It is 4pm, six days before your period, and the thought of a cookie has stopped being a thought and become a plan. You were not hungry an hour ago. You are not exactly hungry now. You just want sugar, specifically, and you want it soon.
Sugar cravings before your period are so common that they sit on the official PMS symptom lists next to bloating and irritability. They are also more interesting than "hormones, shrug". Here is what the research actually says, including the parts that surprised us.
The hormone story behind sugar cravings before your period
The week before your period is the late luteal phase. Progesterone has been high, estrogen has had a second smaller rise, and in the final days both drop sharply. Two things ride along with that drop.
The first is serotonin. Cleveland Clinic explains that serotonin tends to dip in the luteal phase, and that sweet foods give your brain's reward system and your blood sugar a quick lift, which is why the craving points at sugar rather than, say, broccoli. Your brain is reaching for the fastest mood tool on the shelf.
The second is that your body may be running slightly warmer. A 2020 meta-analysis of 26 studies covering 318 women found a small but real rise in resting metabolic rate in the luteal phase. The effect is modest, and it was smaller and no longer statistically significant in studies done after 2000, so hold it loosely. But a body burning slightly more fuel and a brain short on serotonin is a decent recipe for wanting a brownie.
Do you actually eat more before your period?
Probably a bit, but less than the craving suggests. A 2025 meta-analysis in Nutrition Reviews pooled 15 datasets covering 330 women and found energy intake was significantly higher in the luteal phase than in the follicular phase. An earlier 2023 narrative review in the same journal put the difference in the better-controlled studies somewhere between 159 and 529 kcal a day, and then spent most of its length explaining why the studies disagree with each other.
The one that made us rethink things is the BioCycle study. It followed 259 healthy women for up to two cycles with repeated dietary recalls and craving questionnaires. Women reported more cravings in the luteal phase and ate more protein, particularly animal protein, but their mean energy intake was similar across the cycle. Cravings went up. Total eating, on average, did not. The urge is loud; the behaviour is smaller than it feels.
Why it is chocolate, specifically
Here is the surprise. When researchers asked Spanish and American women when they craved chocolate, 40% of the American women said "around my period" without being prompted. Only 4% of the Spanish women did. Asked directly, it was 60% against 24%. Same biology, very different answer. The authors concluded the link between chocolate and periods is at least partly cultural: we crave what we have been told we crave. That does not make the craving fake. It means the sugar part is biology and the chocolate part might be your upbringing.
We make chocolate for a living and we still think that finding is fair.
What may help with sugar cravings before your period
Eat before you are ravenous. The craving hits hardest on an empty stomach in the late afternoon. A proper lunch with protein and fibre blunts the 4pm spike. Our guide to PMS foods has the week-before plan.
Pair the sugar with something. Fruit with nut butter, yoghurt with honey, a square of dark chocolate after a meal rather than instead of one. Slower rise, softer crash, fewer repeats.
Do not fight it with willpower alone. Every study above says the drive is physiological. Planning a treat into the day beats a stand-off you lose at 9pm.
Sleep. Short nights make everyone crave sugar, cycle or no cycle. Stack that on the luteal phase and the cookie wins.
What we make and why
We got tired of the choice between a candy bar and pretending we did not want one. So we make a dark chocolate bar for the days around your period: real chocolate, with magnesium and other functional ingredients, in a pouch of 8 bars so there is one for each day of the week you actually need it. It is made for your cycle and it supports PMS relief*, which in practice means the craving gets answered with something built for the reason it exists. If you are not sure when your craving days fall, the Period Type quiz maps them.
The honest limitation
We cannot tell you that dark chocolate is "better" for cravings than a cookie in any study we can find. Nobody has run that trial. What we can say is that the craving is real, it peaks in the last week of the cycle, and it is more about mood than fuel. If the cravings arrive on the same days as a short fuse, our piece on mood swings before your period covers the serotonin side in more depth.
Print our free PMS week meal plan: five days of meals built from calcium and magnesium foods, plus a grocery list. 1 page, PDF, no email needed.
Download the PDFSources
- Cleveland Clinic: Cause of period cravings and how to manage them
- Benton MJ et al. 2020, Effect of menstrual cycle on resting metabolism: systematic review and meta-analysis, PLOS One (PubMed)
- Tucker JAL et al. 2025, The effect of the menstrual cycle on energy intake: systematic review and meta-analysis, Nutrition Reviews
- Rogan MM, Black KE 2023, Dietary energy intake across the menstrual cycle: a narrative review, Nutrition Reviews
- Gorczyca AM et al. 2016, Changes in macronutrient, micronutrient, and food group intakes throughout the menstrual cycle (BioCycle), Eur J Nutr (PubMed)
- Zellner DA et al. 2004, Chocolate craving and the menstrual cycle, Appetite
When to talk to a doctor
A sweet tooth before your period is normal. See a doctor if:
- pain stops you doing your normal day;
- you bleed through a pad or tampon every hour;
- pain suddenly got much worse than your usual;
- you have pain with a fever.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
