Hair Loss Explained: Common Causes and What to Look For

Q&A with Dabney Poorter, FNP-C, Certified Functional Medicine Provider

Hair thinning can feel discouraging and terrifying, especially when it seems to come out of nowhere. We sat down with Restore + Revive’s Founder and Certified Functional Medicine Provider, Dabney Poorter, FNP-C, to talk through the most common causes of hair loss and what you can do to support healthy hair growth from the inside out.

Question 1: If a client comes to you and is suddenly experiencing hair loss, what first comes to mind for you?

Dabney: Hair loss is usually a symptom of something deeper, so my first step is always to look for the “why.” Ideally we start with comprehensive testing, not just a surface-level check. The 4 main things I typically run labs to evaluate for are:

• Thyroid health: A full thyroid panel (not just TSH) helps identify if the thyroid is under- or over-functioning, which can directly affect hair growth. 

• Hormones: We look at sex hormones and patterns that may indicate PCOS, perimenopause, postmenopause, or autoimmune conditions like lupus.

• Chronic stress: Ongoing stress can lead to inflammation and lower hormone levels. I look at cortisol and DHT levels since both can influence hair loss.

• Nutrient levels: Deficiencies in iron, protein, and other key nutrients can disrupt the body’s ability to grow strong, healthy hair.

Q2: If blood panels look good, what are some other sneaky reasons somebody might still be experiencing hair loss?

Dabney: Sometimes, the answer lies in our genetics. If parents or close family members have experienced thinning or pattern hair loss, there can be a hereditary component. In those cases, I may recommend genetic testing to help determine whether certain gene patterns are at play, allowing us to build a comprehensive and customized plan to tackle accordingly. 

Q3: Are there any over-the-counter products you like to help maintain strong hair growth?

Dabney: Like I previously mentioned, I always like to look at the root cause of hair loss, which is typically something happening inside the body. However, external factors and products can be helpful in creating a healthy environment for strong hair growth.

I always remind clients to pay attention to water quality, especially if you live in an area with hard water, which can be harsh on the scalp and hair. Simple water filtration devices or shower heads can be extremely helpful.

I also love hair growth sprays that stimulate follicles without causing irritation. One of my favorites is from Rowe Casa, their hair spritz. It is gentle, natural, safe for most hair types, and it smells amazing!

Finally, using a clean, gentle shampoo can make a big difference. Some people use the same shampoo for years, and over time it may no longer agree with their scalp or hair. Innersense is my personal favorite. 

Q4: What are some “free” things people can do to support hair growth and discourage hair loss if testing isn’t something they want to do or can’t afford right now?

Dabney: There’s a lot you can do at home to support your hair and overall wellness:

• Lower stress and inflammation: Movement, mindfulness, and adequate sleep all make a huge difference. I know saying “lower your stress” is easier said than done (trust me!). But I have learned that striving to slow down, take time for a walk outside, getting in bed a few minutes earlier, praying/meditating, and saying “no” to activities that drain you can be hugely instrumental in lessening your daily stress. 

• Eat a balanced, nutrient-dense diet: Getting enough protein, healthy fats, and minerals is key. These foods and nutrients help your body naturally produce stronger hair that is less likely to break easily. 

• Stay hydrated and care for your scalp: Gentle scalp massage, clean water, hair spritz, and consistent washing with non-toxic products all help maintain a healthy foundation for hair growth.

Q5: I’ve heard people can lose hair after being sick, especially after COVID. Why does that happen? Can other illnesses cause it too?

Dabney: Yes, post-illness hair loss is actually very common, and we’ve seen it a lot in recent years. Essentially, when the body experiences something stressful, like a viral infection or high fever, it often shifts its resources toward healing vital organs and away from “non-essential” functions like hair growth.

This can lead to a condition called telogen effluvium, which causes more hair follicles to enter a resting phase. You’ll typically notice increased shedding about 2–3 months after the illness, once the body starts to reset.

However, it’s not just COVID, other viral infections, severe flu, or even surgery can trigger the same response. The good news is that this type of hair loss is usually temporary. Supporting recovery with good nutrition, stress management, and gentle scalp care can help encourage regrowth as the body rebalances.

Q6: When you say inflammation can cause hair loss, what exactly do you mean?

Dabney: Think of inflammation like your body being on “high alert.” It’s a natural response to injury or infection. For example, when you get a cut, the redness and swelling you see is inflammation helping you heal. But when inflammation sticks around all the time, it can start affecting other parts of your body, including your hair. Chronic inflammation can disrupt the normal hair growth cycle, causing follicles to stop producing hair or to shed prematurely.  Some common inflammation triggers include:

• Autoimmune conditions, like lupus or alopecia areata, where the immune system mistakenly attacks hair follicles.

• Diet and nutrient issues, not getting enough protein, iron, or other vitamins, which can increase internal stress.

• Chronic stress, which raises hormones like cortisol that promote inflammation and can affect hormone balance.

Q7: Do men and women experience hair loss differently?

Dabney: Yes. Hair loss often looks and develops differently in men versus women because of hormones and genetics.

• Men: The most common type is androgenic hair loss (also called male pattern baldness). It usually starts with a receding hairline or thinning at the crown. It’s driven largely by DHT, a hormone derived from testosterone, which shrinks hair follicles over time.

• Women: Hair thinning is usually more diffuse and spread across the scalp, rather than forming a distinct bald spot. This is often called female pattern hair thinning. Hormonal changes, like perimenopause, menopause, PCOS, or thyroid imbalances, play a big role. Stress, nutrient deficiencies, and chronic inflammation can also contribute.

While the patterns may look different, the underlying principle is the same: hair follicles are sensitive to hormones, inflammation, and nutrient availability.

At Restore + Revive we know how frustrating hair loss can feel, but it’s often a signal that your body needs support. By identifying root causes, whether hormonal, nutritional, stress-related, or genetic, we can take a functional approach to restore healthy hair growth. Even small changes can have a meaningful difference.

To schedule an appointment with Dabney Poorter or one of our Functional Medicine providers, you can call us at 817-720-6220 Ext. 2 or email integrative@restoreandrevivefw.com.

Disclaimer: The information provided in this blog is for educational and informational purposes only and is not intended as medical advice. Always consult with your healthcare provider before starting any new service, product, or treatment. Please note that prices, offerings, and other details mentioned in this post reflect information available at the time of publication and may have changed since.

Restore + Revive Gift Guides 2025

Get gifting with R+R!

We’ve rounded up our team and provider favorites to bring you a collection of items we truly love. From wellness treats to everyday must-haves, these picks are tried, trusted, and sure to make anyone’s holiday wishes come true!

OUr Favorite Sets

Rowe Casa Bath Bomb Set Six
This set of natural, therapeutic bath bombs is designed to ease inflammation, draw out toxins, calm dry or irritated skin, and support balanced pH levels while you unwind in a warm bath. The collection features Calm, Immunity, Muscle Relief, Revive, Romance, and Sleep. Available in store for $37.

Innersense Pure Travel Trio
A convenient travel set created for fine to medium hair. This trio includes 2 oz sizes of Pure Harmony Hairbath, Pure Inspiration Daily Conditioner, and Sweet Spirit Leave In Conditioner to keep your hair nourished wherever you go. Available in store for $27.

OSEA Bestsellers Discovery Kit
This four-piece travel kit offers a complete mini facial routine along with the brand’s award-winning body oil. Inside you will find Ocean Cleanser, Hyaluronic Sea Serum, Atmosphere Protection Cream, and Undaria Algae Body Oil to cleanse, hydrate, and boost your glow. Available in store for $48.

Kate McLeod Holiday Body Stone Duo
This limited edition duo features the soothing Lavender Cocoa Body Stone paired with the luxurious Cardamom Rose blend. Each Body Stone is a concentrated cocoa butter formula rich in fatty acids that deeply hydrates the skin. The solid bar melts on contact, absorbs quickly, and leaves skin smooth and radiant with no greasy feel. Available in store for $65.

FOR THE Foodie

R+R Farm Co-Op Membership
From local farms to your kitchen. Enjoy organically grown vegetables and pasture-raised meats sourced from local farms. Becoming a member of The R+R Farm Co-Op supports sustainable and regenerative farming while giving you reliable access to fresh, locally raised food. Purchase membership online for $89 per year.

Flamingo Estate Olive Oil
Crafted from organically grown olives that are hand-picked and pressed right away to lock in freshness. This beautiful green oil delivers bright, peppery flavor with a smooth, fruity finish. Thanks to its high smoke point, it works wonderfully for dipping, finishing dishes, roasting, and everyday cooking. Available in store for $48.

Purity Single Serve Coffee Sachets
Your ideal grab-and-go coffee option. These single serve sachets come in a pack of five and feature USDA organic, specialty-grade beans that are hand-picked, sustainably grown, and third-party tested for mold and toxins. In-store varieties include Calm (Decaf), Ease (Dark Roast), and Flow (Original Medium Roast) for $13.

Just Ingredients Protein Powder
Crafted with four clean protein sources, including non-denatured, 100% grass-fed whey from New Zealand, this blend offers a complete amino acid profile without fillers. There are no artificial flavors, sugar alcohols, gums, synthetic emulsifiers, or artificial sweeteners. In-store flavors include chocolate, vanilla bean, strawberries and cream, and lucky mint for $60.

Visp Mixer
A sleek, portable glass mixer made for blending protein, collagen, matcha, supplements, and more. The rechargeable design makes it easy to take anywhere. Available in store for $99.

Just Ingredients Electrolytes
These Fruit Punch Electrolytes are formulated to support hydration with a balanced 3 to 1 potassium-to-sodium ratio. With five essential electrolytes and real fruit flavor, they contain no artificial sweeteners or natural flavors. Available in store in a 20-pack box for $40 or in a 30-serving bag for $25.

For the homebody

Kate McLeod Sleep and Breath Pebbles
These award-winning bath and shower oil pebbles deliver a rich conditioning treatment that locks in moisture while you soak or rinse. Each tray includes 20 single-use Pebbles that provide 20 relaxing baths or showers. Available in Sleep and Breath scents. Available in store for $42 per tray.

Branch Basics Premium Starter Kit
Designed to be safe for both kids and pets, this starter kit replaces your entire cleaning lineup with one effective, plant-based concentrate. It includes a set of refillable bottles so you can mix the right solution for each area of your home. Available in store for $75.

Rowe Casa Cheer Hand Soap
Regular handwashing should still feel gentle. Rowe Casa’s Christmas Cheer Hand Soap offers a soft foam while cleansing effectively and keeping skin comfortable. Made with plant-based Castile soap, nourishing oils, and a warm holiday essential oil blend, this festive soap brings comfort and joy to every sink. Available in store for $14.

Rowe Casa Room Spray
If you want a fresh home without synthetic fragrances, these natural room sprays are a great option. Made with simple ingredients like distilled water and pure therapeutic-grade essential oils, they freshen the air in a clean and safe way. Available in store for $18.

Apothenne Clean Candles
Our go-to candle for a clean burn. Each candle offers about 42 hours of burn time and is made with non-toxic, all-natural soy wax, premium essential oils, and a natural cotton wick. Handcrafted and available in a variety of scents. Available in store for $33.

For the Self care savant

Queen of Thrones Castor Oil + Thyroid Pack
Give your thyroid restorative care with this Thyroid Castor Oil Pack. It features an inner layer of 100% organic cotton and adjustable straps for a comfortable, low-mess experience. Designed to hydrate and support smooth, healthy-looking skin in the thyroid area. Best when paired with Queen of the Thrones Organic Golden Castor Oil. Available in store for $44.

Enviromedica Magnetic Clay Bath
Turn your bath into a soothing wellness ritual with this Magnetic Clay Bath powder. The blend of mineral-rich montmorillonite clay and Himalayan salt helps cleanse and rebalance so you step out feeling refreshed and renewed. Available in store for $11.

Aleavia Body Cleanse
Aleavia Enzymatic Body Cleanse lifts away dirt, toxins, and excess oils while naturally feeding the beneficial bacteria on your skin. Available in a variety of scents in store for $20.

Rowe Casa Lymphatic Cream
A healthy lymphatic system supports overall wellness and supports detoxification. This natural lymphatic cream is crafted to encourage lymph fluid movement so your immune and circulatory systems can function at their best. Available in store for $43.

Lumebox Red Light
The gift everyone want to receive this holiday season. This compact red light device is a powerful, all-in-one tool for skin support, joint comfort, muscle recovery, and more. It delivers both Red (660 nm) and Near Infrared (850 nm) wavelengths from each bulb for maximum results. Use it anytime and anywhere. Available in store for $399.

Stocking stuffers

Jacob Bars
Most protein bars are packed with ingredients you would rather avoid, but Jacob created a clean option you can feel good about. No seed oils, sweetened only with honey, and never artificial. A variety of flavors available in store for $6.

Kate McLeod The Everywhere Stick
Your go-to hydration balm for life on the move. The Everywhere Stick blends four nourishing plant butters to deliver rich moisture and quick relief for dry, chapped skin. Available in store for $28.

Beekeeper’s Propolis Throat Spray
Propolis is naturally rich in antioxidants like flavonoids and polyphenols that help fight free radicals and support immune health. This tasty throat spray helps soothe, protect, and keep wellness in check. Available in store for $14.

Rowe Casa Lip Balm
A clean, all-natural lip balm that nourishes and softens while preventing chapped lips. Made with simple, moisturizing ingredients. Available in store for $6.

OSEA Ocean Eyes
This cooling gel serum uses seaweed, hyaluronic acid, caffeine, and peptides to visibly smooth fine lines and reduce puffiness and dark circles. The metal rollerball applicator adds an extra-refreshing feel. Available in store for $58.

VI02 Mouth Tape
If snoring or mouth breathing is getting in the way of good sleep, VI02 offers a gentle solution. Doctor created and mom approved, this tape is unscented, hypoallergenic, and free of latex, PFAS, and other forever chemicals. Available in store for $27 (48 strips).

Brooklyn Biltong Jerky
Grass-fed and full of bold flavor. This pure biltong contains zero sugar and no artificial ingredients. Available in store in a variety of flavors for $9.

These product descriptions were created using details shared by the brands. Products and prices can change at any time.

Vitamin D and Immunity: Why Deficiency Spikes in Winter (and What You Can Do About It)

As the days get shorter and the weather cools down, many people start to feel run-down, fatigued, or catch more colds and viruses than usual. What’s to blame? While there isn’t one single cause, one major culprit is often low levels of vitamin D , the “sunshine vitamin.”

Vitamin D deficiencies tend to become more frequent during the winter months, and for good reason. Between spending more time indoors, shorter daylight hours, and weaker sun exposure, our bodies simply don’t produce enough. But here’s the good news: understanding how vitamin D impacts your immune system, and how to restore healthy levels, can make a big difference in how you feel all season long.

Why Vitamin D Matters for Immunity

Vitamin D is a powerhouse nutrient that plays a major role in immune defense. Essentially, Vitamin D helps regulate T-cell function and supports balanced immune responses, which play a role in defending against infections.

Vitamin D is unique because your body can produce it naturally, primarily when your skin is exposed to sunlight. When your vitamin D levels drop, your immune system can’t respond as efficiently, leaving you more vulnerable to colds, flu, and other illnesses.

Why Deficiency Spikes in Winter

Even in warm and sunny Fort Worth, vitamin D deficiency can become more common in winter. Here’s why:

Less Sunlight Exposure
During the colder months, shorter days and cooler weather mean we spend less time outside. Vitamin D is synthesized in your skin through sunlight, so less exposure = lower production.

Weaker UVB Rays
Even if you are outside, the angle of the winter sun reduces the strength of UVB rays that trigger vitamin D synthesis, especially early in the morning or late afternoon.

More Time Indoors
Between holiday gatherings, less than desirable weather, and indoor activities, many of us spend most of the day inside. Windows block UVB rays, so even sitting by a sunny window won’t boost vitamin D levels to the level needed.

Lifestyle & Nutrition
Low dietary intake can compound the problem. Few foods naturally contain vitamin D, so without supplementation or fortified foods, levels can quickly drop. It’s also no coincidence that the biggest holiday months - Halloween, Thanksgiving, Hanukkah, Christmas, and New Year’s Eve - all fall during this same time frame. Sugar and processed foods tend to be everywhere, while nutrient-dense meals and healthy eating habits often take a back seat.

These lifestyle shifts can leave your immune system more vulnerable right when your vitamin D levels are already dropping. Less sunlight, more sugar, and fewer whole foods create the perfect storm for sluggish energy, low mood, and increased susceptibility to illness.

Signs You Might Be Low in Vitamin D

Did you know Vitamin D deficiency is a common global issue. About 1 billion people worldwide have vitamin D deficiency, and approximately 35% of adults in the United States are deficient, according to the Cleveland Clinic.

Symptoms of low vitamin D can be subtle and often overlap with other conditions. Common signs include:

• Frequent colds or infections

• Fatigue or low energy

• Muscle weakness or bone pain

• Mood changes or “winter blues”

• Slow wound healing

If you’re unsure, the best way to confirm deficiency is through a simple blood test.

How to Support Healthy Vitamin D Levels

At Restore + Revive, we take an individualized approach to restoring optimal Vitamin D and supporting immune health. Here’s what we recommend:

1. Spend Time Outside

Even on colder days, try to get at least 10–30 minutes of sun exposure daily, ideally around midday when UVB rays are strongest. A short walk, stretching, or simply stepping outside for fresh air can help your body produce vitamin D naturally.

2. Eat Vitamin D–Rich Foods

Vitamin D is fat-soluble, so your body can store it in fat and liver tissue. The “sunshine production” pathway creates vitamin D3 (cholecalciferol) in your skin when UVB rays hit. Once produced, it’s metabolized in the liver and kidneys into its active form that the body can use.

Some foods contain vitamin D naturally or are fortified with it. Eating these foods provides additional vitamin D that your body can absorb directly, supplementing what you might make from sunlight. While sunlight is the main source, certain foods can boost your intake:

• Fatty fish like salmon, mackerel, sardines, and tuna

• Egg yolks

• Mushrooms- shiitake, portobello, cremini

• Cows milk and fortified alternatives (soy, almond and oat milk)

• Cod liver oil

Essentially, foods act as an external source of vitamin D to help maintain adequate levels when your body isn’t making enough from sunlight, which is especially important in winter months or for people who spend most of their time indoors.

3. Pair With Healthy Fats

Vitamin D is fat-soluble, meaning your body absorbs it better when eaten with healthy fats like avocado, olive oil, nuts, and seeds.

4. Get Tested

Test your vitamin D levels via a simple blood test, this provides a baseline for your provider to create a personalized supplementation plan. Everyone metabolizes vitamin D differently, so what works for one person may not be enough for another.

5. Supplement Smartly

Vitamin D3 is the preferred form for most people because it’s the same type your body naturally produces. The right dose depends on your levels, absorption, and overall health, which is why our team of functional medicine providers tailor supplementation plans to each individual.

6. Pair with Vitamin K2

Vitamin K2 helps direct calcium into your bones and out of your arteries, enhancing vitamin D’s benefits and supporting cardiovascular health.

7. Prioritize Whole-Body Wellness

Optimal immunity isn’t just about one nutrient. Adequate sleep, hydration, nutrient-dense foods, and balanced stress all strengthen your immune defense.

8. Consider Vitamin Shot Therapy

For those who are significantly deficient or need faster replenishment, Vitamin D shots can deliver vitamin D and other immune-boosting nutrients directly into your system for enhanced absorption.

Support Your Immune Health This Winter in Fort Worth

If you’re feeling run-down or want to strengthen your immune system naturally, our team can help. At Restore + Revive, we combine functional medicine with individualized testing to identify nutrient deficiencies and design a plan that supports your whole-body wellness.

Call (817) 720-6220 to book an appointment or learn more about how we can help you.

Disclaimer: The information provided in this blog is for educational and informational purposes only and is not intended as medical advice. Always consult with your healthcare provider before starting any new service, product, or treatment. Please note that prices, offerings, and other details mentioned in this post reflect information available at the time of publication and may have changed since.