Appetite and the menstrual cycle: why you want to eat before your period
If every month, a week before your period, you “lose control” and then blame yourself—read this to the end. A regularly scheduled lapse is not weakness, but the luteal phase. During it, progesterone is high, metabolism speeds up by 100-300 kcal per day, serotonin is lower, and your body craves fast carbohydrates to raise it. This is physiology. You don’t fight it—you build your meals around it. The full section on the cycle is cycle and hormones.
What happens during the phases
During the follicular phase (approximately days 6-13), estrogen rises, insulin sensitivity is at its best of the month, appetite is steady, and you have energy. This is the week when a 16/8 eating window and intense workouts feel easy. After ovulation, estrogen drops, progesterone rises, and with it body temperature, energy expenditure, and appetite increase. Cravings for sweets during this phase are an attempt to raise serotonin levels. In the 2-4 days before menstruation, water retention and irritability are added. Then comes menstruation, a drop in both hormones, weakness, and iron loss.
Appetite and plate by phase
| Phase | Appetite | What to add | Window |
|---|---|---|---|
| Periods 1-5 | low-medium | iron: red meat, liver; salt | 12/12-14/10 |
| Follicular 6-13 | calm | regular plate, strict schedule possible | 16/8 |
| Ovulation 14-16 | calm | regular plate | 16/8 |
| Luteal 17-28 | high | fats and protein with dinner, magnesium, dark chocolate 85% | 14/10, no long fasts |
Why it is gentler on a low-carb diet
Cravings for sweets are largely caused by blood sugar swings: you eat fast carbohydrates, blood sugar rises, insulin drops, and two hours later you are hungry again. On a low-carb plate, there are no such swings, and luteal appetite changes from “I want a chocolate bar now” to “I want to eat more.” This is manageable: make dinner more substantial, increase the amount of fat, and shorten the window by two hours. Hunger-driven lapses go away for most women by the second or third cycle. How this relates to the window is explained in the article fasting and the cycle, while the basic principle of eating is on the method page.
What to do during the luteal phase
Add 200-300 kcal from fats and protein
Avocado, nuts, fatty fish, eggs. Not sweets—they will bring back the roller coaster. This compensates for the real increase in energy expenditure, not a “treat.”
Shorten the window by 2 hours
If you usually do 16/8—14/10 this week. Hunger during the luteal phase is harder to tolerate, and stubbornness here costs you a setback.
Magnesium in the evening
300-400 mg of magnesium citrate or glycinate reduces cravings for sweets and improves sleep. Check with your doctor if you take medication.
Don’t weigh yourself
Water retention during the luteal phase adds 1-2 kg. The number on the scale during these days says nothing about fat.
When Appetite Is More Than Just Your Cycle
If your craving for food lasts all month, not just a week, your cycle is not to blame. Look at your sleep (less than 7 hours raises ghrelin), protein (less than 1,2 g/kg means constant hunger), fasting insulin, and ferritin. Insulin resistance and low iron cause appetite and weakness that are easy to mistake for a “bad week.” We cover water and premenstrual swelling in the article PMS and Water Retention.
Frequently asked questions
How much food can be added before menstruation?
200-300 kcal from fats and protein. This covers the actual increase in expenditure during the luteal phase and does not slow progress.
Can I have chocolate?
Yes, 20-30 g of dark chocolate, 85% or higher. This provides magnesium and fats without blood sugar swings. Milk chocolate — no.
How many cycles until binge episodes stop?
For most people — by the second or third cycle of low-carb eating with a flexible window in the luteal phase.
Reviewed by Anastasia Zhukova, Fitness Trainer • Author of a Nutrition and Training System • Creator of an AI Personal Support Platform
A human has reviewed this material against the method and real client practice.