Experiencing excessive hair fall can be distressing, but what makes matters worse is the fact that stress makes the problem even more serious. This is one vicious cycle that we can end up getting into without knowing exactly why this is occurring to us. There is a direct connection between stress, the production of cortisol, and hair loss. If you’ve experienced hair loss when things have been tough for you, this is probably not a mere coincidence.
What Is Cortisol?
Cortisol is a steroid hormone that is synthesized in the adrenal cortex. This hormone, once released into the blood and distributed all over the body, is one of the most widespread hormones in the whole endocrine system. It can be found in practically all cells of the body, since almost every cell has receptors for it. Cortisol is vital.
Cortisol regulates many functions. They include such functions as regulation of blood sugar level and metabolism, natural anti-inflammatory effect, memory formation, regulation of salt and fluid balance, maintenance of normal blood pressure, and fetal development in pregnant women. Under appropriate conditions and at an appropriate time, cortisol works beneficially.
However, problems start to occur when cortisol remains high for too long.
How Stress and Cortisol Drive Hair Loss
Long-term stress results in consistently high levels of cortisol. When the adrenal glands are producing extra cortisol, they also produce fewer of the hormones that promote healthy hair growth; one such hormone is DHEA, involved in maintaining the health of hair follicles and the anagen (growth) phase of hair.
Apart from the hormonal issues, long-term high cortisol levels also have downstream effects on hair follicles. It is known that cortisol affects the functioning and cycling of the hair follicle. In periods of long-term stress, cortisol dysregulation causes disruption of the cell signaling process and oxidative stress, interfering with the regular progression of hair growth cycles.
On a cellular level, it has been observed that proinflammatory cytokines such as TNFα, IL-1α, and IL-1β cause vacuole development in hair matrix cells, abnormal keratinization of the inner root sheath and follicle bulb, and disruption of follicular melanocytes. These cytokines may cause premature arrest of hair cycle progression, preventing its transition from the telogen (resting) to the anagen (growth) phase. Consequently, hair ceases to grow and remains dormant before being shed.
Three Types of Stress-Related Hair Loss
There are three distinct types of hair loss associated with elevated stress levels, each with its own mechanism and pattern:
1. Telogen Effluvium
Telogen effluvium is the most common type of hair loss caused by stress. An intense stressor, either physical, psychological, or hormonal, causes many hair follicles to be forced into the telogen stage, which is the resting phase of hair. Hair does not shed immediately after entering the telogen stage; instead, the shedding process usually becomes visible after two to three months following the stressful stimulus. Once hair sheds, it usually occurs all of a sudden when the person is combing, washing, or even touching the hair.
The best thing about telogen effluvium is that it is reversible. After the stressor is managed and the cortisol hormone starts functioning properly, hair follicles can again move into the growth phase.
2. Trichotillomania
The symptom of Trichotillomania involves the uncontrollable urge to pull out hair from the scalp, eyebrows, eyelashes, or any other area of the body. The condition is known to be a body-focused repetitive behavior, and people resort to the act as a means of dealing with negative feelings such as stress, tension, loneliness, boredom, and even frustration. People suffering from this disorder may pull out their hair either consciously or unconsciously; moreover, this behavior results in substantial hair loss.
3. Alopecia Areata
Alopecia areata is an autoimmune disease where the body’s immune system turns against the hair follicles and leads to hair loss, normally in circular bald spots on the scalp, but also the hair of the eyebrows, beard, and other parts of the body. This type of disorder is known to be caused by multiple factors, including stress; people who have genes that predispose them to this illness experience an attack on their hair follicles due to stress.
The Adrenal Connection: Why Hair Health Requires Hormonal Balance
The connection between the adrenal glands and hair health is much stronger than you might think. In addition to producing cortisol, the adrenal glands manufacture DHEA, a hormone precursor involved in a variety of bodily processes, one of which is the regulation of the anagen growth cycle of hair. The more often the adrenal glands remain in stress response, the less DHEA production there is, and thus, the less support there is for the hair growth cycle.
That’s why, when hair loss occurs due to stress, it does not always get better after the stressor is removed. Should adrenal function be affected to the point where the cortisol cycle is affected, the ratio of cortisol to DHEA becomes skewed, or cortisol levels drop due to burnout, the environment needed for hair growth won’t return to normal on its own.
It is important to look into the whole picture of what is happening with the adrenals, including their cortisol production cycle and the level of DHEA.
Other Hormones That Affect Hair Loss
However, while the two hormones mentioned above play crucial roles in stress-induced hair loss, some other hormones can affect hair loss in one way or another if their level becomes imbalanced:
Androgens: Imbalance between the androgen hormones in the body may cause androgenetic alopecia (pattern hair loss) in both men and women. The reason for the increased androgen level is chronic stress, because stress can cause an imbalance of androgen hormones via the adrenal androgen pathway.
Thyroid hormones: Hypothyroidism and hyperthyroidism are the most common conditions related to thyroid hormone imbalance, which lead to hair loss. Chronic stress can disrupt the work of the thyroid gland.
Estrogen and progesterone: These hormones promote the anagen phase of the hair cycle. Reduced or imbalanced levels of these hormones due to stress or perimenopause can cause more hair loss.
Insulin: Insulin resistance caused by chronic cortisol increase leads to imbalanced androgen hormone levels.
Testing for Stress-Related Hair Loss
Determining if abnormal cortisol regulation is playing a role in hair loss is not as simple as just drawing one cortisol blood sample. This single measurement will not be able to give you insight into the diurnal rhythm of cortisol – whether there is an increase in the evening levels, a decrease in morning levels, or whether it is not following the normal diurnal pattern of being higher when you wake up and lower throughout the day.
Dried urine cortisol testing is an excellent non-invasive test that gives a comprehensive view of how the adrenal glands are functioning and what the cortisol rhythm looks like. This test not only measures free cortisol (cortisol levels at any particular time point) but also cortisol metabolites (total amount of cortisol production during the day).
The DUTCH Complete panel measures diurnal free cortisol rhythm as well as cortisol metabolites, DHEA-S, and sex hormone metabolites – thus making it ideal for determining the cause of stress-related hair loss.
DUTCH Plus goes one step further by incorporating the Cortisol Awakening Response (CAR) using salivary samples taken during the first hour of wakefulness to assess communication between the brain and adrenal glands every day when waking up. The CAR is the best measure of HPA-axis functionality and the body’s chronic stress burden in any hormone test that exists, capable of detecting dysregulation even when the individual does not show signs of abnormality in their cortisol throughout the day.
If you are struggling with hair loss due to stress, then knowing what your cortisol curve looks like is a good place to start. A free consultation from dutchtesting.org will help establish if DUTCH testing is right for you.
Supporting Hair Health Through Stress and Hormonal Recovery
The solution to stress-induced alopecia involves work on two fronts: managing the stressor and restoring the body’s normal hormonal levels in the wake of stress relief. A few strategies to consider include:
Stress management
Consistent habits that lower physiological stress levels – adequate sleep, mindfulness, moderate exercise, and nervous system regulation – will help regulate cortisol levels and therefore restore follicles.
Nutritional support
Several nutrients play an important role in both adrenal function and hair health, including Vitamin C (involved in adrenal hormone synthesis), zinc (helpful for follicle health and testosterone metabolism), biotin (B vitamin related to hair structure), iron (deficient in many females due to heavy menstruation), and B vitamins, including B5, which is helpful for adrenal function.
Adaptogenic herbs
Botanicals like ashwagandha, rhodiola, and eleuthero are known to have scientific evidence regarding their ability to decrease cortisol levels and increase stress resistance, which would in turn help with hair regrowth due to malfunctioning adrenals.
Targeted hormone support
When there are specific issues with one’s hormones that are causing the hair loss, specifically low DHEA, high androgens, or estrogen deficiency, one can take a targeted hormonal supplement.
Frequently Asked Questions (FAQs)
1. Can stress really cause hair loss?
Yes. When chronic stress leads to increased cortisol secretion, it will disturb the hair growth cycle by causing the follicles to enter the telogen (resting) stage and lower DHEA, which is needed for active hair growth. There are three types of hair loss caused by high stress levels: telogen effluvium, trichotillomania, and alopecia areata.
2. How long after a stressful event does hair loss appear?
In case of telogen effluvium – the most common form of stress-induced hair loss, the hair shedding will begin two to three months after the stressor, since the hair does not shed right away when it enters the resting stage.
3. Is stress-related hair loss permanent?
No, usually. In most cases, telogen effluvium is reversible as soon as the stressor stops and the cortisol level becomes normal again. However, alopecia areata may have an unpredictable outcome.
4. How does cortisol specifically damage hair follicles?
Chronic cortisol elevation promotes proinflammatory cytokines, including TNFα, IL-1α, and IL-1β, which disrupt cell signaling in hair follicles, cause abnormal keratinization, and prevent the hair cycle from transitioning from the resting telogen phase back into the active anagen growth phase.
5. What is the best test for assessing cortisol and stress-related hair loss?
Dried urine cortisol testing – as offered in the DUTCH Complete and DUTCH Plus – provides a comprehensive view of the daily cortisol pattern, total cortisol production, and DHEA levels. The DUTCH Plus additionally includes the Cortisol Awakening Response (CAR), which is one of the most sensitive available indicators of HPA axis function and chronic stress burden.
6. Which other hormones besides cortisol can contribute to hair loss?
Elevated androgens (particularly DHT), thyroid hormone imbalances, declining estrogen and progesterone, and insulin resistance can all contribute to or worsen hair loss – often in combination with cortisol dysregulation during periods of chronic stress.
7. Can supplements or herbs help with stress-related hair loss?
Yes, certain nutritional and botanical supports have evidence behind them. Key nutrients include Vitamin C, zinc, biotin, iron, and B vitamins – all relevant to adrenal and follicle health. Adaptogenic herbs such as ashwagandha and rhodiola may also support cortisol normalization and stress resilience over time.
