What to eat in each phase of your cycle

Key takeaways

• Your overall diet matters more than any phase tweak.
• Pair iron-rich foods with vitamin C, especially if your periods are heavy.
• Feeling hungrier before your period is common, and eating a bit more is fine.
• Calcium has some trial evidence for easing PMS symptoms.
• Seed cycling has not been tested in large, well-designed trials.

Food by phase at a glance

Days are for a 28-day cycle. Yours may be shorter or longer.

Do I need to eat differently in each phase?

Not much. A good everyday diet does most of the work, and phase tweaks are small extras on top of it.

Few studies have tested eating by phase directly. The ideas here come from what is known about each phase, such as blood loss on your period or extra hunger before it. So start with the basics: vegetables, fruit, whole grains, beans, enough protein and some healthy fats. Then use your phase as a nudge, not a rulebook.

What should I eat on my period?

Warm, simple meals with iron-rich foods, ideally paired with a source of vitamin C. You lose iron with blood, and heavy periods are a very common cause of iron deficiency anemia.¹

Good sources of iron include lentils, beans, dark-green leafy vegetables, fortified cereals, dried fruit and meat. Vitamin C helps your body absorb iron from plant foods,² so add peppers, tomatoes, citrus, kiwi or berries to the same meal. Tea, coffee and dairy can make iron harder to absorb, so have them between meals rather than with your most iron-rich one.¹

Warm food can also feel comforting when you are crampy or tired. If you often feel very tired or short of breath, or your periods are heavy, ask your doctor about a blood test before you take iron tablets.

What should I eat in the follicular phase?

Fresh, lighter meals with plenty of fiber. Many women have more energy after their period, so it is a good week to try new recipes.

Fill half your plate with vegetables, add a whole grain or beans, and keep some protein at each meal, especially if you train harder.

What should I eat around ovulation?

Plenty of vegetables, fiber and water. Keep meals colorful and simple, and drink regularly through the day.

Vegetable-heavy bowls, fish or beans, whole grains and fruit keep you full without feeling heavy. Drink more if you train hard or it is hot.

What should I eat before my period?

Fuller meals with protein, slow carbohydrates and magnesium-rich foods. If you are hungrier in these days, eating a bit more is reasonable.

A 2020 review found resting metabolism was slightly higher in the luteal phase than in the follicular phase, although the effect was small.³ The American College of Obstetricians and Gynecologists (ACOG) suggests a diet rich in complex carbohydrates for PMS, which may help with mood and food cravings. It also suggests less fat, salt and sugar, and avoiding caffeine and alcohol.⁴

Build meals around beans, oats, potatoes or whole grains, plus fish, eggs, tofu or chicken. Nuts, seeds, leafy greens and whole grains add magnesium.

Why do I crave sweet food before my period?

Food cravings are a recognized symptom of PMS,⁴ and your body may need slightly more energy in these days.³ Cravings are biology, not a lack of willpower.

Plan for them rather than fight them. Eat a proper lunch, add an afternoon snack, and pair something sweet with protein or fiber, such as yogurt with berries or an apple with nut butter. ACOG also suggests smaller meals more often, to keep your blood sugar steadier.⁴

Can calcium help with PMS?

It may. In a 1998 trial of nearly 500 women with moderate to severe PMS, taking 1,200 mg of calcium a day for three cycles cut total symptom scores by 48% from the start, compared with 30% on placebo.⁵

ACOG also says 1,200 mg of calcium a day can help reduce the physical and mood symptoms of PMS.⁴ Food comes first: yogurt, milk, cheese, fortified plant drinks, calcium-set tofu and leafy greens. Talk to your doctor before taking a supplement, especially if you are pregnant, take medication, or have had kidney problems.

Does seed cycling work?

There is no strong evidence that seed cycling balances your hormones. It has not been tested in large, well-designed trials.

Seed cycling means eating flax and pumpkin seeds in the first half of your cycle, and sesame and sunflower seeds in the second. A 2025 review found ten small studies with some promising signs, but its authors rated the evidence as moderate in quality and called for larger randomised trials. The review also allowed studies of the seeds on their own, not only of the phase timing.⁶ Seeds are still a good food on any day, with fiber, healthy fats and magnesium.

How do I put this into practice?

Keep your usual healthy meals, then change one or two things in each phase. Small, steady habits beat a strict plan.

Regime Longevity can do the planning for you. It builds a daily food plan for your phase, scans a photo of your meal for calories, nutrients and an inflammation score, and suggests recipes that leave out foods you dislike. You can also ask the AI concierge about your food.

Talk to a doctor or registered dietitian before taking supplements, especially if you are pregnant, take medication, or have a history of eating disorders. If tracking food ever feels stressful, step back and keep it simple.

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