Foods to Eat on Your Period: What to Eat to Feel Better Every Month

By BiteBrightly 6 June 2026: This post might contain affiliate links.

Your period is not just a reproductive event. It is a full-body hormonal shift that affects your energy, mood, pain levels, digestion, sleep, and appetite — and what you eat during this time has a meaningful, research-supported influence on how all of those things feel.

The week before and during your period, oestrogen and progesterone drop sharply. Prostaglandins — the inflammatory compounds that trigger uterine contractions — rise. Iron is lost through menstrual blood. Magnesium levels fall. Serotonin fluctuates with the hormonal changes. The body is doing significant work, and the food you give it either supports that work or compounds the difficulty.

This is not a guide about eating "perfectly" on your period. It is a practical, evidence-based guide to the specific foods that reduce cramping, support energy, stabilise mood, and help you feel as well as possible during the days that most commonly feel the hardest.

Key Takeaways

• Prostaglandins are the primary drivers of menstrual cramps — omega-3 fatty acids from oily fish, walnuts, and flaxseed directly compete with the omega-6 arachidonic acid that produces pro-inflammatory prostaglandins, reducing their intensity

• Magnesium deficiency is associated with more severe PMS symptoms, period pain, and mood changes — magnesium-rich foods (dark leafy greens, pumpkin seeds, dark chocolate) are among the most practically useful dietary additions during menstruation

• Research published in Obstetrics and Gynecology confirmed that women with higher dietary omega-3 intake experienced significantly less menstrual pain than those with lower omega-3 intake — establishing a direct dietary mechanism for cramp reduction

• Iron is lost through menstrual blood — the average menstrual cycle involves 30–80ml of blood loss, providing 15–35mg of iron loss; replacing this through iron-rich foods alongside vitamin C for absorption is genuinely important for energy during and after menstruation

• Blood sugar instability during the luteal phase (the week before your period) amplifies mood symptoms including irritability, anxiety, and low mood — complex carbohydrates and adequate protein stabilise the blood sugar fluctuations that worsen these symptoms

• A clinical trial confirmed that magnesium supplementation significantly reduced the severity of PMS symptoms including mood changes, bloating, and physical discomfort — supporting the role of dietary magnesium in period symptom management

Understanding What Happens Hormonally — and Why Food Matters

The Prostaglandin-Cramp Connection

Cramps are caused by prostaglandins — specifically PGE2 and PGF2α — which trigger uterine muscle contractions to help shed the uterine lining. The more prostaglandins produced, the stronger the contractions, and the more pain experienced.

Prostaglandins are produced from arachidonic acid — an omega-6 fatty acid found in animal fats and processed seed oils. A diet high in omega-6 and low in omega-3 provides abundant raw material for pro-inflammatory prostaglandin production. Omega-3 fatty acids from oily fish, walnuts, chia seeds, and flaxseed compete with arachidonic acid for the same enzymes — reducing the total prostaglandin output and therefore the intensity of cramps.

This is why omega-3 foods are the single most evidence-supported dietary intervention for menstrual pain.

The Magnesium-PMS Connection

Magnesium acts as a natural calcium antagonist at muscle cell receptors — calcium triggers muscle contraction, magnesium enables relaxation. In the uterine smooth muscle specifically, adequate magnesium levels reduce the intensity and frequency of the prostaglandin-driven contractions that cause cramps.

Magnesium also activates GABA receptors in the brain — the inhibitory neurotransmitter system that produces calm and reduces anxiety. Low magnesium is associated with heightened anxiety, poor sleep, and increased sensitivity to pain — all of which are common period symptoms. Research has found that women with PMS have significantly lower magnesium levels than those without.

The Iron-Energy Connection

A full menstrual cycle involving 30–80ml of blood loss represents 15–35mg of iron lost. For context, the recommended daily iron intake for women of reproductive age is 18mg. The cumulative iron depletion from menstruation — particularly for women with heavy periods — is one of the most common and most commonly undiagnosed contributors to the fatigue that accompanies and follows menstruation.

Eating iron-rich foods during and after your period, alongside vitamin C to enhance absorption, replaces this loss and maintains the haemoglobin production that determines energy and cognitive function.

The Best Foods to Eat on Your Period

Oily Fish — Salmon, Mackerel, Sardines

Oily fish is the most evidence-supported food for period pain. Salmon, mackerel, sardines, and anchovies provide EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) — the long-chain omega-3 fatty acids that directly compete with arachidonic acid for prostaglandin-producing enzymes.

Research published in the Journal of Psychosomatic Obstetrics and Gynaecology found that women who consumed omega-3 rich fish regularly had significantly less menstrual pain, required less pain medication, and reported better overall wellbeing during menstruation than those with low omega-3 intake.

Two to three servings of oily fish per week in the days leading up to and during your period provides a meaningful reduction in prostaglandin production. Sardines on whole grain toast, salmon with roasted vegetables, or mackerel in a grain bowl are all practical, accessible forms.

Practical tip: Tinned sardines and mackerel provide the same omega-3 content as fresh fish at a fraction of the cost. Tinned in olive oil or water (not sunflower oil) is the best choice — sunflower oil adds pro-inflammatory omega-6.

Dark Leafy Greens — Spinach, Kale, Swiss Chard

Dark leafy greens provide the triple benefit of iron, magnesium, and calcium — three minerals directly relevant to period health. One cup of cooked spinach provides 157mg of magnesium (39% of the daily RDA), 3.7mg of iron, and 245mg of calcium.

The vitamin C in dark leafy greens also enhances the absorption of the non-haem iron they contain — a convenient natural pairing. Eating spinach alongside a squeeze of lemon juice increases iron absorption significantly.

The folate in dark leafy greens supports the cell renewal that occurs during menstruation, and the vitamin K supports blood clotting regulation.

Practical tip: Wilt a large handful of spinach into any warm meal — soups, lentil dishes, scrambled eggs, pasta. Cooking spinach dramatically increases the usable nutrients per serving because it condenses the volume significantly.

Pumpkin Seeds

Pumpkin seeds are one of the most nutrient-dense period foods available in a small, convenient format. Two tablespoons provide 156mg of magnesium (39% of the daily RDA), 2.5mg of iron, 2.2mg of zinc, and 7g of protein.

The zinc in pumpkin seeds is particularly relevant during menstruation — zinc supports the immune function that can be temporarily suppressed by the inflammatory prostaglandin response, and research has found that women with dysmenorrhoea (painful periods) tend to have lower zinc levels than those without.

Practical tip: Two tablespoons of pumpkin seeds scattered on oatmeal, yogurt, or a salad daily during your period provides a meaningful contribution to magnesium and zinc intake with minimal effort.

Dark Chocolate (70%+ Cacao)

Dark chocolate is both a practical comfort food during menstruation and a genuinely useful nutritional source. A 28g serving of 70%+ dark chocolate provides 64mg of magnesium, 3.4mg of iron, and significant flavanols with anti-inflammatory activity.

The magnesium in dark chocolate supports muscle relaxation and GABA receptor activation — reducing uterine cramping and the anxiety sensitivity that accompanies PMS. The iron contributes to the replenishment of menstrual blood loss. And the flavanols provide antioxidant activity that reduces the oxidative stress associated with elevated prostaglandin levels.

This is not a rationalisation for eating chocolate — it is accurate nutritional information. Dark chocolate (70%+ cacao) is genuinely useful during menstruation. Milk chocolate, with its much lower cacao content and higher sugar content, does not provide the same benefits.

Practical tip: One square of 85%+ dark chocolate alongside a cup of chamomile tea in the evening is one of the most genuinely therapeutic period rituals available — combining dark chocolate's magnesium with chamomile's mild antispasmodic activity.

Lentils and Legumes

Lentils, chickpeas, and black beans provide substantial plant-based iron alongside fibre, protein, and folate. One cup of cooked lentils provides 6.6mg of iron — 37% of the recommended daily intake for women — alongside 18g of protein and 15.6g of fibre.

The fibre in legumes is particularly relevant to period health through a mechanism most guides overlook: the gut microbiome metabolises excess oestrogen in the colon, and adequate dietary fibre supports this oestrogen processing. Women with higher fibre intake tend to have lower circulating oestrogen levels — potentially reducing the hormonal amplitude that contributes to more severe PMS symptoms.

Lentil soup, chickpea curry, black bean bowls, and hummus are all practical, accessible ways to increase iron and fibre intake during your period without requiring expensive or specialist ingredients.

Bananas

Bananas provide vitamin B6 and potassium — two nutrients with specific relevance to period symptoms. Vitamin B6 is a cofactor for serotonin and dopamine synthesis — the neurotransmitters whose fluctuation with falling oestrogen contributes significantly to the mood changes (irritability, low mood, anxiety) of PMS. Higher dietary B6 is associated with lower severity of PMS mood symptoms in multiple studies.

Potassium from bananas also helps manage the water retention and bloating that many women experience in the days before and during their period — potassium counterbalances the sodium retention that drives period-related bloating.

One medium banana provides 0.4mg of B6 (22% of the daily recommended intake) and 422mg of potassium.

Ginger

Ginger is one of the most evidence-supported natural interventions for menstrual pain. Ginger's active compounds — gingerols and shogaols — directly inhibit COX-2 enzyme activity and prostaglandin synthesis through the same mechanism as NSAIDs (non-steroidal anti-inflammatory drugs) like ibuprofen. They also inhibit leukotriene synthesis — another inflammatory pathway involved in period pain.

A randomised controlled trial published in the Journal of Alternative and Complementary Medicine found that ginger was as effective as ibuprofen for reducing menstrual pain in women with primary dysmenorrhoea — a finding replicated in multiple subsequent trials.

The clinical dose used in research is typically 250mg of ginger powder (approximately ½ teaspoon) taken 3–4 times daily during the first 3 days of menstruation. Fresh ginger in hot water with lemon provides a meaningful anti-inflammatory dose in an accessible, pleasant format.

Practical tip: Fresh ginger grated into hot water with lemon and honey is the simplest and most therapeutic period drink available — providing anti-inflammatory gingerols, vitamin C from the lemon, and the calming of warm liquid on cramping muscles.

Turmeric

Turmeric's active compound curcumin inhibits NF-kB — the master inflammatory transcription factor that drives prostaglandin production. Research has found that curcumin supplementation reduces the severity of PMS symptoms including menstrual pain, mood changes, and physical discomfort.

The essential pairing: Turmeric must be taken with black pepper. Piperine in black pepper increases curcumin absorption by up to 2,000% — without black pepper, most of the curcumin passes through unabsorbed. This is the single most important practical detail about using turmeric therapeutically.

Turmeric golden milk — warm oat milk with turmeric, black pepper, cinnamon, and honey — is the most pleasant and most bioavailable way to use turmeric during your period.

Oats

Oats provide complex carbohydrates with a moderate glycemic index (GI 55), beta-glucan soluble fibre, and meaningful iron (3.4mg per cup dry). The complex carbohydrate release from oats helps stabilise the blood sugar fluctuations that amplify PMS mood symptoms — providing the sustained serotonin precursor supply that the brain needs during the hormonal changes of the luteal phase and menstruation.

Oats also provide tryptophan — the amino acid precursor to serotonin — alongside the complex carbohydrates that enhance tryptophan's uptake into the brain. This combination directly supports the serotonin production that falling oestrogen undermines during PMS.

Chamomile Tea

Chamomile contains apigenin — a flavonoid with antispasmodic activity that directly relaxes uterine smooth muscle. Research has found that chamomile consumption inhibits prostaglandin production and reduces the intensity of uterine contractions.

Chamomile also binds to GABA receptors — producing the calming effect that makes it genuinely useful for the anxiety and sleep disruption that can accompany PMS and menstruation.

Two to three cups of chamomile tea daily in the days before and during your period is one of the simplest, most accessible, and most evidence-supported period support habits available.

What to Reduce During Your Period

Sugar and Refined Carbohydrates

Refined sugar and high-GI carbohydrates spike blood glucose and then cause it to crash — amplifying the blood sugar instability that worsens mood changes, fatigue, and cravings during menstruation. The cortisol released in response to low blood glucose further suppresses progesterone and amplifies the hormonal disruption.

Reducing added sugar and refined carbohydrates during the week before and during your period — replacing them with complex carbohydrates, legumes, and fruit — meaningfully stabilises the energy and mood fluctuations that many women experience as inevitable but are largely dietary.

Excess Salt

Salt promotes water retention through sodium's osmotic effect on fluid balance. Excess sodium intake in the days before your period amplifies the bloating and water retention that are already driven by hormonal shifts. Cooking meals at home from whole ingredients rather than eating processed foods (which contain the majority of dietary sodium for most people) is the most effective way to moderate sodium without requiring careful tracking.

Excess Caffeine

Caffeine increases cortisol and constricts blood vessels — both of which can worsen period pain and contribute to the anxiety and sleep disruption that accompany PMS. This does not mean eliminating caffeine entirely (the headaches from caffeine withdrawal can compound period discomfort). It means moderating intake and perhaps switching one daily coffee for ginger tea, chamomile, or warm golden milk during the days of heaviest symptoms.

Alcohol

Alcohol disrupts sleep architecture, increases systemic inflammation, depletes B vitamins, and destabilises blood sugar — all of which worsen period symptoms. It also interferes with the liver's clearance of oestrogen, potentially amplifying hormonal fluctuations. Reducing or avoiding alcohol in the week before and during your period consistently reduces the severity of PMS mood symptoms and period-related fatigue.

A Day of Eating for Period Support

Breakfast: Overnight oats with pumpkin seeds, chia seeds, banana, and a drizzle of almond butter. The oats provide complex carbohydrate and tryptophan for serotonin production. The pumpkin seeds provide magnesium and zinc. The banana provides B6 for mood neurotransmitters. The chia seeds provide plant omega-3.

Mid-morning: Ginger lemon tea — fresh ginger grated into hot water with lemon juice and honey. The most practical anti-inflammatory period drink available.

Lunch: Lentil soup with wilted spinach and a squeeze of lemon (vitamin C to enhance iron absorption). Or a large salad with tinned sardines, dark leafy greens, cherry tomatoes, and olive oil dressing.

Snack: Two squares of 85%+ dark chocolate and a handful of walnuts. Magnesium from the chocolate, omega-3 from the walnuts.

Dinner: Baked salmon with roasted sweet potato and steamed broccoli. The salmon provides EPA/DHA omega-3 for prostaglandin reduction. The sweet potato provides B6. The broccoli provides iron and vitamin C.

Evening: Chamomile tea with warm turmeric golden milk (oat milk, turmeric, black pepper, cinnamon, honey). Chamomile apigenin relaxes uterine muscle. Turmeric curcumin inhibits NF-kB inflammation. Black pepper enables curcumin absorption.

Frequently Asked Questions

How early should I start eating these foods before my period?

The most effective approach is starting 5–7 days before your period is due — during the late luteal phase when prostaglandins begin to rise and PMS symptoms typically start. Omega-3 fatty acids need consistent intake over days to weeks to meaningfully shift the ratio of prostaglandin precursors available. Magnesium-rich foods are beneficial throughout the month but particularly during this window. The ginger and chamomile are most useful during the first 2–3 days of active menstruation when cramping is typically most intense.

Can diet completely eliminate period pain?

Diet can meaningfully reduce period pain for many women — particularly pain driven by prostaglandin production, which is directly influenced by dietary omega-3:omega-6 ratio, magnesium status, and anti-inflammatory compound intake. However, period pain has multiple causes including endometriosis, fibroids, and adenomyosis, which require medical diagnosis and treatment beyond dietary management. If period pain is severe, worsening, or significantly affecting your quality of life, please consult a gynaecologist. Diet supports wellbeing — it does not replace medical assessment of significant symptoms.

What about iron supplements during menstruation?

For women with heavy periods, dietary iron may not be sufficient to replace menstrual blood loss — particularly if symptoms of iron deficiency (fatigue, breathlessness, poor concentration, pale skin) are present. A blood test measuring serum ferritin (the most reliable marker of iron stores) is the best way to assess whether supplementation is needed. This should be done by your GP or healthcare provider — iron supplementation at high doses without medical guidance carries risks, and the correct dose depends on individual deficiency status.

Why do I crave sugar and chocolate before my period?

The drop in serotonin associated with falling oestrogen in the luteal phase triggers cravings for foods that rapidly raise serotonin — primarily carbohydrates and sugar, which boost tryptophan uptake and temporary serotonin production. The magnesium drop before menstruation drives chocolate cravings specifically — the body is seeking magnesium. Understanding these cravings as physiological rather than lack of willpower is both more accurate and more useful. Addressing the underlying mechanisms (stabilising blood sugar with complex carbohydrates, ensuring adequate magnesium from food) reduces the intensity of these cravings rather than requiring willpower to resist them.

References and Further Reading

1. Harel Z et al. — American Journal of Obstetrics and Gynecology (1996) — Supplementation with omega-3 polyunsaturated fatty acids in the management of dysmenorrhoea Randomised controlled trial confirming that omega-3 supplementation significantly reduced menstrual pain and analgesic use compared to placebo — establishing the direct dietary mechanism for cramp reduction.

2. Proctor M and Murphy P — Cochrane Database (2001) — Herbal and dietary therapies for primary and secondary dysmenorrhoea Systematic review confirming that magnesium supplementation significantly reduced the severity of dysmenorrhoea and PMS symptoms across multiple controlled trials.

3. Ozgoli G et al. — Journal of Alternative and Complementary Medicine (2009) — Comparison of effects of ginger, mefenamic acid, and ibuprofen on pain in women with primary dysmenorrhoea Randomised controlled trial finding that 250mg ginger powder 4 times daily was as effective as ibuprofen and mefenamic acid for reducing menstrual pain in women with primary dysmenorrhoea.

4. Bertone-Johnson ER et al. — American Journal of Clinical Nutrition (2005) — Calcium and vitamin D intake and risk of incident premenstrual syndrome Large prospective cohort study confirming that higher dietary calcium and vitamin D intake is associated with significantly lower risk of PMS — establishing the nutritional basis for targeting these micronutrients during the luteal phase.

About the Author

I'm Judith, a wellness enthusiast and Applied Bio Sciences and Biotechnology graduate behind BiteBrightly. With a deep-rooted belief in the healing power of food, my nutrition journey began with a personal transformation — I improved my eyesight through targeted dietary changes. This life-changing experience sparked my mission to empower others by sharing evidence-based insights into food as medicine.

Follow me on Pinterest for daily health tips, recipes, and wellness inspiration.

Important Notice: The information in this article is for educational purposes only and is not intended as medical advice. I am not a medical doctor, gynaecologist, or registered dietitian. Period pain, PMS, and menstrual symptoms exist on a wide spectrum and can be symptoms of underlying conditions including endometriosis, fibroids, polycystic ovary syndrome (PCOS), and adenomyosis that require professional diagnosis and treatment. If you experience severe, worsening, or debilitating menstrual symptoms, please consult a qualified healthcare provider. Dietary changes complement — but do not replace — appropriate medical care. These statements have not been evaluated by the FDA.

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