What to Eat During Your Period: Nutrition for the Menstrual Phase

The menstrual phase — your period — comes with its own nutritional priorities, shaped by two things: you are actively losing blood (and with it, iron), and prostaglandins are driving both cramping and, often, digestive changes. Our period calculator can help you see when it's coming so you can plan ahead. What you eat will not eliminate a period, but it can meaningfully affect how you feel through it.

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Replenish iron

Blood loss during menstruation is the most significant recurring source of iron loss for most people who menstruate, and menstruating women require roughly twice the iron of men the same age. Low iron shows up as fatigue, dizziness, shortness of breath, and difficulty concentrating — symptoms that are frequently written off as normal period tiredness when they may be at least partly addressable.

Good sources to prioritize during your period:

• Red meat, poultry, and fish (heme iron, most easily absorbed)
• Lentils, chickpeas, and other legumes
• Spinach and other dark leafy greens
• Fortified cereals and dark chocolate

Pairing plant-based (non-heme) iron sources with vitamin C — think spinach with citrus, or lentils with tomatoes — meaningfully improves how much iron your body actually absorbs, per Harvard's T.H. Chan School of Public Health. Tea and coffee, on the other hand, can inhibit iron absorption if consumed in the same meal, so spacing them apart from iron-rich meals is a small adjustment worth making.

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Lean on anti-inflammatory foods

Prostaglandins drive cramping — see how to prevent and ease period cramps for the fuller picture beyond food — and diets richer in anti-inflammatory foods are associated with milder symptoms over time:

• Fatty fish (salmon, mackerel, sardines) for omega-3s
• Berries, leafy greens, and colorful vegetables for antioxidants
• Walnuts, flaxseed, and chia seeds as plant-based omega-3 sources
• Ginger and turmeric, both with some evidence for reducing inflammation and nausea

This is a cumulative, longer-term dietary pattern rather than a same-day fix — but building it in across your period, and ideally in the days leading up to it, can meaningfully soften symptom intensity over a few cycles.

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Support digestion

Prostaglandins do not just act on the uterus — they can affect the gut too, which is why bloating, constipation, or looser stools are common during menstruation.

• Fiber (whole grains, vegetables, fruit) supports regular digestion, but introduce it gradually if bloating is already a problem
• Water — dehydration tends to worsen both bloating and cramping, and blood loss increases fluid needs slightly
• Peppermint or ginger tea can ease nausea and digestive discomfort for many people

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Work with cravings, don't fight them

Increased appetite and cravings — particularly for carbohydrates — are a real physiological response to hormonal shifts and prostaglandin activity, not a failure of self-control. Carbohydrates support serotonin production, which is part of why they feel so appealing when mood dips.

Rather than restricting, aim for satisfying versions: whole grains, dark chocolate, sweet potatoes, oats. These provide the comfort and energy your body is asking for alongside fiber and micronutrients, rather than a sharp blood sugar spike and crash.

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What to ease up on, not eliminate

Nothing needs to be off-limits, but many people notice a real difference from reducing:

• Salt — worsens bloating and fluid retention
• Caffeine — can intensify cramping and disrupt sleep at a time when rest matters more
• Alcohol — disrupts sleep and can worsen mood-related symptoms

Reducing intake for the first few days of your period, rather than cutting these out entirely, is a realistic and sustainable approach for most people.

If you've come across seed cycling as a way to eat for your cycle, the seeds it recommends are genuinely nutritious — just worth knowing the specific rotation protocol isn't proven the way the priorities above are.

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This article is educational and does not constitute medical advice. If you have concerns about heavy bleeding, iron deficiency, or persistent digestive symptoms, please consult a qualified healthcare professional.