Do you prescribe Propecia (finasteride) for hair loss?

Yes, we prescribe finasteride when it is the right fit, particularly for genetic male pattern hair loss. We often find that addressing underlying inflammation or nutrient gaps allows lower doses, or in some cases avoids the medication entirely. Finasteride is a 5-alpha reductase inhibitor that lowers DHT (a strong form of testosterone).

Is hair loss evaluation covered by insurance?

Hair loss evaluation at Fishtown Medicine is delivered through our membership model, which is HSA and FSA eligible. The advanced labs we order are typically billed to your PPO insurance, which covers most or all of the cost. We are transparent about what insurance does and does not pay for.

Do I have to come in person for a hair loss evaluation?

No, you do not have to come in person for a hair loss evaluation. Fishtown Medicine is a virtual-first practice that sees patients across Pennsylvania and many other states. We coordinate your labs at a local LabCorp or Quest near your home or office.

Can stress really cause hair loss?

Yes, stress can really cause hair loss. The condition is called telogen effluvium, where many hair follicles enter the resting phase at once after a shock to the system. The shedding usually shows up 2 to 3 months after the stressor, which is why the cause is often missed.

Does Minoxidil (Rogaine) actually work?

Yes, topical Minoxidil works for many patients with pattern hair loss, particularly when used consistently for 6 months or more. It widens blood vessels around the follicle and prolongs the growth phase. It works best alongside fixing the upstream driver, not as a stand-alone solution.

Can low iron cause hair loss without anemia?

Yes, low iron can cause hair loss without anemia. Ferritin (your iron storage protein) below 50 ng/mL often triggers shedding even when your hemoglobin is normal. We aim for ferritin above 50 ng/mL in most adults and above 75 ng/mL in menstruating women with hair loss.

How long does it take to see regrowth?

Most patients see shedding slow within 4 to 8 weeks of correcting the root cause. Visible regrowth usually shows up at 3 to 6 months because the hair cycle is slow. Patience is part of the protocol.

Is hair loss after COVID-19 normal?

Yes, hair loss after COVID-19 is common and follows the telogen effluvium pattern. The shedding peaks 2 to 3 months after the infection and usually resolves within 6 to 12 months. We support recovery with iron, protein, and sleep work, and we screen for thyroid changes.

Can pregnancy or postpartum changes cause hair loss?

Yes, postpartum hair loss is extremely common and usually peaks around 3 to 4 months after delivery. Estrogen levels drop sharply after birth, which pushes many follicles into the rest phase at once. Most cases self-resolve by 12 months postpartum, but iron, thyroid, and B12 should still be checked.

Will going on or off birth control affect my hair?

Yes, starting or stopping hormonal birth control can change hair growth. Some pills with anti-androgen progestins (like drospirenone in Yaz) tend to be hair-friendly, while others can drive shedding in sensitive patients. We coordinate with your prescriber if a switch makes sense.

Can GLP-1 medications like Ozempic or Wegovy cause hair loss?

Yes, GLP-1 medications can cause hair loss, mostly through rapid weight loss rather than the drug itself. The pattern looks like classic telogen effluvium that shows up a few months into treatment. We protect against this with adequate protein, slower titration, and full nutrient labs.

Is finasteride safe for women?

Finasteride is generally not first-line for women of childbearing age because of fetal risk. We sometimes use spironolactone, an anti-androgen blood pressure medication, instead. Topical anti-androgen formulations are also an option in select patients.

What about PRP (platelet-rich plasma) injections?

PRP, or platelet-rich plasma injections, can help in pattern hair loss by stimulating the follicle environment. The data is mixed but promising for selected patients. PRP works better when the underlying systemic drivers are corrected first, not as a stand-alone fix.

Are minerals like zinc and selenium worth supplementing?

Zinc and selenium are worth supplementing only if your labs show low levels or if your diet is low in seafood, nuts, and red meat. Both are required for thyroid hormone conversion and follicle health. Too much can cause its own problems, so we test before we treat.

Can autoimmune disease cause hair loss?

Yes, autoimmune disease can cause hair loss. Hashimoto's thyroiditis (an autoimmune attack on the thyroid), alopecia areata (patchy autoimmune hair loss), and lupus can all show up first as shedding. We screen with thyroid antibodies, ANA (antinuclear antibody), and a careful skin exam.

Does scalp inflammation play a role?

Yes, scalp inflammation plays a real role in hair loss. Conditions like seborrheic dermatitis or scalp psoriasis create an inflamed environment that follicles cannot thrive in. Medicated shampoos and topical anti-inflammatories often improve regrowth. Our dandruff and seborrheic dermatitis guide walks through the shampoo ladder and when flaking needs a closer look.

What is the role of saw palmetto and other supplements?

Saw palmetto is a plant extract with mild 5-alpha reductase blocking activity, similar to a weaker version of finasteride. The evidence is modest but reasonable for early pattern hair loss. We use it selectively, particularly for patients who want to avoid prescription anti-androgens.

Can a low-protein or vegan diet cause hair loss?

Yes, a low-protein diet can absolutely cause hair loss because hair is mostly keratin (a protein). Vegan and vegetarian diets work well when planned, but they can leave gaps in B12, iron, zinc, and total protein. We test rather than guess.

Will hair regrow once shedding stops?

Yes, hair will usually regrow once the upstream driver is corrected and shedding stops. New growth shows up as short, fine baby hairs at the part line within 3 to 6 months. Genetic pattern hair loss is more stubborn and often needs Minoxidil or anti-androgens to push regrowth.

How does perimenopause affect hair?

Perimenopause (the years leading up to menopause) drops estrogen and progesterone, which changes the androgen balance and often thins hair at the temples and part. We test full hormones and consider bio-identical progesterone or topical minoxidil based on the picture.

Is frequent hair coloring or heat styling a real driver?

Frequent harsh styling can fracture the hair shaft and look like loss, but it does not usually shrink follicles. The real test is whether you see thinning at the scalp itself, not just frayed ends. We address both, but we do not blame your stylist when the real cause is metabolic.

Do you prescribe Propecia (finasteride) for hair loss?

Yes, we prescribe finasteride when it is the right fit, particularly for genetic male pattern hair loss. We often find that addressing underlying inflammation or nutrient gaps allows lower doses, or in some cases avoids the medication entirely. Finasteride is a 5-alpha reductase inhibitor that lowers DHT (a strong form of testosterone).

Is hair loss evaluation covered by insurance?

Hair loss evaluation at Fishtown Medicine is delivered through our membership model, which is HSA and FSA eligible. The advanced labs we order are typically billed to your PPO insurance, which covers most or all of the cost. We are transparent about what insurance does and does not pay for.

Do I have to come in person for a hair loss evaluation?

No, you do not have to come in person for a hair loss evaluation. Fishtown Medicine is a virtual-first practice that sees patients across Pennsylvania and many other states. We coordinate your labs at a local LabCorp or Quest near your home or office.

Can stress really cause hair loss?

Yes, stress can really cause hair loss. The condition is called telogen effluvium, where many hair follicles enter the resting phase at once after a shock to the system. The shedding usually shows up 2 to 3 months after the stressor, which is why the cause is often missed.

Does Minoxidil (Rogaine) actually work?

Yes, topical Minoxidil works for many patients with pattern hair loss, particularly when used consistently for 6 months or more. It widens blood vessels around the follicle and prolongs the growth phase. It works best alongside fixing the upstream driver, not as a stand-alone solution.

Can low iron cause hair loss without anemia?

Yes, low iron can cause hair loss without anemia. Ferritin (your iron storage protein) below 50 ng/mL often triggers shedding even when your hemoglobin is normal. We aim for ferritin above 50 ng/mL in most adults and above 75 ng/mL in menstruating women with hair loss.

How long does it take to see regrowth?

Most patients see shedding slow within 4 to 8 weeks of correcting the root cause. Visible regrowth usually shows up at 3 to 6 months because the hair cycle is slow. Patience is part of the protocol.

Is hair loss after COVID-19 normal?

Yes, hair loss after COVID-19 is common and follows the telogen effluvium pattern. The shedding peaks 2 to 3 months after the infection and usually resolves within 6 to 12 months. We support recovery with iron, protein, and sleep work, and we screen for thyroid changes.

Can pregnancy or postpartum changes cause hair loss?

Yes, postpartum hair loss is extremely common and usually peaks around 3 to 4 months after delivery. Estrogen levels drop sharply after birth, which pushes many follicles into the rest phase at once. Most cases self-resolve by 12 months postpartum, but iron, thyroid, and B12 should still be checked.

Will going on or off birth control affect my hair?

Yes, starting or stopping hormonal birth control can change hair growth. Some pills with anti-androgen progestins (like drospirenone in Yaz) tend to be hair-friendly, while others can drive shedding in sensitive patients. We coordinate with your prescriber if a switch makes sense.

Can GLP-1 medications like Ozempic or Wegovy cause hair loss?

Yes, GLP-1 medications can cause hair loss, mostly through rapid weight loss rather than the drug itself. The pattern looks like classic telogen effluvium that shows up a few months into treatment. We protect against this with adequate protein, slower titration, and full nutrient labs.

Is finasteride safe for women?

Finasteride is generally not first-line for women of childbearing age because of fetal risk. We sometimes use spironolactone, an anti-androgen blood pressure medication, instead. Topical anti-androgen formulations are also an option in select patients.

What about PRP (platelet-rich plasma) injections?

PRP, or platelet-rich plasma injections, can help in pattern hair loss by stimulating the follicle environment. The data is mixed but promising for selected patients. PRP works better when the underlying systemic drivers are corrected first, not as a stand-alone fix.

Are minerals like zinc and selenium worth supplementing?

Zinc and selenium are worth supplementing only if your labs show low levels or if your diet is low in seafood, nuts, and red meat. Both are required for thyroid hormone conversion and follicle health. Too much can cause its own problems, so we test before we treat.

Can autoimmune disease cause hair loss?

Yes, autoimmune disease can cause hair loss. Hashimoto's thyroiditis (an autoimmune attack on the thyroid), alopecia areata (patchy autoimmune hair loss), and lupus can all show up first as shedding. We screen with thyroid antibodies, ANA (antinuclear antibody), and a careful skin exam.

Does scalp inflammation play a role?

Yes, scalp inflammation plays a real role in hair loss. Conditions like seborrheic dermatitis or scalp psoriasis create an inflamed environment that follicles cannot thrive in. Medicated shampoos and topical anti-inflammatories often improve regrowth. Our dandruff and seborrheic dermatitis guide walks through the shampoo ladder and when flaking needs a closer look.

What is the role of saw palmetto and other supplements?

Saw palmetto is a plant extract with mild 5-alpha reductase blocking activity, similar to a weaker version of finasteride. The evidence is modest but reasonable for early pattern hair loss. We use it selectively, particularly for patients who want to avoid prescription anti-androgens.

Can a low-protein or vegan diet cause hair loss?

Yes, a low-protein diet can absolutely cause hair loss because hair is mostly keratin (a protein). Vegan and vegetarian diets work well when planned, but they can leave gaps in B12, iron, zinc, and total protein. We test rather than guess.

Will hair regrow once shedding stops?

Yes, hair will usually regrow once the upstream driver is corrected and shedding stops. New growth shows up as short, fine baby hairs at the part line within 3 to 6 months. Genetic pattern hair loss is more stubborn and often needs Minoxidil or anti-androgens to push regrowth.

How does perimenopause affect hair?

Perimenopause (the years leading up to menopause) drops estrogen and progesterone, which changes the androgen balance and often thins hair at the temples and part. We test full hormones and consider bio-identical progesterone or topical minoxidil based on the picture.

Is frequent hair coloring or heat styling a real driver?

Frequent harsh styling can fracture the hair shaft and look like loss, but it does not usually shrink follicles. The real test is whether you see thinning at the scalp itself, not just frayed ends. We address both, but we do not blame your stylist when the real cause is metabolic.

Hair Loss Evaluation in Philadelphia | Dr. Ash

TL;DR30-second take

Hair loss is rarely about hair alone. It is usually a signal from a stressed system. We test thyroid, ferritin, vitamin D, fasting insulin, and sex hormones, then treat the upstream driver. Most patients see shedding slow within 3 to 6 months once the root cause is corrected.

You wake up, glance at the pillow, and see more strands than usual. Or you notice the shower drain telling a story you do not want to hear. For many people in Philly, the first reaction is a quiet panic, followed by a late-night search for a new shampoo or supplement.

Here is the detail that gets missed in most clinics: hair is high-metabolic-demand tissue. It is one of the most energy-expensive tissues to maintain. When your body is under pressure from a demanding job at the Navy Yard, sleepless nights in a new rowhome, or hidden inflammation, hair is one of the first luxuries the body cuts from the budget.

"Hair loss is rarely just about the hair. It is a biological check-engine light that points to your thyroid, your iron stores, or your stress hormones."

Why Is My Hair Falling Out?

Your hair is falling out because something upstream has changed. Hair follicles cycle through growth (anagen), transition (catagen), and rest (telogen) phases. Stress on the system pushes more follicles into the rest phase at once, which shows up as shedding 2 to 3 months later.

Common upstream drivers include:

Thyroid dysfunction. Even a subclinical low thyroid (TSH above 2.0 with low free T3) can trigger diffuse shedding. The active hormone is T3, not TSH.
Low ferritin. Ferritin is your iron storage protein. Below 50 ng/mL, follicles often slow down, even when your hemoglobin is normal.
Vitamin D and zinc gaps. Both are critical cofactors for the follicles growth phase.
Insulin resistance. High blood sugar swings (think a Wawa hoagie and a Philly pretzel) push androgen production up, which accelerates pattern thinning in genetically prone scalps.
Telogen effluvium. A reactive whole-scalp shedding triggered by acute illness, COVID-19, surgery, pregnancy, rapid weight loss, or major emotional stress.

What Does a Standard Hair Loss Visit Miss?

A standard hair loss visit usually misses the upstream drivers. A 10-minute appointment at a dermatology clinic or hair restoration center often ends with a Minoxidil or finasteride prescription and very little testing. These tools have a place, but they are band-aids if the underlying cause is thyroid, iron, or stress.

We respect the complexity of your biology. We treat the system, not just the symptom.

What Is the Fishtown Framework for Hair Loss?

The Fishtown framework for hair loss connects your scalp to the rest of your physiology. Hair growth lives downstream of your GER·O·SPAN: nourish, restore, move, measure, and connect.

1. Nourish (Input Biology)

Many of our busy patients, from nurses at Penn to chefs in East Passyunk, are unknowingly under-eating protein and key micronutrients. The body cannot grow new hair when it is in a catabolic state (a state of breakdown rather than building).

Aim for 1.2 to 1.6 grams of protein per kilogram of body weight per day.
Eat iron-rich foods (red meat, lentils, spinach) and pair plant iron with vitamin C for absorption.

2. Restore (Sleep and Stress)

Chronic cortisol elevation from the always-on grind tells the body to conserve energy. Hair growth is one of the first programs the body shuts down. We work on sleep architecture and stress load to switch off the survival signal.

3. Measure (Deep Diagnostics)

We do not guess. The labs we typically run include:

Full thyroid panel. TSH, free T3, free T4, reverse T3, and thyroid antibodies (anti-TPO and anti-thyroglobulin).
Metabolic markers. Fasting insulin, hemoglobin A1c, and fasting glucose.
Micronutrients. Ferritin, B12, folate, vitamin D, and zinc.
Hormones. DHEA-S, total and free testosterone, estradiol, progesterone, and SHBG (sex hormone binding globulin).

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When Should I See a Doctor for Hair Loss?

You should see a doctor for hair loss when shedding lasts more than 8 weeks, when the part visibly widens, or when other symptoms come along for the ride. Some shedding is normal (50 to 100 hairs per day), but the patterns below deserve a real workup.

Rapid shedding over the course of a few weeks.
A visibly wider part or thinning at the crown.
Heavy periods, fatigue, cold intolerance, or brittle nails alongside the shedding.
Eyebrow thinning at the outer third, which is a classic thyroid sign.

If you are tired of guessing and want a partner who will look upstream, book a diagnostic with us.

Actionable Steps in Philly

A practical plan for hair shedding.

Get a full thyroid and iron panel. Not just TSH and CBC. Ask for free T3, free T4, reverse T3, ferritin, and full iron studies.
Front-load protein. Aim for 30 grams of protein at breakfast and 1.2 to 1.6 grams per kilogram of body weight per day.
Sleep 7 to 9 hours. Hair grows during deep sleep. A wearable like an Oura ring can show you the gap.
Audit medications and crash diets. Recent ozempic, low-calorie diets, hormonal birth control changes, or a pregnancy in the past 6 months can all trigger shedding. Bring the timeline.
Be patient. Even when we fix the driver, regrowth shows up 3 to 6 months later because of the hair cycle.

Key Takeaways

Hair is a luxury system. Your body only grows hair when it feels safe and well fed.
Labs matter. Standard reference ranges are often too wide for optimal hair growth. We look for optimal, not just normal.
System over symptom. Treating the thyroid, iron, or stress level often resolves shedding without lifelong medication.
Local stressors are real. City living calls for intentional recovery strategies to protect metabolic health.

Scientific References

Almohanna HM, et al. "The role of vitamins and minerals in hair loss." Dermatology and Therapy. 2019.
Trost LB, et al. "The diagnosis and treatment of iron deficiency and its potential relationship to hair loss." Journal of the American Academy of Dermatology. 2006.
Hughes EC, Saleh D. "Telogen Effluvium." StatPearls. 2023.
Olsen EA, et al. "Female pattern hair loss: clinical features and treatment." Journal of the American Academy of Dermatology. 2017.
Vincent M, Yogiraj K. "A descriptive study of alopecia patterns and their relation to thyroid dysfunction." International Journal of Trichology. 2013.

Acne - adult acne and the hormonal and metabolic inputs we test for
Dandruff & Seborrheic Dermatitis - what works beyond the OTC shampoo aisle
Premature Gray Hair - the nutritional and metabolic causes worth checking
Hair Loss in Men - androgenetic alopecia and the treatment paths that actually work
Hair Loss in Women - the broader differential for hair loss in women (iron, thyroid, hormonal)
Eyelash Health - when sparse lashes signal an underlying systemic issue

Ashvin Vijayakumar MD (Dr. Ash) is a board-certified internal medicine physician who treats hair loss as a metabolic signal, not just a cosmetic concern. At Fishtown Medicine, he helps Philadelphia patients find and reverse the root causes of shedding for sustainable regrowth.

Fishtown Medicine | Symptoms

2418 E York St, Philadelphia, PA 19125(267) 360-7927 hello@fishtownmedicine.comHSA/FSA Eligible

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