Endometriosis is a common chronic disease affecting women that is associated with debilitating pain, infertility, and other symptoms. However, evidence suggests that supplementation with omega-3 fatty acids, which are found in fish oil, may relieve pain and improve quality of life in patients with the condition, according to a study published in the journal Frontiers in Nutrition. According to the researchers, the beneficial effects of fish oil are primarily due to its ability to counteract inflammation and local muscle spasms. At the same time, modern diets often contain far too little omega-3 from oily fish and too much omega-6 from seed oils, corn oil, and other processed foods. This imbalance between omega-3 and omega-6 fatty acids increases the risk of endometriosis as well as many other chronic diseases.

Asthma is one of the most common chronic diseases, and diet and lifestyle play an important role in its increasing prevalence. Evidence also suggests that the widespread deficiency of vitamin D increases the risk of developing asthma during childhood and adolescence and is associated with more severe symptoms, according to a meta-analysis published in Pediatric Pulmonology.