Different types of bloating may benefit from including different foods.
Key Points
- Strained Greek-style yogurt with probiotics may ease bloating and support digestion during your period.
- Potassium-rich foods like bananas can help reduce water retention and support fluid balance.
- Salmon’s omega-3s may ease period bloating by reducing inflammation and menstrual discomfort.
Bloating is a common part of the menstrual cycle for many people, but that does not make it any less uncomfortable. Hormonal changes before and during your period can affect fluid balance and digestion, which may leave you feeling puffy, constipated or gassier than usual.
While food cannot prevent these normal hormonal shifts, certain choices may help ease symptoms by supporting regular digestion, fluid balance and overall comfort. We spoke with dietitians to find out which foods may help you feel less bloated during your period.
Why You Feel Bloated on Your Period
Period bloating can come from fluid retention, digestive changes or both. “In the days leading up to and during menstruation, changes in estrogen and progesterone can influence fluid balance, digestion and gut motility,” says Supriya Lal, M.P.H., RDN, LDN. Research suggests that these hormones interact with the systems that regulate sodium and water retention, although their effects are complex and vary throughout the cycle.
Hormonal shifts may also change the way your digestive tract functions. Gastrointestinal symptoms such as bloating, constipation and nausea often become more noticeable before menstruation. This is because progesterone may slow gastrointestinal movement for some people, which can leave stool in the colon longer and contribute to constipation.
Once menstruation begins, prostaglandins help the uterus contract, but they may also affect smooth muscle in the digestive tract. That may explain why some people may experience looser or more frequent stools instead of constipation. “Bloating” can therefore describe several sensations with different causes, explains Amanda Roll, M.S., RD, CDN.
Foods That Can Help
Greek Yogurt
Strained yogurt (such as Greek-style) may be most useful when constipation or irregular bowel movements are adding to the feeling of gastrointestinal pressure. “Greek yogurt contains probiotics that can help benefit overall gastrointestinal health, including bloating and motility,” says Roll.
The effect depends on the product and your personal tolerance. Roll recommends looking for yogurt labeled with live and active cultures, since not every yogurt contains the same microorganisms. One review article found that fermented dairy foods improved symptoms such as constipation, gas and abdominal discomfort.
Greek yogurt is also a source of calcium. One meta-analysis found that calcium supplementation reduced overall PMS symptom severity compared with control treatments. While supplements provide a more concentrated dose than food, strained Greek-style yogurt can still help you add calcium to your diet along with protein and active cultures, depending on the type and brand.
Our experts note, though, that if dairy regularly worsens your gas or abdominal discomfort, it may not be the right choice for you.
Oats
If bloating on your period tends to arrive with fewer bowel movements or harder stool, oats may be the food for you. Constipation can cause stool to sit in the colon longer, which may increase pressure, fullness and gas. “Fiber supports healthy digestion and can help prevent constipation,” says Lal. Oats provide soluble fiber, which absorbs water and helps soften stool.
One review article found that soluble fiber supplementation improved constipation by increasing stool frequency and making stools easier to pass. This is likely because fiber draws water into the stool and adds bulk, helping it pass more easily and relieving the pressure and fullness that can build when constipation contributes to period bloating. Although the research examined fiber supplements rather than oats specifically, oats are a practical whole-food source of soluble fiber that can be included regularly at breakfast or as a snack.
Bananas
When your symptoms feel more like puffiness than trapped gas, bananas can contribute potassium, a mineral involved in normal fluid regulation. “Potassium helps support fluid balance and may counter some of the effects of higher sodium intake that can contribute to water retention,” says Lal.
Potassium influences how the kidneys handle sodium, which in turn affects how much water the body holds. One study found that potassium supplementation changed the activity of a kidney transporter responsible for reabsorbing sodium in healthy adults eating a high-sodium diet. Although the study used supplements rather than food, it helps explain why regularly eating potassium-rich foods may support the processes that regulate fluid balance.
Bananas are a convenient option, but potatoes, beans, lentils, avocado, yogurt and leafy greens also provide potassium. Roll explains that rather than avoiding sodium completely, aim to include potassium-rich foods throughout the day to support normal fluid regulation.
Salmon
Salmon may help most when bloating is part of a broader group of period symptoms that includes cramping or generalized discomfort. During menstruation, the body releases prostaglandins to help the uterus contract. These compounds can also stimulate the smooth muscle in the digestive tract, which may contribute to more frequent bowel movements and the abdominal pressure people often describe as bloating.
“Fatty fish are high in omega-3 fatty acids, which are anti-inflammatory,” says Roll. Salmon provides EPA and DHA, two long-chain omega-3 fats that can change the foundational materials the body uses to produce prostaglandins. This may help moderate some of the inflammatory signaling involved in menstrual discomfort.
One meta-analysis found that omega-3 supplementation reduced physical PMS symptoms, while another review article found that most included trials reported less menstrual pain and, in many cases, less reliance on pain medication. Because EPA and DHA are found directly in fatty fish, eating salmon regularly is a practical food-first way to include the same forms of omega-3s studied in the research.
Other Tips for Managing Period Symptoms
Food choices work best alongside other habits that support digestion and overall comfort while on your period.
- Stay hydrated. Drinking enough fluid helps fiber work more effectively and keeps stool easier to pass. Aim for consistent hydration throughout the day and adjust for heat, activity and your individual needs.
- Choose gentle movement. Walking, stretching or yoga may help stimulate the digestive tract and can feel more manageable if your energy is low. The American College of Obstetricians and Gynecologists includes regular exercise among the lifestyle strategies that may help manage premenstrual symptoms.
- Notice your personal triggers. Carbonated drinks can add gas to the digestive tract, while a very salty meal may make fluid retention more noticeable. While you do not need to eliminate these foods, adjusting the amount or timing when you notice a consistent pattern may help relieve bloating.
Our Expert Take
Period bloating is common, but that does not mean you have to simply put up with feeling uncomfortable. The best place to start is by paying attention to what your bloating feels like. If constipation and pressure are the main problem, oats or strained Greek-style yogurt may help support more regular digestion. If you feel puffy or swollen, potassium-rich foods like bananas may better support fluid balance. And when bloating comes with cramps or an unsettled stomach, salmon may help address some of the broader inflammation and discomfort that can accompany your period.
While none of these foods is a quick fix, they can serve as practical additions that may make your period a little easier to manage. If your bloating is severe, continues after your period ends or regularly gets in the way of daily life, talk with a health care professional to rule out another cause.