How do you know how much caffeine is right for you? On this episode, we help you understand the potential side effects of caffeine, how it affects women with PCOS (now PMOS), and how to figure out whether cutting back could help you feel better.
As a Registered Dietitian with PMOS myself, I know firsthand that coffee can be a hard thing to give up, especially if you’re already dealing with fatigue. But caffeine can affect everyone differently, so this isn’t about telling every woman with PMOS to quit coffee. Instead, it’s about understanding how the body responds to it.
I know what you’re asking, “So what does caffeine actually do?” In this episode, we break down how caffeine affects your nervous system, stress response, energy, and sleep, plus why the amount you drink and even certain medications can change how long you feel its effects.
We’ll also cover the systems commonly described as “adrenal fatigue,” how to gradually cut back on caffeine without going cold turkey, and how to find an amount that works better for your body. Definitely tune into the episode for the full conversation! But for those who want the quick highlights first, we have all the information below:
Should I Cut Out Caffeine with PMOS (PCOS)?
This isn’t a straightforward answer as your ability to break down caffeine is individual to you. Some people are more sensitive, some people aren’t as sensitive. Your response depends on factors like how quickly you metabolize caffeine, how much you’re consuming, when you’re drinking it, your sleep, medications, and how sensitive you are to its stimulating effects.
Caffeine stimulates the central nervous system and can temporarily make you feel more alert and energized. It can also increase adrenaline and affect your body’s stress response. For someone who already notices anxiety, difficulty sleeping, jitters, or that “wired but tired” feeling, adding a lot of caffeine may make those symptoms more noticeable. And for those of us with PMOS who already struggle with cortisol, stress, and hormone dysregulation, we have to be a little more selective about how much we consume.
That doesn’t mean automatically mean you need to cut it out altogether, though! If you enjoy your morning coffee, sleep well, and don’t notice negative effects, you may find that a moderate amount works just fine for you. On the other hand, if you rely on caffeine to get through the day and then struggle to wind down at night, it’s worth looking more closely at how much you’re drinking… and when.
What Caffeine Does To The Body?
At the end of the day, caffeine is a stimulant. It affects the central nervous system by blocking adenosine, a chemical involved in promoting sleepiness. That’s part of the reason why a cup of coffee can make you feel more awake than focused.
Caffeine consumption can have both positive and negative effects. Coffee also contains antioxidants, and caffeine can temporarily increase alertness and improve concentration. For some people, that morning cup genuinely helps them feel more energized and productive.
On the flip side, too much caffeine can contribute to jitters, anxiety, a racing heart, and trouble sleeping. It can also temporarily raise blood pressure in some women with PMOS. How noticeable these effects are depends partly on how much caffeine you’re drinking, how quickly your body metabolizes it, and your individual sensitivity.
And finally, timing is equally important. Caffeine can remain in your system for hours, which means an afternoon pick-me-up may still be affecting you when you’re ready for bed. Sleep plays an important role in hormone and stress regulation, so protecting your sleep routine is especially important when you’re working on your overall PMOS management plan.
How Much Caffeine Is In Your Coffee?
One reason it can be difficult to figure out your ideal coffee intake is that “one coffee” or “one cup” doesn’t really tell you very much. The amount of caffeine can vary considerably depending on what you’re drinking and how it’s prepared.
In this episode, we discuss examples including:
- Black Tea: Around 46mg of caffeine
- Instant Coffee: Around 20 to 30mg of caffeine
- Espresso: A much smaller serving can still deliver a concentrated dose of caffeine
- Venti Coffee: Around 475mg of caffeine depending on the coffee shop
Remember: these aren’t universal numbers for every drink or brand. Brewing method, serving size, type of coffee or tea, and the specific product can all affect caffeine intake. That’s why it’s worth checking the nutrition information for your usual order rather than assuming every cup contains the same amount.
This can also help you put your daily intake into perspective! A morning coffee, another cup at work, and an afternoon tea can add up without necessarily feeling like you’re consuming a lot of caffeine.
Does Caffeine Affect PMOS (PCOS)?
The relationship between caffeine, coffee, and PMOS aren’t as simple as “coffee is good” or “coffee is bad” for PMOS.
Some research has found that caffeine can acutely affect insulin sensitivity and blood glucose. That’s worth paying attention to with PMOS, because insulin resistance is one of the most common symptoms in the condition. However, caffeine and coffee aren’t interchangeable in research. Coffee contains many compounds besides caffeine, and research examining habitual coffee consumption has produced more nuanced findings.
That’s why it’s important to never just look at one study and decide that every woman with PMOS needs to cut coffee out of their routine entirely.
You’ll also sometimes see sex hormone-binding globulin (SHBG) mentioned in conversations about coffee and PMOS. Women with PMOS commonly have lower SHBG levels, which can leave more testosterone circulating freely in the body. Some research has also associated coffee consumption with higher SHBG levels. That shouldn’t be considered a negative simply because caffeine is involved; higher SHBG levels could potentially be favorable in the context or elevated free androgens.
The bigger question is how caffeine fits into your overall picture. If it worsens your anxiety, disrupts your sleep, or leaves you cycling between a caffeine high and an energy crash? Reducing your intake may be worth trying.
Birth Control and Caffeine Metabolism
Here’s another factor you may not have considered: birth control can affect how quickly your body processes caffeine. In the study we discuss in the episode, caffeine remained in the body longer among participants taking oral contraceptives. The group using birth control took around 10 hours to metabolize caffeine compared with around 6 hours in the comparison group.
That doesn’t mean every woman with PMOS taking birth control will process caffeine on that exact timeline. Instead, it does illustrate why the same cup of coffee can affect two people very differently.
If you’re taking oral contraceptives and find yourself unusually sensitive to caffeine, or you notice that coffee earlier in the day seems to interfere with sleep at night, it may be worth experimenting with a smaller serving or an earlier caffeine cutoff.
Is Caffeine Bad For PCOS?
Not necessarily. As I mentioned above, whether caffeine works for you is an individualized question based on your body, symptoms, habits, and overall health. Rather than looking at coffee as “good” or “bad,” start paying attention to what happens after you drink it. You can use these questions as a quick caffeine self-assessment:
- How do I feel after drinking coffee? Energized and focused, or anxious, shaky and wired?
- Do I stay asleep throughout the night?
- How long does it usually take me to fall asleep?
- Do I wake up feeling naturally rested?
- Do I feel like I depend on caffeine every day just to function normally?
If you’re drinking coffee in the morning, sleeping well at night, and feeling steady throughout the day, your current intake may work for you! But if you’re exhausted when you wake up, depend on caffeine to get moving, crashing later, reaching for more caffeine, and then struggling to sleep? That’s a different pattern. Cutting back, or simply moving your caffeine earlier in the day, may help you determine whether it’s contributing to that cycle.
And you don’t have to go from several cups a day to zero overnight! Gradually reducing your serving size, replacing one cup with a lower-caffeine option, or pushing your first cup a little later can all make the transition more manageable.
Can Caffeine Cause Adrenal Fatigue?
You’ll often hear the term “adrenal fatigue” used to describe feeling chronically stressed, tired, burned out, or dependent on caffeine. However, adrenal fatigue actually isn’t commonly recognized as a medical diagnosis, and there’s no good evidence that everyday stress or coffee causes your adrenal glands to become “worn out.”
However, that doesn’t mean the symptoms you’re experiencing aren’t real. High caffeine intake can interfere with sleep, increase feelings of anxiety or jitteriness, and create a pattern where you use caffeine to compensate for exhaustion. If you’re already under a lot of stress and aren’t sleeping well, relying on more and more coffee can make it harder to identify what’s actually behind your fatigue.
PCOS Coffee Substitute Options
Want to cut back without completely giving up your morning ritual? You have several options, whether you’re looking for less caffeine or want to go caffeine-free entirely.
Mushroom Elixirs or Mushroom Coffee
Mushroom coffee and mushroom elixirs can be an option if you’re looking to change up your usual cup. Some mushroom coffee products contain regular coffee blended with mushroom extracts, which may result in less caffeine per serving than your usual coffee.
Just remember: “mushroom coffee” doesn’t automatically mean caffeine-free! Check the label so you know how much you’re actually getting. And of course, don’t assume a mushroom blend will directly balance PMOS hormones.
Teas
Tea is one of my favorite alternatives because you can choose from both caffeinated and caffeine-free varieties. Black and green teas do still contain caffeine, but they may provide less per serving than your usual coffee depending on the type and brewing method. Herbal teas can provide a completely different caffeine-free option for anyone who wants a warm drink without the stimulation.
If you’re trying to lower your caffeine intake gradually, swapping one of your daily coffees for tea can also be easier than trying to quit everything at once.
Decaf Coffee:
If you genuinely love the taste of coffee, not just the caffeine, decaf may be the easiest switch. Decaf coffee isn’t always completely caffeine-free, but it contains substantially less caffeine than regular coffee. That means you can keep the flavor and ritual of your morning cup while dramatically reducing your caffeine intake.
You can also try mixing regular and decaf coffee while you’re working on cutting back. Start with mostly regular coffee and gradually increase the properties of decaf until you find a level that feels good for you.
Chicory Coffee
Chicory coffee is made from roasted chicory root and is naturally caffeine-free. It has a rich, roasted flavor, so some people enjoy using it as a coffee substitute or mixing it with coffee to reduce the overall caffeine content of their cup.
Chicory root also contains inulin, a type of prebiotic fiber. However, more isn’t always better. Inulin can cause gas or digestive discomfort for some people, so start slowly if chicory is new to you.
Are You Cutting Back on Caffeine with PMOS (PCOS)?
You don’t necessarily need to quit coffee because you have PMOS. But you also don’t need to keep pushing through anxiety, crashes, or poor sleep just because coffee is part of your routine. Pay attention to your energy, mood, anxiety, and sleep for a week. if something feels off, experiment with drinking less, switching to a lower-caffeine option, or keeping caffeine to the morning.
And tell us in the comments: Are you cutting back on caffeine with PMOS, keeping your daily coffee ritual, or switching to something else? We’d love to hear what works for you!
Want more support with your PMOS journey? Join us in The Cysterhood, our community for women with PMOS learning how to manage their symptoms and build sustainable habits. And if you’re interested in learning more about what may be driving your symptoms, make sure to take my free “What’s Your PMOS Type?” quiz.
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While Tallene is a Registered Dietitian and Sirak a Personal Trainer, this podcast provides general information about PCOS. It is not meant to serve as fitness, nutrition or medical advice related to your individual needs. If you have questions, please talk to a medical professional. For our full privacy policy, please click on the following link: (bit.ly/PCOSPrivacyPolicy)
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