How to lower cortisol: what helps and what does not

If you are looking for ways to lower cortisol, the short answer is that the most effective changes are boring ones: a consistent sleep window, less caffeine after lunch, real breaks during the day, regular movement and regular meals. None of them work overnight. And the remedies sold as miracles tend to do nothing they promise. Cortisol itself is not a problem — it is a hormone your body needs. The problem is the chronic stress pattern that keeps it elevated, and that pattern is usually built from routine, not from anything exotic.

Before we go further, one thing worth clearing up: the idea of "adrenal fatigue" as a diagnosis is not supported by robust evidence. Tiredness exists, stress exists, bad nights exist. "Adrenal fatigue" is a label that circulates widely and does not correspond to a recognised diagnosis. If someone is selling you a treatment for it, be sceptical. A recent search of the medical literature on cortisol turned up 14 records across two search terms, which tells you how thin the direct evidence on the everyday question still is.

What usually pushes cortisol up day to day

It is rarely a single cause. In practice, what you see is an accumulation. The most common contributors, roughly in order of frequency, are:

• Sleep debt and an irregular sleep schedule — probably the most underestimated factor.
• Caffeine intake, especially later in the day.
• Long stretches without a real break, with screens filling every gap.
• Irregular meals, skipping meals and compensating with coffee and sugar.
• Ongoing stress at work or at home that never gets a proper outlet.
• Intense training without enough recovery.

Notice that almost nothing on this list is exotic. It is routine. And that is why the changes that work are also unglamorous.

What you can change this week

Start with what has the most impact and the least cost. If you can only do one thing, do the first one.

1. Protect a fixed sleep window

Pick a bedtime and a wake time, and stick to them seven days a week, including the weekend. You do not need to sleep eight hours immediately; you need consistency. Give it two weeks before you judge it.

2. Cut caffeine after lunch

If you drink three or four coffees a day, cut back to two and have none after 2pm. This is not a universal rule — it is a reasonable starting point. If you have insomnia, try two weeks without afternoon caffeine and see what changes.

3. Take a real break, not a screen break

Ten minutes outdoors, without your phone, once or twice a day. It sounds small. Small, frequent and sustainable beats a grand gesture you abandon by Thursday.

4. Move, but do not go all-out every day

Thirty minutes of brisk walking, four or five times a week, is a solid base. If you already train intensely, make sure you have at least one true rest day.

5. Eat at roughly the same times

You do not need a special diet. You need regular meals, with enough protein that you are not skipping meals and compensating with coffee and sugar. Regularity is worth more than perfection.

What tends not to help

This is where time and money get lost. Several popular recommendations do not have the support people attribute to them.

Supplements sold as a treatment for adrenal fatigue. As already said, that diagnosis is not recognised. What is sold for it is solving a problem that does not exist in the form advertised.

Supplements as a single solution. If you sleep five hours, drink four coffees and take no breaks, no tablet compensates for that. The foundation has to be there first.

Chasing a single "cortisol-lowering" food or drink. No single ingredient fixes a pattern built from sleep, caffeine and unrelenting stress. The pattern is the problem, and the pattern is what needs changing.

Where supplements honestly fit

Some ingredients found in supplements have been studied in the context of stress. The level of evidence is, however, emerging: there are promising signals, but no certainties.

One systematic review from 2020 suggested that ashwagandha may reduce cortisol in adults with stress, but the evidence is limited and not entirely consistent. A 2022 meta-analysis found that ashwagandha extract may reduce anxiety and stress, but the trials included had conflicting results. A more recent review, from 2026, looked at 22 randomised clinical trials and suggests that ashwagandha may improve mental health in adults, especially for stress and anxiety. These are interesting data points, not a guarantee. Clinical guidelines mention ashwagandha among nutraceuticals with evidence for stress and anxiety, but recommendations vary.

On safety: a 2021 randomised study in 80 healthy adults found that ashwagandha root extract was well tolerated, but long-term safety data are limited. There are rare reports of liver injury associated with ashwagandha supplements, and herbal supplements account for a growing proportion of cases of drug-induced liver injury, now 20% in one US network. That does not mean it will happen to you, but it does mean it is worth speaking to a healthcare professional before you start, especially if you have liver problems or take other medicines.

As for the other ingredients you find in stress formulas — GABA, L-theanine, vitamin D3 and vitamin B12 — the available evidence does not allow us to say they have an effect on cortisol. We do not present them as if they do.

If you are looking for an option in this category, Stress Relief Gummies contain, per two-gummy serving, 300 mg of ashwagandha extract, 100 mg of L-theanine, 100 mg of GABA, 25 µg of vitamin D3 and 500 µg of vitamin B12. They are for adults. The dose is two gummies a day, preferably after a meal. They should not be used by children, pregnant or breastfeeding women, or by people with thyroid or autoimmune diseases. They may cause drowsiness; if that happens, do not drive or operate machinery. And they are not a substitute for a varied diet or a healthy lifestyle. If you have liver disease, other illnesses or take medication, speak to a healthcare professional first.

This is not a solution for cortisol. It is, at most, a complement to everything above. If the foundation is not in place, the gummies will not compensate.

When this stops being normal and becomes a doctor's matter

Cortisol is a hormone whose levels can vary, and the evidence on controlling it is limited and not fully consistent. There are signs, however, that call for assessment and should not be treated with home remedies.

• Extreme tiredness that does not improve with rest, lasting for weeks.
• Unexplained weight loss or weight gain.
• Intense mood changes, persistent anxiety or low mood.
• Palpitations, tremors or unusual sweating.
• Unexplained changes to your menstrual cycle.
• Sleep problems that persist despite changes to your routine.

If any of these sound like you, speak to your doctor or pharmacist. This is not alarmism: it is recognising that there are things an article cannot solve and that a professional can help clarify. And if you are thinking of taking ashwagandha and you have a health condition or take medication, that conversation should happen before, not after.

How long until you feel a difference

Do not expect results in two days. If after a month there is no difference at all, it is worth reviewing what is slipping: perhaps the bedtime is not being kept, perhaps the caffeine has crept back. The evidence on supplements such as ashwagandha is emerging and studies vary in their results. There is no guaranteed timeline. What there is, is a set of habits with better support than any single tablet.

Start with one thing. Just one. A fixed bedtime is the best place to start. Then, as that foundation settles, add the next. Some studies suggest that ashwagandha may reduce cortisol in adults with stress, but the evidence is limited and not entirely consistent.