Endometriosis is a chronic, oestrogen-dependent inflammatory disease whose symptoms, such as pain and fatigue, can be exacerbated by inflammation in the body. An appropriately composed anti-inflammatory diet, based on unprocessed products rich in omega-3 fatty acids, polyphenols, fibre, vitamins and minerals, among others, can support hormonal balance and alleviate discomfort. At the same time, it is recommended to limit products that increase inflammation, such as sugar, alcohol, trans fats and highly processed meat. This nutritional approach can be an important adjunct to treatment and improve the quality of life for women with endometriosis.