One of the most common concerns I hear from women in my practice is, "My hair is thinning. What is happening?"
Sometimes it's a woman who recently had a baby and is shocked by the amount of hair she's losing in the shower. Sometimes it's a woman in her forties or fifties who notices her ponytail isn't as thick as it used to be. Other times it's a woman struggling with PMOS, weight gain, insulin resistance, or hormonal changes who feels like her hair has gradually become thinner over the years.
The reality is that hair loss is rarely caused by just one thing.
Hair is often a reflection of what is happening internally. Hormones, nutrition, stress, inflammation, genetics, metabolism, and even sleep can affect the health of the hair follicle. When I evaluate a woman for hair thinning, I'm not just looking at her scalp. I'm looking at the whole picture.
Many women love their hair during pregnancy. It often feels fuller, thicker, and healthier than ever before.
Then several months after delivery, the shedding starts.
This can be alarming, especially for first-time mothers who are not expecting it. Clumps of hair may come out in the shower or while brushing. Some women worry they are going bald.
Fortunately, this type of hair loss is usually temporary.
During pregnancy, higher estrogen levels keep more hairs in the active growth phase. After delivery, hormone levels fall and many of those hairs enter the shedding phase at the same time. The result is noticeable hair loss, typically beginning two to four months after childbirth.
Most women will see improvement within the first year postpartum, although recovery can take longer if there are additional factors involved, such as iron deficiency, thyroid dysfunction, poor sleep, chronic stress, or inadequate nutrition.
One thing I often tell patients is that hair is extremely sensitive to hormones.
As women move into perimenopause and menopause, estrogen and progesterone levels begin to decline. At the same time, the relative influence of androgens becomes greater. This hormonal shift can affect the hair follicle, causing hair to become finer, thinner, and slower to grow.
Many women tell me they notice more scalp showing, especially around the part line. Others feel their hair has lost volume or simply doesn't grow the way it used to.
These changes are common, but they should not automatically be dismissed as aging.
In many cases, evaluating hormone levels and addressing underlying hormonal changes can be an important part of improving hair health.
Hair thinning is particularly common in women with PMOS.
Many women associate PMOS with irregular periods, weight gain, acne, or difficulty losing weight, but hair loss can be one of the most frustrating symptoms.
The reason is that PMOS is often associated with higher androgen activity and insulin resistance. Over time, these hormonal and metabolic changes can affect the scalp's hair follicles, causing them to produce progressively thinner hairs.
This process tends to happen gradually, which is why many women don't notice the extent of the thinning until years later.
Treating the underlying metabolic dysfunction is often just as important as treating the hair itself.
With the popularity of GLP-1 medications for weight loss, many women have become concerned about reports of hair loss while taking these medications.
In most cases, the medication itself is not the problem.
Hair loss is more commonly related to rapid weight loss, decreased protein intake, nutritional deficiencies, or the stress that significant weight loss can place on the body.
Hair follicles require tremendous energy and nutritional support. When calories drop dramatically or protein intake is inadequate, hair growth can be affected.
For women using GLP-1 medications, I encourage a strong focus on protein intake, muscle preservation, proper nutrition, and routine monitoring of important nutrients such as iron and vitamin D.
Hair is primarily made of protein, so it should not be surprising that nutrition plays a major role in hair growth.
One of the most common abnormalities I find in women with hair thinning is low iron stores. In fact, many women are told their blood count is normal while their ferritin level, which reflects stored iron, is far from optimal.
Vitamin D deficiency is also extremely common.
In addition, women who are dieting, skipping meals, following highly restrictive eating plans, or rapidly losing weight may not be getting enough protein or key nutrients needed for healthy hair growth.
This is why a proper evaluation is important. Guessing which supplement to take often leads to frustration and wasted money.
Not every woman who notices extra hair in her brush needs extensive testing. However, there are certain situations where further evaluation makes sense.
If hair loss is persistent, worsening, associated with fatigue, accompanied by menstrual irregularities, or occurring during perimenopause, menopause, or PMOS, it is worth taking a closer look.
Laboratory testing may include thyroid function, iron studies, vitamin D levels, metabolic markers, and hormone evaluation when appropriate.
The goal is to identify and address the underlying reason the hair loss is occurring.
One of the biggest mistakes I see is women purchasing multiple supplements online without understanding why they are losing hair in the first place.
Treatment should be individualized.
For some women, correcting iron deficiency makes a tremendous difference.
For others, balancing hormones during perimenopause or menopause may help support healthier hair growth.
Women with PMOS may benefit from addressing insulin resistance and androgen excess.
Medications such as spironolactone are commonly used in women whose hair thinning is driven by androgen activity. By blocking androgen effects at the hair follicle, spironolactone can help slow progression and improve hair density over time.
Topical and oral minoxidil may also be appropriate for selected patients and remain among the most studied treatments available for female pattern hair loss.
In recent years, we have seen exciting advances in non surgical hair restoration.
Platelet Rich Plasma, commonly known as PRP, uses growth factors derived from a patient's own blood to support follicle health and stimulate hair growth.
Another newer treatment is Alma TED, a completely noninvasive treatment that uses ultrasound based technology to deliver specialized hair growth serums into the scalp without needles or injections.
Many women appreciate Alma TED because there is no downtime, no discomfort, and it can be combined with other treatment approaches such as nutritional support, hormone optimization, PRP, or medical therapy.
This is probably one of the most common questions I receive.
The answer is yes and no.
A quality hair supplement can be helpful if it addresses a nutritional deficiency or provides nutrients that support healthy hair growth. Ingredients such as protein building amino acids, collagen, iron, vitamin D, zinc, and B vitamins may all play a role depending on the individual's needs.
However, no supplement can overcome untreated thyroid disease, significant hormonal imbalance, severe iron deficiency, menopause related hormonal changes, or PMOS on its own.
Hair supplements should be viewed as one piece of the puzzle rather than the entire solution.
Hair thinning is incredibly common, but it is not something women should simply accept without understanding the cause.
Whether the trigger is postpartum hormone changes, perimenopause, menopause, PMOS, insulin resistance, stress, nutritional deficiencies, weight loss, or genetics, there is usually a reason behind the change.
The women who achieve the best results are those who take a comprehensive approach. That means looking at hormones, metabolism, nutrition, lifestyle, and scalp health rather than searching for a single miracle product.
Healthy hair starts with a healthy body. When we identify and address the underlying factors contributing to hair loss, we are often able to improve not only hair growth, but overall health and wellbeing as well.
