Originally Posted by tical

A couple of things to consider:

1. Changing your diet to something like paleo (typically low in carbs) instead of vegetarian. For someone dealing with PCOS related weight gain (insulin resistance) carbohydrate intake should be limited. Vegetarians tend to get a large portion of calories from carbohydrates, which is very hard on blood sugar levels and unable to be utilized by cells efficiently (resulting fat gain).

2. Eat more protein from whole food sources. Protein is an essential building block for all lean mass in the body, especially muscle. The development of muscle will also support fat loss. Don't be scared to begin resistance training (vs only cardio/aerobics).

3. Our body (hypothalamus) works to regulate our weight to what it feels is "optimal." If you're eating a lot of food, your metabolism will increase in order to avoid weight gain. On the flip side, if you're in a caloric deficit (dieting), your metabolism will slow in order to preserve weight. Keep an eye on your body temperature, if it is frequently lower than 98.6F (in the 97s for example), this is a good sign that your metabolism is impaired and should be investigated (thyroid,cortisol levels,etc).

Good luck