Where PCOS is associated with overweight or obesity, successful weight loss is the most effective method of restoring normal ovulation/menstruation, but many women find it very difficult to achieve and sustain significant weight loss. A scientific review in 2013 found similar decreases in weight and body composition and improvements in pregnancy rate, menstrual regularity, ovulation, hyperandrogenism, insulin resistance, lipids and quality of life to occur with weight loss independent of diet composition.[41] Still, a low GI diet, in which a significant part of total carbohydrates are obtained from fruit, vegetables and whole grain sources, has resulted in increased menstrual regularity than a macronutrient-matched healthy diet.[41] Vitamin D deficiency may play some role in the development of the metabolic syndrome, so treatment of any such deficiency is indicated.[42]

..... In other words, eat your veggies and don't be a pig. Medically speaking, of course.

I was a lard-ass like you, until I took a doughnut to the knee.