400 lbs, 5'9". perfect blood pressure & blood sugar. high insulin and testosterone levels. abnormal weight gain since childhood. strict diet. why????

Other Labs?: I hope your thyroid has been checked and is normal. Although typically those with low thyroid causing weight gain are short and you are rather tall! It is probably a simple matter of more calories taken in than you are burning off which is putting you in a positive calorie balance resulting in weight gain. Drink only water, eat 8 fruits and veggies daily and ramp exercise to 10,000 steps daily