anew with the anagen phase.

Hormones can affect all three phases of hair growth, but they are most influential during the anagen phase. For example, testosterone lengthens the anagenphase, while DHT (dihydrotestosterone) shortens it. DHT is produced when testosterone interacts with 5-alpha reductase enzymes in our bodies. It’s thought that DHT contributes to male pattern baldness by miniaturizing hair follicles and causing them to produce thinner strands of hair.

Common Hormonal Imbalances and Their Effects on Hair Growth

There are many different hormonal imbalances that can cause hair loss. The most common ones are:

1. Hypothyroidism: This is when your thyroid gland doesn’t produce enough of the hormone thyroxine. This can lead to hair loss all over your body, including your scalp, eyebrows, and eyelashes. It can also make your hair thin and brittle.

2. Hyperthyroidism: This is when your thyroid gland produces too much of the hormone thyroxine. This can lead to hair loss on your scalp and body, as well as making your hair thin and brittle.

3. PCOS (Polycystic Ovarian Syndrome): This is a hormonal imbalance that affects women of childbearing age. It can cause hair loss on the scalp, as well as excess facial and body hair growth. PCOS can also make it difficult to get pregnant.

4. Menopause: During menopause, women’s bodies go through a lot of changes due to declining estrogen levels. One of these changes is hair loss on the scalp. Menopause can also cause vaginal dryness, hot flashes, night sweats, mood swings, and weight gain.

Nutrients for Healthy Hair Growth

There are many nutrients that are essential for healthy hair growth. One of the most important is biotin, which is a water-soluble vitamin that helps to metabolize fats and proteins. Biotin is found in many foods, including eggs, nuts, and dark leafy greens. Another important nutrient for hair growth is iron, which helps to transport oxygen to the cells and provides structure to the hair follicle. Iron can be found in meat, poultry, fish, legumes, and leafy green vegetables.

Treatments for Hormonal Imbalances

There are many different ways to treat hormonal imbalances. Some people may need to take medication, while others may only need to make lifestyle changes.

If you have a hormonal imbalance, it is important to talk to your doctor about the best treatment for you. There are many different options available, and the best option for you will depend on the cause of your imbalance and your symptoms.

Medications that can be used to treat hormonal imbalances include birth control pills, spironolactone, and finasteride. Birth control pills can help regulate hormones and reduce excess hair growth. Spironolactone is a diuretic that can also help regulate hormones and reduce hair growth. Finasteride is a medication that is commonly used to treat baldness in men, but it can also be used to treat excess hair growth in women.

In some cases, lifestyle changes may be all that is needed to treat a hormonal imbalance. If your hormone levels are off because of stress, changing your lifestyle to reduce stress may help. Eating a healthy diet and getting regular exercise can also help balance hormones and reduce hair growth.

Natural Alternatives for Hair Loss Prevention

Hormones are one of the main drivers of hair growth, so it’s no surprise that imbalances can lead to hair loss. But there are a number of natural alternatives that can help to prevent hair loss and promote new growth.

One such alternative is saw palmetto. This herb has long been used to treat various urinary and reproductive issues in men, but more recent research has shown that it can also help to block the production of DHT, a hormone that’s linked to hair loss. Another option is green tea. This beverage is full of antioxidants that can help to protect the scalp and hair follicles from damage. Plus, it’s thought to promote new hair growth by stimulating the production of keratinocytes, cells that play a key role in the creation of new hair strands.

If you’re looking for something topical, consider using rosemary essential oil. This oil has been shown to increase circulation and encourage cell regeneration, both of which are necessary for healthy hair growth. To use, simply add a few drops to your shampoo or conditioner, or massage directly into the scalp.

Summary & Takeaways

Assuming you’re referring to the blog article titled ‘Hormones and Hair Growth: What You Need to Know’:

Our hair goes through different growth stages throughout our lives, which is determined by our hormones. While we cannot control the hormonal changes that happen to us, there are measures we can take to help manage surprising hair loss during these transitions.

Here are the key takeaways from the article:
– There are three main phases of hair growth: anagen (active growth), catagen (transitional phase), and telogen (resting phase).
– The anagen phase can last anywhere from 2-8 years, during which time our hair grows about 1 cm per month.
– About 85% of our scalp hair is in the anagen phase at any given time.
– The length of the other two phases, catagen and telogen, are much shorter in comparison; lasting only a couple of weeks each.
– It’s normal to shed 50-100 hairs per day, but anything more than that could be a sign of a hormonal imbalance.
– There are many different factors that can contribute to hormone-related hair loss, including menopause, childbirth, polycystic ovary syndrome (PCOS), thyroid problems, and stress.
– If you experience sudden or significant hair loss, it’s important to consult with a doctor to rule out any underlying medical conditions.


Hormones play a vital role in regulating hair growth, and imbalances can lead to hair loss and thinning. Androgens, estrogen, and thyroid hormones all impact hair growth in different ways.

If you’re experiencing hair loss or changes in hair growth, it’s essential to consult a healthcare provider or a dermatologist to determine the underlying cause. Hormonal imbalances, along with other factors like genetics, nutrition, and lifestyle, can contribute to hair loss and thinning. Identifying the underlying cause can help develop an effective treatment plan, which may include medication, hormone therapy, or lifestyle changes.

Maintaining overall health is crucial for promoting healthy hair growth. Eating a balanced diet, managing stress, and getting enough exercise can all help to regulate hormone levels and promote healthy hair growth. By taking a comprehensive approach to hair health, you can achieve luscious, healthy locks and feel confident in your appearance.