Hair loss caused by stress: what causes it and what can you do about it?

Many men notice that they lose more hair during periods of stress. For example, after a busy period at work, an illness or a major life event. This can be confusing, especially if you’re wondering whether it’s permanent. Fortunately, hair loss due to stress is temporary in most cases, provided the body is given the chance to recover. At Fellos, we help men understand hair loss and tackle it effectively. Safely, discreetly and entirely online. In this blog, you can read how stress causes hair loss, when you might notice it and what practical steps you can take.

How does stress cause hair loss?

Hair grows in cycles. Each hair follicle alternates between a growth phase (anagen), a transitional phase (catagen) and a resting phase (telogen), after which the hair falls out and the cycle begins again. Normally, around 85 to 90 per cent of your hair is in the active growth phase at any given time. Prolonged or severe stress can disrupt this balance: a large proportion of the hairs in the growth phase are abruptly forced into the resting phase, after which they fall out en masse a few months later. This phenomenon is called “telogen effluvium” and is the most common form of diffuse, non-scarring hair loss.

Scientific research confirms that both physical and emotional stress can trigger this process through multiple mechanisms simultaneously: hormonal shifts, medication, inflammatory mediators and changes in the microenvironment of the hair follicle all play a role. Under high stress, the body goes into survival mode and effectively regards hair growth as a luxury, preferring to channel energy towards survival.

When do you notice hair loss due to stress?

The insidious nature of telogen effluvium is its delayed onset. Hair loss usually begins two to three months after the stressful event, not immediately during it. Anyone who suddenly notices more hair in their brush or down the shower drain after a busy period may no longer think of the stressful months that preceded it, even though that is precisely the cause. This delayed pattern explains why the link between stress and hair loss is often overlooked.

The good news: in around 95 per cent of cases, acute telogen effluvium resolves itself once the stressor has been removed and the body is given time to recover. In most cases, the hair grows back within three to six months.

What are the signs of stress-related hair loss?

Stress-related hair loss follows a recognisable pattern. You notice more hair on your pillow, in your brush or in the shower drain. The thinning is evenly distributed across the entire scalp, without bald patches or a receding hairline. The latter distinguishes telogen effluvium from hereditary hair loss, where hair typically begins to thin in specific areas, such as the crown or temples. You can read more about the causes and prevention of hair loss in the Fellos knowledge base.

Are you unsure whether your hair loss is caused by stress or has another cause? Then a medical assessment is advisable. At Fellos, Dutch doctors help you make the distinction.

How can you reduce hair loss caused by stress?

The most important step is to address the underlying stressor. As long as the body is under constant pressure, the hair growth cycle remains disrupted. This is, of course, always easier said than done, but there are certainly steps you can take to help your body recover. For example, there are lifestyle factors that support or hinder recovery. Sufficient, good-quality sleep is essential, as the body recovers during the night. A balanced diet with enough protein, iron and zinc supports the production of new hair. Conversely, deficiencies in these nutrients can prolong or worsen telogen effluvium. You should also limit excessive caffeine and alcohol consumption, as both raise cortisol levels and place additional strain on the body. Regular exercise and relaxation techniques such as breathing exercises or meditation help to reduce stress levels in the long term.

Recovery takes time and requires patience. Hair grows on average one centimetre per month, meaning fuller hair only becomes visible after several months, even once the hair loss has stopped.

Can stress cause permanent hair loss?

Stress on its own does not usually cause permanent hair loss. The hair follicles remain intact and can produce new hair once the body has recovered. However, there are situations in which recovery takes longer. If there is a genetic predisposition to hair loss (androgenetic alopecia), stress can accelerate the underlying process or make it more visible. Hormonal imbalances, thyroid problems or iron or vitamin D deficiencies can also slow down recovery. You can read more about at what age men go bald and which factors play a role in this in the Fellos knowledge base.

If your hair has not grown back after six months or the hair loss persists, it is advisable to seek medical advice. There may then be more going on than just telogen effluvium.

What can a Fellos doctor do for you?

At Fellos, you start with an online consultation lasting around three minutes. A Dutch doctor will assess your situation and draw up a personalised treatment plan. This plan may include medication for hereditary hair loss, such as finasteride or minoxidil. You can find more information about available medication for hair loss in the knowledge base.

It is important to distinguish between temporary stress-related hair loss and permanent hereditary hair loss. Both can occur simultaneously, and that is precisely why a medical assessment is valuable. In the case of telogen effluvium, reassurance and support are often the most important interventions; in the case of androgenetic alopecia, targeted medication can slow down or reverse the loss.

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