Overview
Menstrual cramps (primary dysmenorrhea) occur when prostaglandins trigger uterine muscle contractions and inflammation. Research shows that some dietary patterns and specific nutrients may influence inflammation, muscle tension, hydration, and overall menstrual comfort. These effects vary by individual, and no single food has been proven to eliminate cramps. The evidence supports several nutrient-focused approaches, while other commonly searched foods have no high-quality evidence.
Key Takeaways
- Prostaglandins drive menstrual pain by increasing inflammation and uterine contractions.
- Omega-3 fatty acids, magnesium, calcium, vitamin D, and hydration have evidence supporting potential benefits for menstrual comfort.
- Iron helps restore levels lost during menstrual bleeding.
- Many commonly searched foods (bananas, eggs, peanut butter, pineapple, chocolate) lack high-quality evidence for relieving cramps.
- Diet may support comfort but does not replace medical treatment.
- Symptoms such as heavy bleeding, dizziness, fever, or foul-smelling discharge warrant medical evaluation.
What Causes Menstrual Cramps?
Menstrual cramps are primarily driven by prostaglandins—chemicals that regulate inflammation and cause the uterus to contract. Higher levels are associated with stronger pain. Secondary dysmenorrhea can be caused by medical conditions such as endometriosis or fibroids.
Evidence-Supported Dietary Approaches
Omega-3 Fatty Acids
Studies show that omega-3 fats can reduce inflammatory prostaglandins and may help ease the severity of menstrual pain.
Magnesium
Magnesium supports normal muscle and nerve function. Evidence shows that adequate magnesium intake helps regulate muscle contraction and relaxation.
Calcium and Vitamin D
Calcium contributes to normal muscle contraction and relaxation. Clinical trials demonstrate that calcium supplementation may reduce the severity of premenstrual symptoms. Vitamin D supports calcium absorption.
Iron
Menstruation involves iron loss, and iron-rich foods help restore normal levels.
Hydration
Good hydration supports digestion and fluid balance.
Dietary Patterns
Research shows associations between certain dietary patterns and menstrual symptoms. These studies observe correlations but do not confirm direct effects on cramps.
Evidence Summary Table
| Nutrient / Approach | Evidence Supports Benefit | Notes |
| Omega-3 fatty acids | Yes | Shown to reduce inflammatory prostaglandins. |
| Magnesium | Yes | Supports muscle relaxation. |
| Calcium | Yes | May reduce symptom severity. |
| Vitamin D | Yes | Supports calcium absorption. |
| Iron | Yes | Replaces iron lost during bleeding. |
| Hydration | Yes | Supports normal body function. |
| Specific foods (bananas, eggs, peanut butter, pineapple, chocolate) | No | No high-quality evidence for menstrual relief. |
| Timing adjustments (pre-period changes) | No | No high-quality evidence. |
Claims With Limited or No High-Quality Evidence
The following have insufficient or preliminary support regarding menstrual cramp relief:
- Bananas
- Eggs
- Peanut butter
- Dark chocolate
- Pineapple/bromelain (only general anti-inflammatory findings; menstrual benefits limited)
- Milk chocolate
- Specific timing of dietary adjustments
- Direct effects of refined carbohydrates, salt, caffeine, or alcohol on cramp severity
If not listed in the evidence-supported section, evidence is insufficient, low-quality, or unrelated to menstrual pain.
When to See a Doctor
Seek medical evaluation if you experience:
- Menstrual cramps that regularly disrupt school, work, or daily activities
- Very heavy bleeding, including bleeding that causes dizziness or faintness
- Bleeding patterns that suggest heavy menstrual bleeding
- Symptoms suggesting possible infection, such as fever or foul-smelling discharge
These findings reflect accepted clinical guidance from authoritative organizations.
Frequently Asked Questions
Do bananas help with period cramps?
There is no high-quality evidence supporting this.
Are eggs good for period cramps?
There is no high-quality evidence supporting this.
Is oatmeal good for period cramps?
Oatmeal contains magnesium and fiber, but there is no direct evidence that it reduces menstrual pain.
Does peanut butter help with cramps?
There is no high-quality evidence supporting this.
Does dark chocolate help menstrual cramps?
Dark chocolate contains magnesium and antioxidants, but evidence directly linking it to cramp relief is limited.
Does pineapple help with menstrual cramps?
Bromelain shows general anti-inflammatory effects, but evidence for menstrual pain is limited.
Can hydration affect cramps?
Adequate hydration supports normal body function and may reduce discomfort associated with dehydration.
What nutrients have evidence for helping menstrual discomfort?
Omega-3 fatty acids, magnesium, calcium, and vitamin D have supportive evidence.
Is iron important during menstruation?
Iron helps replace what is lost during bleeding and supports normal energy levels.
Can food replace medical treatment for menstrual cramps?
No. Diet may support comfort, but it does not replace evidence-based medical treatments.
What should I eat before my period to prevent cramps?
There is no high-quality evidence that specific pre-period foods prevent cramps.
What foods are scientifically supported for menstrual comfort?
Nutrient-focused categories—omega-3s, magnesium, calcium, and hydration—have supporting evidence.
How do omega-3s help?
Research shows omega-3 fatty acids can reduce inflammatory prostaglandins.
Do plant-forward diets help period symptoms?
Research shows associations between dietary patterns and menstrual symptoms, though evidence does not prove direct cause-and-effect.
What foods worsen cramps?
There is no strong evidence that specific foods reliably worsen menstrual cramps.
Is iron important during menstruation?
Yes. Iron helps replace what is lost during bleeding.
APA Reference List
Barnard, N. D. (2000). Diet and sex-hormone binding globulin, dysmenorrhea, and premenstrual symptoms. Obstetrics & Gynecology, 95(2), 245–250. https://pubmed.ncbi.nlm.nih.gov/10674588/
Better Health Channel. (n.d.). Calcium. State Government of Victoria, Australia. https://www.betterhealth.vic.gov.au/health/healthyliving/calcium
Centers for Disease Control and Prevention. (2024, May 15). About heavy menstrual bleeding. U.S. Department of Health and Human Services. https://www.cdc.gov/female-blood-disorders/about/heavy-menstrual-bleeding.html
Centers for Disease Control and Prevention. (2024, May 15). Signs and symptoms of bleeding disorders in women. U.S. Department of Health and Human Services. https://www.cdc.gov/female-blood-disorders/signs-symptoms/index.html
Ciołek, A., Szydłowska, I., & Oniszczenko, W. (2023). An assessment of women’s knowledge of the menstrual cycle and its association with diet and dysmenorrhea. Nutrients, 15(1), 69. https://www.mdpi.com/2072-6643/16/1/69
Cleveland Clinic. (2025, June 24). Foods to eat (and avoid) during your period. Cleveland Clinic Health Essentials. https://health.clevelandclinic.org/what-should-you-eat-when-youre-on-your-period
Colletti, A., Berti, C., & Ghelfi, F. (2024). An evaluation of the effects of pineapple-extract and bromelain on pain and inflammation: A review of clinical applications. Life, 14(x), Article 10974198. https://pmc.ncbi.nlm.nih.gov/articles/PMC10974198/
Effect of pineapple juice on reducing menstrual pain in adolescents in SMPN 3 Jember. (n.d.). In ResearchGate. https://www.researchgate.net/publication/379452742_Effect_of_Pineapple_Juice_on_Reducing_Menstrual_Pain_in_Adolecents_in_SMPN_3_Jember
Goldin, B. R., Adlercreutz, H., Gorbach, S. L., Warram, J. H., Dwyer, J. T., Swenson, L., & Woods, M. N. (1994). The effect of dietary fat and fiber on serum estrogen concentrations in premenopausal women under controlled dietary conditions. Cancer, 74(3 Suppl), 1125–1131. https://acsjournals.onlinelibrary.wiley.com/doi/10.1002/1097-0142(19940801)74:3%2B%3C1125::AID-CNCR2820741521%3E3.0.CO;2-5
Güzeldere, H. K. B., et al. (2024). The relationship between dietary habits and menstruation problems in women: A cross-sectional study. BMC Women’s Health, 24, 3235. https://pmc.ncbi.nlm.nih.gov/articles/PMC11241871/
Haghighatdoost, F., Bellissimo, N., de Zepetnek, J. O. T., & Rouhani, M. H. (2017). Association of vegetarian diet with inflammatory biomarkers: A systematic review and meta-analysis. Public Health Nutrition, 20(15), 2713–2721. https://pubmed.ncbi.nlm.nih.gov/28836492/
Harvard T. H. Chan School of Public Health. (2017, September 28). The importance of hydration. The Nutrition Source. https://hsph.harvard.edu/news/the-importance-of-hydration/
Harvard T. H. Chan School of Public Health. (n.d.). How much water do you need? The Nutrition Source. https://nutritionsource.hsph.harvard.edu/water/
Healthline. (2023, February 6). Iron-deficiency anemia: Symptoms, causes, and more. https://www.healthline.com/health/iron-deficiency-anemia
Healthline. (2024, August 1). What to eat during your period: Foods for cramps, mood, and more. https://www.healthline.com/health/womens-health/what-to-eat-during-period
Itani, R., Zullo, A. R., Itani, R., & Itani, R. (2022). Primary dysmenorrhea: Pathophysiology, diagnosis, and treatment updates. The Nurse Practitioner, 47(x), e107–e114. https://journals.lww.com/tnpj/Fulltext/2022/04000/Primary_dysmenorrhea__Pathophysiology,_diagnosis,.6.aspx
Latif, S., Naz, S., Ashraf, S., & Jafri, S. A. (2022). Junk food consumption in relation to menstrual abnormalities among adolescent girls: A comparative cross-sectional study. Pakistan Journal of Medical Sciences, 38(7), 1744–1750. https://pmc.ncbi.nlm.nih.gov/articles/PMC9676579/
Mayo Clinic. (2022, April 30). Menstrual cramps – Symptoms & causes. https://www.mayoclinic.org/diseases-conditions/menstrual-cramps/symptoms-causes/syc-20374938
Mayo Clinic. (2023, August 30). Heavy menstrual bleeding – Symptoms & causes. https://www.mayoclinic.org/diseases-conditions/menorrhagia/symptoms-causes/syc-20352829
MedlinePlus. (2024, October 15). Vaginal or uterine bleeding. U.S. National Library of Medicine. https://medlineplus.gov/ency/article/007496.htm
MedlinePlus. (2025, January 21). Magnesium in diet. U.S. National Library of Medicine. https://medlineplus.gov/ency/article/002423.htm
MedlinePlus. (2025, September 8). Potassium. U.S. National Library of Medicine. https://medlineplus.gov/potassium.html
Mohammadi, M. M., et al. (2022). The impact of omega-3 polyunsaturated fatty acids on the severity of primary dysmenorrhea: A systematic review and meta-analysis. International Journal of Gynecology & Obstetrics, 157(x), 1–10. https://pubmed.ncbi.nlm.nih.gov/35059756/
Najafi, N., Khalkhali, H., et al. (2018). Major dietary patterns in relation to menstrual pain: A cross-sectional study. BMC Women’s Health, 18, 69. https://pubmed.ncbi.nlm.nih.gov/29783972/
Niazi, A., Moradi, M., & Niazi, A. (2021). The effect of chamomile on pain and menstrual bleeding in primary dysmenorrhea: A systematic review. Journal of Pharmacopuncture, 24(2), 83–92. https://pmc.ncbi.nlm.nih.gov/articles/PMC8242407/
Nutrition.org.uk. (n.d.). Hydration information. British Nutrition Foundation. https://www.nutrition.org.uk/nutritional-information/hydration/
Pokrzywinski, R. M., et al. (2021). The role of water intake in the severity of pain and menstrual distress among females suffering from primary dysmenorrhea: A semi-experimental study. BMC Women’s Health, 21, 37. https://pubmed.ncbi.nlm.nih.gov/33509179/
Proctor, M., & Farquhar, C. (2006). Dysmenorrhoea. BMJ, 332(7550), 1134–1138. https://www.bmj.com/content/332/7550/1134
Rahbar, N., Asgharzadeh, N., & Ghorbani, R. (2012). Effect of omega-3 fatty acids on intensity of primary dysmenorrhea. International Journal of Gynecology & Obstetrics, 117(1), 45–47. https://www.sciencedirect.com/science/article/abs/pii/S0020729211006564
Rosser, M. (2025, November 30). What to eat during your period: Foods that help reduce cramps and foods to avoid. NewYork-Presbyterian Health Matters. https://healthmatters.nyp.org/what-to-eat-during-your-period-foods-that-help-reduce-cramps-and-foods-to-avoid/
Sen, L. C., et al. (2024). Food craving, vitamin A, and menstrual disorders: A cross-sectional study. PLOS ONE, 19(x), e0310995. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0310995
Shabani, F., et al. (2022). Comparing the effect of chamomile and mefenamic acid on primary dysmenorrhea: A randomized clinical trial. Open Access Macedonian Journal of Medical Sciences, 10(x), 1–7. https://www.sciencedirect.com/science/article/pii/S1874944522000715
Shobeiri, F., Oshvandi, K., et al. (2017). Effect of calcium on premenstrual syndrome: A double-blind randomized clinical trial. Obstetrics & Gynecology Science, 60(1), 100–105. https://pmc.ncbi.nlm.nih.gov/articles/PMC5313351/