Hair thinning affects millions of people, and despite what many think, it’s not always about aging or your family tree.
One of the most overlooked causes of unexpected hair loss? Hormonal imbalances. These invisible shifts inside your body can mess with your hair growth cycle, making strands grow slower, fall out faster, and come back thinner (if at all).
What’s even more frustrating? You might be experiencing these imbalances without even knowing it.
In this blog, we’ll break down the most common hormonal culprits behind hair thinning — like DHT, thyroid issues, and vitamin D deficiency — and explore the powerful nutrients that may help get things back on track.
Whether you’re just starting to notice more shedding or you’ve been battling thinning hair for a while, understanding the hormone-hair connection is key. And the good news? There are ways to support your body from within.
Let’s get one thing straight — your hair doesn’t just fall out for no reason. Most of the time, something internal is triggering it. And more often than not, that “something” is hormones.
Hormones are your body’s chemical messengers. They influence everything from mood to metabolism — and yes, even hair growth. When they’re in balance, your hair typically follows a healthy cycle: growth, rest, shed, repeat. But when hormones are out of sync? That cycle gets disrupted.
Here are a few of the most common hormonal culprits behind thinning hair:
Dihydrotestosterone (DHT) is a hormone derived from testosterone. And while it’s important for many bodily functions, too much of it can spell trouble for your hair.
DHT binds to receptors in your scalp’s hair follicles and causes them to shrink. Over time, these follicles produce thinner and weaker hairs until they stop producing hair altogether.
This is one of the leading causes of pattern hair loss in both men and women. The good news? Certain nutrients may help naturally block DHT production and protect the follicles — we’ll get into those shortly.
Your thyroid hormones (T3 and T4) help regulate metabolism, including the growth cycle of your hair. If your thyroid is underactive (hypothyroidism), it can slow down this cycle, leading to more hair in the “resting” phase and less in the “growing” phase.
People with thyroid imbalances often notice increased shedding, thinning, and even changes in hair texture. Nutritional support is crucial here, especially when it comes to selenium, which plays a vital role in thyroid hormone metabolism.
Vitamin D isn’t just for bones. And it’s not just a vitamin. It’s actually a hormone that activates hair follicles and helps maintain a healthy hair growth cycle. When you don’t get enough of it — and most people don’t — it can delay the anagen (growth) phase of hair development.
That means hair may fall out and take much longer to grow back, or grow back weaker than before. Vitamin D deficiency is surprisingly common, especially in colder climates or for those who spend most of their time indoors.
You might already know that stress can lead to hair loss, but the hormone behind it, cortisol, is often the real reason.
When your body is under chronic stress, cortisol levels rise. This spike can push hair follicles into the “shedding” phase too early. This is known as telogen effluvium, and it can lead to sudden, widespread hair thinning.
Reducing stress is key — but so is supporting your body with adaptogenic and antioxidant-rich nutrients that help it respond to stress more efficiently.
Now that we’ve uncovered how hormones like DHT, cortisol, and thyroid hormones can disrupt your hair growth, let’s talk solutions.
While there’s no magic pill for perfect hair, certain nutrients have been shown to support hormone balance, nourish your follicles, and promote healthy hair growth — especially when delivered in a way your body can actually absorb.
That’s where Complete Biotin Plus shines. Here’s how its key ingredients work to support your hair from within:
Biotin (vitamin B7) is essential for producing keratin, the structural protein that makes up your hair. A deficiency in biotin can lead to thinning, brittle strands, and increased shedding.
But here’s the kicker: not all biotin supplements are easily absorbed. Complete Biotin Plus uses micelle liposomal technology, which helps your body absorb more of this critical nutrient — meaning better support for your scalp and strands.
Biotin has also been shown in studies to improve hair thickness and shine, especially in people with thinning hair or brittle nails.
As mentioned earlier, low vitamin D levels are linked to various types of hair loss — particularly telogen effluvium and alopecia areata.
Vitamin D helps activate receptors in your hair follicles and encourages them to enter the anagen (growth) phase. Complete Biotin Plus includes a highly bioavailable form of vitamin D to help your follicles fire back up and support consistent hair regrowth.
Selenium is a trace mineral that plays a major role in thyroid hormone production. And since your thyroid controls the speed of your hair cycle, that’s a big deal.
But selenium’s benefits don’t stop there. It also acts as an antioxidant, protecting your scalp from inflammation and oxidative stress that could otherwise damage follicles.
Pumpkin seed oil has gained attention for its potential to inhibit 5-alpha reductase — the enzyme that converts testosterone to DHT. In one study, men who took pumpkin seed oil saw a 40% increase in hair count over 24 weeks.
This makes it a promising, plant-based way to support your body in fighting back against DHT-related hair thinning, especially when combined with the other nutrients in this formula.
This ancient remedy (also known as Nigella sativa) is loaded with antioxidants and anti-inflammatory compounds, both of which help create a healthy environment for hair to thrive.
By calming inflammation and reducing oxidative damage — two major contributors to follicle miniaturization — black cumin seed oil supports a balanced scalp and healthy regrowth conditions.
Vitamin E is another antioxidant superstar. It helps improve blood flow to the scalp, ensuring your follicles get the nutrients and oxygen they need to grow strong, healthy hair.
Research also suggests vitamin E can reduce oxidative stress, improve shine, and even boost hair count in people dealing with hair thinning.
Together, these ingredients create a synergistic formula — not just targeting hair growth, but supporting the root causes of why your hair may be falling out in the first place.
Hair loss can feel discouraging — even a little scary — but it’s rarely random. In many cases, it’s your body’s way of waving a flag and asking for help. And as we’ve seen, hormones play a major role in the health of your hair — often more than age, styling habits, or even genetics.
By supporting your body from the inside out — giving it the nutrients it needs to balance hormones, reduce stress, and nourish your follicles — you’re not just chasing cosmetic results. You’re building a foundation for long-term wellness that shows up in your hair, skin, energy, and more.
If you’re ready to start that process, Complete Biotin Plus is a simple, science-backed way to begin. With targeted nutrients like biotin, vitamin D, selenium, pumpkin seed oil, black cumin seed oil, and vitamin E — all delivered in highly absorbable micelle liposomal form — it’s designed to give your body what it needs to thrive.
Because when your body feels supported… your hair knows it.