Product Education
4 Min Read
Hair thinning is far more common than most people realize—and often begins due to underlying root causes like stress, nutrition, and lifestyle. Your hair is actually one of the clearest windows into what's happening inside your body.
That's the foundation of Nutrafol's approach to hair health. And it's what our partner accreditation program, Nutrafol Academy, was built to teach.
More common than you might think. One in 2 women will experience hair thinning in their lifetime, and over 80% of men will, too.1,2 It's not exclusively a getting-older thing, either. It can happen at different stages of life—and looks different for everyone.
You might notice more strands in the shower drain, or on your brush. Maybe you're seeing more of your scalp than you used to, or thinner spots when you pull your hair up or back. Whatever it looks like for you, you're not alone—and there are real, physiological reasons behind it.
Most conversations about hair thinning focus on what's happening at the surface. But the real story starts inside the body. In our research, we identified 6 key root causes that commonly lead to hair thinning:
Physical or emotional stress—whether from a demanding job, a major life event, or a health challenge—can raise cortisol levels. That stress hormone signals your hair follicles to stop growing and start shedding.
Too much sugar, not enough protein, or an imbalanced gut microbiome can reduce the nutrients available to support a healthy hair growth cycle. Your hair follicles need the right fuel to grow.
As we age, hormonal shifts can make us more sensitive to DHT, a hormone that causes hair follicles to shrink (miniaturize), causing shedding, hair thinning, and eventually hair that can no longer grow. Hormones biologically affect hair growth in men and women differently.
Everything, from the products you use, to the air you breathe, can introduce environmental stressors that may weaken follicles and contribute to breakage and brittle strands.
A slower metabolism means slower nutrient delivery to the follicle—which can result in breakage and hair that struggles to reach its full growth potential.
Through the natural process of biological aging, your scalp loses collagen and elastin. This structural breakdown prevents key components, like blood vessels, fats, and pigment cells, from protecting, hydrating, and replenishing key nutrients needed for healthy hair growth. With the loss of collagen and elastin, the scalp is no longer as strong and able to hold on to hair. As a result, hair cannot grow as long, becomes weaker, and less pigmented.
Most conventional hair products are designed to address what you see—texture, shine, or volume. But root causes of hair thinning can be internal, so an external option can only go so far.
That’s where Nutrafol Hair Growth Nutraceuticals come in. By targeting key root causes from within, they work with your body—not just your hair.
Hair thinning at age 28 looks different from hair thinning at age 58. Root causes shift and change. That's why Nutrafol offers hair growth formulas tailored to target key root causes most relevant to your specific life stage and biology.
Read More About How Nutrafol Works:
What are some of the key root causes of hair thinning?
Research points to 6 key root causes: stress, nutrition, hormones, lifestyle factors, metabolism, and aging. Hair thinning often involves more than one of these factors working together.
Can stress really lead to hair thinning?
Yes. Physical or emotional stress can raise cortisol levels, which may interfere with the normal hair growth cycle, signaling follicles to shed rather than grow. Managing stress is one key component of a whole-body approach to hair wellness.
Why do hormones affect hair?
Hormonal shifts (particularly changes in DHT sensitivity) can cause follicles to shrink and possibly close up over time.
Is hair thinning permanent?
Not necessarily. Because hair thinning is often driven by internal factors, addressing those root causes—through targeted nutrition, stress management, and supplementation—can support the hair growth cycle and help support visibly thicker hair and less shedding over time.
Does Nutrafol have different formulas for different people?
Yes. Nutrafol offers multiple Hair Growth Nutraceuticals designed for different life stages, including formulas for women 18–44, women 45+, postpartum women, men 18-49, and men 50+. Each formula targets key root causes most relevant to that stage.
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.
References:
Ramos PM, Miot HA. An Bras Dermatol. 2015;90(4):529-543, Gan DC, Sinclair RD. J Investig Dermatol Symp Proc. 2005;10(3):184-189. Dinh QQ, Sinclair R. Clinical Interventions in Aging 2007:2(2) 189–199., Chaikittisilpa, S et al. Menopause, 2022:29(4):415-420. (estimating that over half of women experience various forms of natural hair thinning in their lifetime)
"Gan DC, Sinclair RD. J Investig Dermatol Symp Proc. 2005;10(3):184-189 Hamilton, J. Ann N Y Acad Sci. 1951;53(3):708-28. Norwood, OT. South Med J. 1975;68(11):1359-65."
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These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
