im 23...... i didnt start gaining till the end of last year.... my b/f has told me that i eat lot more now then when he first met me.. weve been together for 2 years..... idk... my doc said that it might bwe my tyroid...... so i go back next thursday to see if its that .. she took some blood work... if its not my thyroid then im gonna talk to her about gettting a nutrionist cause i dont wnt to gain anymore weight.....