Hair loss during pregnancy: What’s normal, what causes it, and what you can do

While pregnancy is often associated with thicker, fuller hair, some women notice increased shedding instead. Seeing more hair on your pillow or collecting in the shower can be unsettling, especially when you were expecting the opposite. Although unexpected symptoms can be worrying during pregnancy, hair loss does not automatically signal a problem. There are many possible causes, and most are temporary and manageable.

‍

Is hair loss normal during pregnancy?

Yes, hair loss can be normal during pregnancy for some women. However often the opposite is true and many women will notice that their hair becomes thicker during pregnancy. This is because higher estrogen levels during pregnancy keep hair in the growth phase (anagen) for longer, resulting in less hair falling out. However, for some women, hormonal and other changes during pregnancy can trigger increased shedding instead.

‍

How common is hair loss during pregnancy?

Most women won’t experience noticeable hair loss during pregnancy, in fact many report thicker hair particularly in the second and third trimesters. However, a smaller proportion of women notice increased shedding, most often in the first trimester when hormone levels are rapidly changing.

Because pregnancy-related hair changes are not routinely tracked in larger studies, it is difficult to give exact numbers. What is clear is that noticeable hair loss during pregnancy is less common than postpartum hair loss, but when it does happen it is usually temporary. 

How much hair loss is normal during pregnancy?

It is normal to shed around 50 to 100 hairs per day, whether you’re pregnant or not. During pregnancy, you may be more attuned to the changes going on in your body and therefore more likely to notice this shedding. 

Hair loss may still fall within the normal range even when it’s heavier than normal for your hair. However, losing large clumps, noticing widening partings, or seeing visible thinning at the scalp is not typical; and may point to an underlying issue.

When does hair loss usually happen?

When hair loss occurs during pregnancy will depend on the underlying cause. If caused by fluctuating hormone levels then it’s more likely to occur in the first trimester whereas if it's related to an underlying condition like iron deficiency or thyroid changes then it may occur later on. It’s important to note however that postpartum hair loss, after the baby is born, is far more common than hair loss during pregnancy.

What causes hair loss during pregnancy?

Hair grows in cycles, and pregnancy can disrupt the normal rhythm of these cycles in several ways. In some women, this leads to telogen effluvium, which is the most common cause of diffuse hair shedding.

Telogen effluvium occurs when a physical or emotional stress pushes a larger number of hairs than usual into the resting (telogen) phase. About two to three months later, those hairs begin to shed.

Common ways pregnancy can trigger telogen effluvium:

• Hormonal shifts. Rapid changes in estrogen and progesterone can push more hair into the resting phase which leads to increased shedding a few months later.
• Nutrient deficiencies. Low iron and other nutrient deficiencies can impair hair growth especially if nausea or vomiting limits food intake.
• Physical and emotional stress. Severe nausea, illness, fatigue, or emotional strain can trigger telogen effluvium.
• Thyroid disorders. Pregnancy can unmask or worsen thyroid disorders, both of which can trigger hair loss.

Other causes of hair loss during pregnancy:

• Non-pregnancy-related factors. Hairstyling habits like tight ponytails, braids, or extensions, or the use of harsh chemicals and heat treatments can all lead to increased hair loss. 

How to prevent hair loss during pregnancy

While you cannot always stop pregnancy-related hair loss, you can support healthy hair growth and reduce unnecessary shedding with a few simple strategies.

• Pay close attention to nutritional balance. During pregnancy, it is particularly important that you’re meeting recommended nutritional guidelines. Ensuring you have enough protein, iron-rich foods, healthy fats, and other micronutrients is important for both you and your baby’s health. 
• Take prenatal vitamins as directed. These help to cover common gaps, but avoid extra supplements unless advised by your healthcare provider.
• Be gentle with your hair. Avoid tight hairstyles, rough brushing, and frequent heat styling. Let hair air-dry where possible and use a wide-tooth comb.
• Choose mild hair products. Volumizing and sulfate-free shampoos can make thinning less noticeable. 
• Track your symptoms. Pay attention to how much hair you are shedding and whether your hair is noticeably thinning or shedding in certain areas.
• Seek medical advice. If your shedding feels excessive then seek advice from a healthcare professional. They may recommend a blood test. Don’t start any hair loss treatment, even if purchased over-the-counter (without a prescription), without first checking with your doctor that it is safe during pregnancy.

When to seek medical advice

Hair loss during pregnancy is often temporary, but you should still speak to your healthcare provider if you notice any of the following:

• Sudden or severe shedding, especially if it’s happening in clumps
• Visible thinning, a widening parting line, or bald patches
• Hair loss along with any other concerning symptoms like dizziness, fatigue, or palpitations
• A personal history of thyroid disease, anemia, or autoimmune conditions
• Shedding that continues or worsens 

Your hair shedding may be due to an underlying condition such as a thyroid problem or anemia. These conditions are treatable but identifying them early helps protect both your health and your baby’s wellbeing.

Key takeaways

• Hair loss during pregnancy can be normal and is often temporary.
• Hormonal shifts, nutrient deficiencies, stress, and telogen effluvium are common causes for hair loss during pregnancy.
• Gentle hair care and making sure you have optimal nutrition can help reduce shedding.
• Sudden, severe, or persistent hair loss should be discussed with your healthcare provider as it may indicate an underlying condition like a thyroid problem or anemia.

Frequently asked questions

Can hair loss during pregnancy affect my baby?

Hair loss itself does not harm your baby. However, if there is an underlying cause, like anemia or a thyroid imbalance, that can affect you and your baby’s health if left untreated. That’s why it’s important to mention any concerning hair changes to your healthcare provider.

Will my hair grow back after pregnancy?

In most cases, yes. Pregnancy-related shedding is usually temporary and doesn’t leave permanent scarring on the hair follicles. Once hormone levels and nutrient stores stabilise, hair typically returns to its normal growth pattern within several months.

This guide breaks down what’s happening in your body, how much hair loss is typical, and the safest ways to support healthy hair during pregnancy.  Every pregnancy is different. Factors such as your hormone levels, nutritional status, stress, lifestyle, and underlying health conditions all influence how your hair grows and responds.

Many hair growth products and supplements are not recommended during pregnancy or while breastfeeding. Always check with your healthcare provider before using any topical products or starting any new supplements.

{{pink-banner}}