Dysmenorrhea refers to painful menstruation. It is considered primary dysmenorrhea when no underlying pelvic pathology is present, and secondary dysmenorrhea when pain is associated with conditions such as endometriosis. In primary dysmenorrhea, pain is believed to result from uterine contractions and reduced oxygen supply to uterine tissue. The discomfort is commonly described as cramping, but it may also present as a dull, constant ache.
Symptoms often begin shortly before or during menstruation and may include nausea, diarrhea, frequent urination, mood changes, depression, or breast tenderness. A number of natural approaches have been explored to help reduce symptoms associated with PMS and dysmenorrhea.
A crossover study published in the Eastern Mediterranean Health Journal (2010; 16(4): 408–413) examined the effects of omega-3 fatty acid supplementation in 36 women aged 18 to 22 with dysmenorrhea. Participants were randomly assigned to receive either a fish oil supplement providing 550 mg of eicosapentaenoic acid (EPA) and 205 mg of docosahexaenoic acid (DHA), or a placebo, for three months. After this period, the groups switched treatments.
The severity of symptoms was significantly reduced during the fish oil supplementation phase. Women reported less back pain, less abdominal pain, and reduced use of analgesic medications compared to the placebo phase. These findings suggest that omega-3 fatty acids may help reduce pain and inflammation associated with dysmenorrhea.
