Why Is My Hair Thinning? 7 Common Causes of Hair Loss in Women

You notice more hair in the shower. Your ponytail feels smaller. Maybe your part looks wider than it used to.

And suddenly, you’re asking: “Why is my hair thinning?”

There may be a primary driver behind your hair loss, but there are often other underlying factors contributing to what you're experiencing. That’s why I want to understand the bigger picture before deciding what comes next.

Here are seven common factors I look at with my clients.

1. Stress

Physical or emotional stress can disrupt the hair-growth cycle and contribute to increased shedding, sometimes several months after the stressful event. Ongoing stress may also play a role in persistent shedding.

2. Hormonal Changes

Pregnancy, postpartum, perimenopause, menopause, thyroid changes, hormone replacement therapy (HRT) and changes in hormone-related medications can all coincide with changes in your hair.

3. Nutrition

Protein, iron, vitamin D, zinc, B vitamins and other nutrients support healthy hair growth. But instead of blindly adding supplements, I want to understand what your body may actually need.

4. Rapid Weight Loss or Diet Changes

Significant weight loss, reduced calorie or protein intake, major diet changes and changes associated with medications such as GLP-1s may contribute to increased shedding.

5. Genetics

Genetics can be a primary driver of progressive thinning. You may notice a widening part, more visible scalp or an overall decrease in density.

6. Medications, Illness or Health Changes

Illness, surgery, fever, medication changes and other changes in your health may affect your hair cycle. This is why I often ask what was happening several months before you noticed the shedding.

7. Your Scalp Health

The condition of your scalp plays an important role in supporting healthy hair growth. Excess oil, product buildup, irritation and inflammatory scalp conditions can affect the environment surrounding your hair follicles.

Sometimes, changes in your scalp aren't immediately noticeable, which is why taking a closer look can be an important part of understanding your overall hair health.

So, What’s Contributing to Your Hair Loss?

Two people can both say, “My hair is thinning,” and have very different things happening underneath.

There may be one primary driver, several contributing factors or a combination of both.

During a Hair + Scalp Assessment, we review your hair-loss pattern, timeline, health history, lifestyle and scalp condition. I also use a dermascope during in-person visits to examine your scalp and hair more closely. Depending on your individual needs, additional testing may help us better understand potential contributing factors.

The goal is simple: understand what may be happening before deciding what to do next.

If you've noticed consistent shedding, less density, a widening part, changes around your hairline or new scalp concerns, it's worth taking a closer look.

Both in-person and virtual appointments are available, along with additional testing options based on your individual needs.

For those local to the Twin Cities, in-person Hair + Scalp Assessments are available at my Edina studio. If you're interested in working together virtually, please schedule a discovery call to get started or reach out directly at info@hollystrack.com.

You can learn more about my approach, assessments and testing options at hollystrack.com.