Caffeine Has a Much Worse Reputation Than It Deserves

By Tina Chagoury, Clinical Dietitian · 5 min read · 2026-11-02

Caffeine is a genuinely useful compound. The trouble is almost always when you drink it and how much, not whether you do.

Caffeine has a considerably worse reputation than it deserves. It is a genuinely healthy compound, it supports performance in training, and there is no reason for most women to give it up.

The problems come from quantity and timing.

The morning problem

Here is the most common mistake: coffee first thing, on an empty stomach, before anything else.

Cortisol is naturally at its highest in the first hour or so after waking. That is by design, and it is what gets you going. Adding caffeine on top of that peak, with no food to buffer it, pushes cortisol higher than it needs to go.

For a woman who is already stressed, already sleeping badly and already in a state of nervous system dysregulation, that is not a helpful start to the day.

What to do instead

Have something with it, or before it. Coconut milk in the coffee, or a small breakfast beforehand, is enough to blunt the effect.

Better still, eat protein within the first hour of waking, then have the coffee. This is the highest yield morning habit anyway, and it solves the caffeine timing problem at the same time.

The evening problem

Caffeine has a long half life. The coffee at four in the afternoon is still meaningfully present at bedtime, even if you fall asleep without difficulty.

This is the part people misjudge. Being able to fall asleep after late caffeine does not mean it has not affected your sleep. It affects sleep architecture, particularly deep sleep, which is where hormonal repair happens.

If your sleep is poor, moving your last coffee earlier is one of the easiest experiments available.

The caffeine nap

There is a genuine technique here that most people have not heard of.

Drink the coffee, then sleep for fifteen to twenty minutes immediately. Caffeine takes roughly that long to take effect, so you wake as it arrives, with the benefit of both the rest and the stimulant.

Used occasionally, it is considerably more effective than either alone.

Coffee or matcha

When people ask me to choose, I usually say matcha, for one specific reason: it does not produce as much stimulation in people who are sensitive to caffeine.

The compounds in matcha moderate the effect, which produces a steadier curve rather than a sharp rise and fall. For a woman whose nervous system is already overstimulated, that is the better option.

How much is too much

There is no single number, because sensitivity varies enormously and is partly genetic.

The practical markers that you have crossed your own line:

• You cannot function in the morning without it
• Your sleep is poor and you have not tested whether caffeine is contributing
• You feel jittery, anxious or notice your heart racing
• You are using it to replace food, which is very common and very counterproductive

The context that matters most

Caffeine is not what is wrong with your hormones.

If you are not sleeping, not eating enough, not hydrating and living under sustained stress, the coffee is a minor factor. Removing it while leaving all of that in place will change very little.

Keep it. Time it better. Eat first. And do not use it to paper over a sleep problem that needs solving.

This article is nutrition education, not medical advice.

Tina Chagoury is a licensed clinical dietitian specialising in women's hormonal health, and the creator of the Hormone Reset Method™. Learn more and start here.