Hypothesis:

There will be no effect of the DASH diet and aerobic exercise on premenstrual syndrome.

Statement of the problem:

Do the DASH diet and aerobic exercise have an effect on premenstrual syndrome?

For some women, symptoms of PMS may be so severe that they miss work or school. Physical activity is a suitable method for the treatment of PMS and is the best method for all women to reduce pressure and balance the brain's chemical secretion. It seems that physical activity by increasing endorphins and reducing adrenal cortisol leads to the improvement of symptoms of PMS.

DASH diet has been suggested to play an important role in the development, and treatment of some psychological disorders. For instance, it has been reported that a diet rich in fish, folate, and B-vitamins can alleviate the manifestations of depression. An established association was also shown between the dietary glycemic index (GI) and psychological diseases, depressive disorder, and mental functioning.

Diets containing of "junk foods" (high energy and low nutritional) have been shown to increase the risk of mental illness, but a healthy diet is associated with less depressive symptoms and can improve mood .

Inclusion Criteria:

• Fifty adolescent females were diagnosed with premenstrual syndrome.
• Their age will be ranged from 15-to 25 years (3 years post-puberty).
• Their body mass index (BMI) will range from 18-25.9 kg/m2.
• All are of regular menstrual cycles.
• All of them suffer from moderate and severe PMS.

Exclusion Criteria:

• Any pathologic findings in the pelvic cavity as a polycystic ovarian syndrome, endometriosis, and pelvic inflammatory diseases.
• Having irregular menstruation.
• Any metabolic diseases.
• Any history of gynecological intervention.