Painful periods are common. More than half of people who menstruate have some pain for up to three days a month, typically throbbing or cramping in the lower abdomen. Digestive changes - such as vomiting, gas, bloating, diarrhoea and a "bubbling gut" - are also common around the time of menstruation. Foods rich in omega-3 fatty acids include chia seeds, walnuts, flaxseeds, salmon, herring, sardines, mackerel, oysters and edamame beans. Highly processed foods include energy-dense, nutrient-poor foods such as takeaways, chips, biscuits, doughnuts, processed meats and soft drinks.
