What Causes Hair Loss in Women? The Complete Guide to Female Hair Thinning

Published by HairXT | Natural Hair Growth Since 2011

 

If you're a woman dealing with hair loss, you're not alone. And you're not imagining it.

By age 50, half of all women will experience some degree of pattern hair loss. Forty percent of all people experiencing hair loss are female. Yet for years, women's hair loss has been dismissed as a cosmetic concern, something you just have to accept as part of aging.

That's not true.

Since 2011, HairXT has been helping women combat hair loss naturally. We've been on grocery store shelves since 2013 because our approach works: we address the root causes of hair loss with clinically-studied natural ingredients, not pharmaceutical drugs with unwanted side effects.

Whether your hair is thinning due to hormones, thyroid issues, nutritional deficiencies, or stress, understanding what's causing it is the first step to stopping it.

Let's answer the questions you're really asking.

 

 

What Is the Biggest Reason for Female Hair Loss?

The single biggest cause of hair loss in women is the same as in men: androgenetic alopecia (AGA), also known as female pattern hair loss.

This affects approximately 40% of women by age 50 and is driven by the hormone DHT (dihydrotestosterone).

How DHT Causes Hair Loss in Women

Here's what's happening inside your scalp right now:

Each hair follicle has a blood vessel attached to it. Nutrients and hormones travel through your bloodstream to that follicle. When DHT reaches the follicle, it binds to receptors and essentially starves the hair shaft, shrinking it over time.

The technical term for this is "follicle miniaturization."

In a healthy follicle, hair grows for 5-7 years before entering a resting phase and falling out. But when DHT attacks the follicle:

  • The growth phase shortens from 5-7 years to just 1-3 years

  • Hair grows back thinner and weaker with each cycle

  • Eventually, the follicle produces only fine, colorless "vellus" hair (like peach fuzz)

  • In severe cases, the follicle stops producing hair altogether

Why Women Are Affected Differently Than Men

Men with androgenetic alopecia typically lose hair in a predictable pattern: receding hairline and crown thinning. Women usually experience diffuse thinning all over the scalp, with the most noticeable loss at the part line and crown.

Why the difference? Estrogen.

Estrogen provides some protection against DHT. It:

  • Keeps more hair follicles in the growth phase longer

  • Reduces the impact of DHT on follicles

  • Supports overall hair density

But as estrogen levels decline (during perimenopause, menopause, or due to conditions like PCOS), that protective effect weakens. DHT's impact becomes more pronounced, and hair loss accelerates.

Other Hormonal Triggers for Female Hair Loss

Pregnancy and Postpartum: During pregnancy, high estrogen levels keep more hair in the growth phase. After delivery, estrogen drops rapidly and all that hair enters the resting phase at once. The result is dramatic shedding 2-4 months postpartum.

Menopause: Declining estrogen and progesterone combined with stable or relatively higher androgen levels create a perfect storm for hair loss.

PCOS (Polycystic Ovary Syndrome): Women with PCOS often have higher-than-normal testosterone levels, which means more DHT production and accelerated hair loss.

Thyroid Disorders: Both hypothyroidism (underactive thyroid) and hyperthyroidism (overactive thyroid) can disrupt the hair growth cycle. Thyroid hormones are essential for regulating how long hair stays in the growth phase.

The Bottom Line

If you're experiencing diffuse thinning all over your scalp, especially at the part line and crown, DHT is likely the primary culprit — even if you don't have a family history of baldness and even if you're still decades away from menopause.

 

 

What Illnesses Can Cause Your Hair to Fall Out?

Hair loss can be a symptom of several underlying medical conditions. If you're experiencing sudden or severe hair loss, it's important to see a doctor to rule out these conditions:

1. Thyroid Disorders

Hypothyroidism (Underactive Thyroid): When your thyroid doesn't produce enough thyroid hormones (T3 and T4), your hair growth cycle slows down. Hair becomes dry, brittle, and thin. You may also experience:

  • Fatigue

  • Weight gain

  • Cold sensitivity

  • Dry skin

  • Depression

Hyperthyroidism (Overactive Thyroid): When your thyroid produces too much hormone, hair growth accelerates but the hair shaft is weak and fine. Hair falls out more easily. You may also experience:

  • Weight loss

  • Rapid heartbeat

  • Anxiety

  • Heat sensitivity

  • Trembling hands

What to do: If you suspect thyroid issues, ask your doctor for a full thyroid panel (TSH, Free T3, Free T4, and thyroid antibodies). Treatment of the underlying thyroid condition often restores normal hair growth.

2. Autoimmune Conditions

Alopecia Areata: Your immune system attacks hair follicles as if they were foreign invaders, causing hair to fall out in round patches. This can progress to total scalp hair loss (alopecia totalis) or total body hair loss (alopecia universalis).

Lupus (Systemic Lupus Erythematosus): Lupus can cause two types of hair loss:

  • Diffuse thinning across the scalp (usually temporary)

  • Discoid lupus which causes scarring and permanent hair loss in affected areas

Hashimoto's Thyroiditis: This autoimmune condition attacks the thyroid gland and is the most common cause of hypothyroidism in the United States. Hair loss is a common symptom.

What to do: These conditions require medical diagnosis and treatment. However, supporting your hair follicles with proper nutrition can help minimize hair loss even while managing the underlying condition.

3. Polycystic Ovary Syndrome (PCOS)

PCOS affects 1 in 10 women of reproductive age and causes:

  • Elevated androgens (male hormones including testosterone)

  • Insulin resistance

  • Irregular periods

  • Ovarian cysts

The elevated androgens lead to increased DHT production, which causes hair loss on the scalp while paradoxically causing unwanted hair growth on the face, chest, and back (hirsutism).

What to do: PCOS is typically managed with a combination of lifestyle changes (diet, exercise), medications (metformin, birth control), and sometimes anti-androgen drugs. Natural DHT blockers like Saw Palmetto can also help reduce the impact of elevated androgens on hair follicles.

4. Iron Deficiency Anemia

Iron deficiency is one of the most common nutritional deficiencies in women, especially those who:

  • Have heavy menstrual periods

  • Are pregnant or postpartum

  • Follow vegetarian or vegan diets (plant-based iron is harder to absorb than animal-based iron)

  • Have digestive conditions that impair nutrient absorption

Iron is essential for producing hemoglobin, which carries oxygen to cells including hair follicles. Without adequate iron, follicles can't produce strong, healthy hair.

What to do: Ask your doctor to check your ferritin levels (iron stores), not just hemoglobin. Ferritin should be at least 40-50 ng/mL for optimal hair growth, even though the "normal" range is much lower.

5. Scalp Infections and Dermatological Conditions

Seborrheic Dermatitis: Causes inflammation, flaking, and itching. If severe, it can damage follicles.

Psoriasis: Scalp psoriasis can cause thick, scaly patches that interfere with normal hair growth.

Fungal Infections (Tinea Capitis): Ringworm of the scalp can cause patchy hair loss with scaling and inflammation.

What to do: These conditions require treatment from a dermatologist. Antifungal medications, medicated shampoos, or topical steroids may be needed.

6. Eating Disorders and Rapid Weight Loss

Anorexia, bulimia, and crash dieting cause rapid, severe hair loss because:

  • The body is deprived of protein, vitamins, and minerals needed for hair growth

  • Rapid weight loss triggers physiological stress that pushes hair into the resting phase

  • Hormonal disruptions from malnutrition affect the hair growth cycle

What to do: If you suspect an eating disorder, please seek help from a medical professional or therapist. Hair will typically regrow once adequate nutrition is restored.

7. Medications and Medical Treatments

Several medications can cause hair loss as a side effect:

  • Chemotherapy drugs (target rapidly dividing cells, including hair follicles)

  • Hormone therapies for breast cancer (like anastrozole, which we covered in our scalp serum post)

  • Antidepressants (some SSRIs)

  • Beta-blockers (for high blood pressure)

  • Anticoagulants (blood thinners)

  • Retinoids (high doses of Vitamin A)

What to do: Never stop a prescribed medication without consulting your doctor. Discuss alternatives if hair loss is severe.

 

 

What Is My Body Lacking If My Hair Is Falling Out?

Hair loss is often a visible sign of nutritional deficiency. Your body prioritizes nutrients for essential organs (heart, brain, kidneys), and hair follicles are at the bottom of the priority list. When you're deficient in key nutrients, hair is one of the first things to suffer.

The Critical Nutrients for Hair Growth

Here are the most common deficiencies that lead to hair loss — and what to do about them:

1. Iron

Why it matters: Iron carries oxygen to hair follicles through hemoglobin in red blood cells. Without adequate oxygen, follicles can't produce strong, healthy hair.

Deficiency symptoms:

  • Fatigue and weakness

  • Pale skin

  • Brittle nails

  • Cold hands and feet

  • Hair loss and thinning

Food sources:

  • Red meat, chicken, fish (heme iron — best absorbed)

  • Spinach, lentils, beans, tofu (non-heme iron — harder to absorb)

  • Pair plant-based iron with Vitamin C to improve absorption

HairXT contains: Iron in our Hair Growth Vitamins to support oxygen delivery to follicles.

2. Biotin (Vitamin B7)

Why it matters: Biotin is essential for producing keratin, the protein that makes up your hair. A Harvard study identified biotin as one of the most important nutrients for preserving hair strength, texture, and function.

Deficiency symptoms:

  • Thinning hair

  • Brittle nails

  • Dry, scaly skin

  • Fatigue

Food sources:

  • Eggs (especially yolks)

  • Nuts and seeds

  • Sweet potatoes

  • Salmon

HairXT contains: Biotin in both our Hair Growth Vitamins and Hair Growth Serum for internal and external support.

3. B Complex Vitamins

Why they matter:

  • B1 (Thiamin), B2 (Riboflavin), B6, B12: Support red blood cell formation, which delivers oxygen and nutrients to follicles

  • Niacin (B3): Improves scalp circulation

  • Folic Acid (B9): Essential for cell division and growth (hair follicle cells divide rapidly)

  • Pantothenic Acid (B5): Supports adrenal function and stress response

Deficiency symptoms:

  • Hair loss and premature graying

  • Fatigue

  • Weakness

  • Neurological symptoms (B12 deficiency)

Food sources:

  • Meat, fish, eggs (B12 is only found in animal products)

  • Whole grains, legumes

  • Leafy greens (folate)

HairXT contains: Full B Complex in our Hair Growth Vitamins, including B1, B2, B6, B12, Niacin, Folic Acid, and Pantothenic Acid.

4. Vitamin D

Why it matters: Vitamin D receptors are found in hair follicles. Low Vitamin D is associated with alopecia areata and female pattern hair loss.

Deficiency symptoms:

  • Hair loss

  • Fatigue

  • Bone pain

  • Depression

  • Weakened immune system

Food sources:

  • Fatty fish (salmon, mackerel)

  • Egg yolks

  • Fortified dairy and plant milks

  • Sunlight (10-30 minutes of sun exposure several times per week)

Note: Many people, especially those in northern climates or with darker skin, are deficient in Vitamin D and need supplementation.

5. Protein

Why it matters: Hair is made of keratin, which is a protein. If you're not getting enough protein in your diet, your body can't produce strong hair.

Deficiency symptoms:

  • Hair thinning and breakage

  • Slow hair growth

  • Muscle loss

  • Fatigue

  • Slow wound healing

Food sources:

  • Lean meats, poultry, fish

  • Eggs and dairy

  • Beans, lentils, tofu, tempeh

  • Quinoa

  • Nuts and seeds

Daily needs: Aim for at least 0.8 grams of protein per kilogram of body weight (minimum). Active individuals and those trying to regrow hair may need more.

6. Zinc

Why it matters: Zinc plays a role in hair tissue growth and repair. It also helps keep the oil glands around follicles functioning properly.

Deficiency symptoms:

  • Hair loss

  • Weakened immune system

  • Loss of taste or smell

  • Slow wound healing

Food sources:

  • Oysters and shellfish

  • Red meat and poultry

  • Beans, nuts, seeds

  • Whole grains

Caution: Too much zinc can actually cause hair loss. Don't mega-dose without testing your levels first.

7. Essential Fatty Acids (Omega-3s)

Why they matter: Omega-3 fatty acids reduce inflammation and support scalp health. They also help your body absorb fat-soluble vitamins (A, D, E, K) that are important for hair growth.

Deficiency symptoms:

  • Dry, flaky scalp

  • Dull, brittle hair

  • Inflammation

  • Poor wound healing

Food sources:

  • Fatty fish (salmon, sardines, mackerel)

  • Flaxseeds and chia seeds

  • Walnuts

  • Algae-based supplements (for vegans)

8. Vitamin E

Why it matters: Vitamin E is a powerful antioxidant that protects hair follicles from oxidative stress caused by free radicals.

Deficiency symptoms:

  • Hair loss

  • Dry, damaged hair

  • Weakened immune system

Food sources:

  • Nuts and seeds (especially sunflower seeds and almonds)

  • Spinach and broccoli

  • Avocado

HairXT contains: Vitamin E in both our Hair Growth Vitamins and Hair Growth Serum for comprehensive antioxidant protection.

 

 

How Do I Stop My Hair from Falling Out as a Female?

This is the question you really want answered. And the truth is: it depends on what's causing your hair loss.

But regardless of the cause, there are proven steps you can take right now to slow hair loss and support regrowth.

Step 1: Identify the Root Cause

See your doctor and get tested for:

  • Thyroid function (TSH, Free T3, Free T4, thyroid antibodies)

  • Iron levels (ferritin, serum iron, TIBC)

  • Vitamin D

  • Hormone levels (testosterone, DHEA-S if PCOS is suspected)

  • Blood sugar (if insulin resistance or diabetes is suspected)

Why this matters: You can't fix what you don't understand. If you have an underlying medical condition, treating it is the foundation for everything else.

Step 2: Address Nutritional Deficiencies

Even if your blood tests come back "normal," you may not be optimal for hair growth.

For example:

  • Ferritin "normal" range is 12-150 ng/mL, but hair growth experts recommend at least 40-50 ng/mL

  • Vitamin D "normal" is 30+ ng/mL, but many functional medicine doctors recommend 50-80 ng/mL for optimal health

What to do:

  • Eat a nutrient-dense diet rich in protein, healthy fats, and vegetables

  • Consider supplementation if diet alone isn't enough

  • Focus on the nutrients listed above (iron, biotin, B vitamins, Vitamin D, protein, zinc, omega-3s)

HairXT Hair Growth Vitamins provide: All of the essential vitamins, minerals, and nutrients your follicles need in optimal doses. Two tablets daily deliver comprehensive nutritional support for hair growth.

Step 3: Block DHT Naturally

Even if hormones aren't your primary issue, blocking DHT can prevent additional follicle miniaturization while you address other causes.

Natural DHT blockers include:

  • Saw Palmetto: Inhibits 5-alpha reductase (the enzyme that converts testosterone to DHT). Studies show 38% increase in hair growth over 24 weeks.

  • Pygeum Africanum: Works synergistically with Saw Palmetto to regulate DHT

  • Green Tea Extract: Blocks DHT receptors at the follicle level

  • Pumpkin Seed Oil: Shown in studies to increase hair count in men with androgenetic alopecia

HairXT provides DHT blocking through:

  • Hair Growth Vitamins: Saw Palmetto and Pygeum Africanum work from the inside

  • Hair Growth Serum: Saw Palmetto, Green Tea Extract, and Rosemary Extract work topically on the scalp

Step 4: Stimulate Blood Flow to the Scalp

Hair follicles need oxygen and nutrients delivered through blood flow. Poor circulation means follicles can't access what they need to grow.

How to improve scalp circulation:

  • Scalp massage: 5-10 minutes daily stimulates blood flow

  • Exercise: Regular cardiovascular exercise improves circulation throughout the body

  • Topical circulation boosters: Ingredients like capsaicin, ginseng, ginkgo biloba, and peppermint oil

HairXT Hair Growth Serum contains:

  • Capsaicin (stimulates blood flow)

  • Methyl Nicotinate (vasodilator)

  • Ginseng and Ginkgo Biloba (improve microcirculation)

  • Peppermint Oil (stimulates follicles)

Apply once daily and massage into scalp for 30-60 seconds to maximize circulation benefits.

Step 5: Protect and Nourish Follicles

Damaged, stressed follicles produce weak, brittle hair. Supporting follicle health with antioxidants and proteins strengthens hair from the inside out.

What follicles need:

  • Antioxidants (Vitamins C, E, Green Tea Extract) to fight free radical damage

  • Proteins (Keratin, Wheat Protein) to rebuild hair structure

  • Peptides (Biotinoyl Tripeptide-1) to stimulate growth at the cellular level

  • Anti-inflammatory ingredients (Aloe Vera, Niacinamide, Gotu Kola) to reduce scalp inflammation

HairXT provides comprehensive follicle support through:

  • Hair Growth Vitamins: Vitamins C and E, B Complex, antioxidants

  • Hair Growth Serum: Hydrolyzed Keratin, Biotinoyl Tripeptide-1, Aloe Vera, Niacinamide, botanical extracts

Step 6: Be Gentle with Your Hair

While you're working to regrow hair, don't sabotage your efforts with harsh treatment:

Do:

  • Wash hair 2-4 times per week with sulfate-free shampoo

  • Use a wide-tooth comb on wet hair

  • Massage scalp gently when shampooing

  • Let hair air-dry when possible

  • Sleep on satin pillowcases

Don't:

  • Pull hair back tightly (causes traction alopecia)

  • Use high heat styling tools daily

  • Brush wet hair aggressively

  • Use harsh chemical treatments (bleach, relaxers)

  • Wear dirty hats or caps (traps bacteria and DHT on scalp)

Step 7: Give It Time (And Be Consistent)

This is the hardest part: hair growth takes time.

Hair grows in cycles, and those cycles are measured in months, not weeks. Here's what to expect:

30 days: Less shedding, healthier scalp

60 days: New growth starts appearing (baby hairs at hairline)

90+ days: Visible improvement in density and thickness

6 months: Significant results for most women

Why 90 days minimum?

  • Hair grows about half an inch per month

  • Follicles that were in the resting phase need time to re-enter the growth phase

  • It takes time to replenish nutrient stores if you were deficient

  • DHT blocking effects accumulate over time

This is why we recommend subscribing to HairXT. Hair growth isn't a one-month fix. It's a commitment. When you subscribe, you're locking in 10% savings and ensuring you have consistent supply for the 90+ days you need to see real results.

 

 

The HairXT Triple Advantage Approach

Most hair loss solutions attack one problem and ignore the others. That's why they fail.

HairXT was built around a comprehensive approach we call the Triple Advantage:

1. NOURISH

Feed your follicles the vitamins and minerals they need to produce keratin and support healthy growth.

Hair Growth Vitamins deliver:

  • B Complex (B1, B2, B6, B12, Niacin, Folic Acid, Pantothenic Acid)

  • Biotin

  • Iron

  • Vitamins A, C, E

  • Trace minerals (Copper, Magnesium, Selenium)

2. PROTECT

Fight environmental stressors, free radicals, and oxidative damage that weaken hair structure.

Hair Growth Vitamins and Serum provide:

  • Antioxidants (Vitamins C and E, Green Tea Extract)

  • Anti-inflammatory ingredients (Aloe Vera, Niacinamide, Gotu Kola)

  • Scalp-soothing botanicals (Rosemary, Green Tea, Gotu Kola)

3. PREVENT

Block DHT from shrinking follicles and shortening the growth phase.

Hair Growth Vitamins and Serum contain:

  • Saw Palmetto (inhibits 5-alpha reductase)

  • Pygeum Africanum (regulates DHT)

  • Green Tea Extract (blocks DHT receptors)

  • Rosemary Extract (shown to be as effective as 2% minoxidil)

When you combine all three, you're not just treating symptoms. You're restoring your hair's natural growth cycle.

 

 

Why HairXT Works When Others Don't

We've been doing this since 2011. We've been on grocery store shelves since 2013 with consistent year-over-year growth. Brands that don't work don't last a decade in retail.

We're not a pharmaceutical company. We don't sell you on drug-based solutions with side effects and dependencies. We support your body's natural processes with clinically-studied ingredients.

We're woman-owned and family-operated. Our founder, Tara Mancine, studied with leading natural beauty experts in France and worked for top luxury hair manufacturers before creating HairXT. She built this company to give women a natural alternative to drugs - and it shows in every product we make.

We use optimal doses, not window dressing. When we include an ingredient, it's at a concentration that actually works, not just enough to put it on the label.

We attack hair loss from multiple angles. DHT blocking + circulation + nourishment + antioxidant protection. We cover all the bases.

 

 

Real Women, Real Results

We've helped countless women regrow their hair naturally:

  • Women with androgenetic alopecia who were told "just accept it"

  • Women with thyroid conditions (Hashimoto's, hypothyroidism)

  • Women with PCOS struggling with hormonal hair loss

  • Women post-pregnancy dealing with excessive shedding

  • Women in menopause experiencing accelerated thinning

  • Women recovering from cancer treatment

  • Women with nutritional deficiencies

You don't have to accept hair loss as inevitable.

 

 

Ready to Stop Hair Loss and Start Regrowing?

The HairXT Hair Growth Kit (vitamins + serum) gives you the complete inside-out approach:

✓ Hair Growth Vitamins (60 tablets, 30-day supply)

  • Take 2 daily with meals

  • Blocks DHT from within

  • Delivers 15 essential nutrients

  • Supports healthy growth from the inside

✓ Hair Growth Serum (2oz, 30-day supply)

  • Apply once daily to scalp

  • Delivers actives directly to follicles

  • Stimulates circulation

  • Blocks DHT topically

Subscribe and save:

  • 10% off every shipment (automatic)

  • Code HXT15 for additional 15% off first 3 months

  • Total savings: 25% off for 3 months

  • Free shipping on subscriptions

  • Cancel anytime

Pricing:

  • One-time purchase: $79.90

  • Subscribe: $71.91/month ($59.31/month for first 3 months with HXT15)

You save $61.77 over your first 3 months - exactly the timeline you need to see real results.

100% drug-free. No prescription needed. No side effects.

[GET MY HAIR GROWTH KIT - SAVE 25%] → [Link to product page]

 

 

Frequently Asked Questions

Q: How long until I see results? Most women see noticeable improvement by 90 days, with continued progress at 6 months. Remember: hair grows in cycles measured in months, not days.

Q: Can I use HairXT if I have a thyroid condition? Yes. HairXT doesn't interfere with thyroid medications. However, always consult with your doctor before starting any new supplement regimen.

Q: Will this work for menopausal hair loss? Yes. Menopausal hair loss is largely driven by declining estrogen and increased DHT activity. HairXT blocks DHT and nourishes follicles to support growth during this transition.

Q: I'm vegetarian/vegan. Is HairXT suitable for me? The vitamins contain some animal-derived ingredients (gelatin capsule). The serum is suitable for vegetarians and vegans. Check with us if you have specific dietary restrictions.

Q: Can I use HairXT with other hair loss treatments? Generally yes, but check with your doctor if you're using prescription medications like finasteride or minoxidil.

Q: What if it doesn't work for me? You can cancel your subscription anytime. We recommend giving it the full 90 days since that's how long hair growth cycles take.

 

 

The Bottom Line

Hair loss isn't just about vanity. It's about feeling like yourself. It's about confidence. It's about not being defined by something you didn't choose.

You don't have to accept thinning hair as inevitable. You don't have to rely on pharmaceutical drugs with side effects. And you don't have to spend thousands on treatments that don't work.

You need a solution that addresses the root causes: DHT, poor circulation, nutrient deficiency, and follicle damage.

That's exactly what HairXT provides.

Stop hair loss. Regrow and protect. Naturally.

Shop HairXT Now →

 

 

HairXT was founded in 2011 by Tara Mancine and has been helping women combat hair loss naturally ever since. All products are manufactured in GMP-certified facilities and are available online and at major retailers including H-E-B.

Medical Disclaimer: This article is for educational purposes only and is not intended as medical advice. If you're experiencing sudden or severe hair loss, please consult with a healthcare provider. HairXT products are not intended to diagnose, treat, cure, or prevent any disease.

Back to News