Severe water retention and weight gain

How much urine are you making and how much water/fluids are you drinking? If you aren't urinating much despite drinking 8c of fluids/day, you may be retaining water.
It could be:
1) a heart/blood vessel problem: congestive heart failure (high BNP), pulmonary hypertension, valvular insufficiency
2) a medication problem: certain medications can cause water retention or weight gain (birth control, etc.)
3) an endocrine problem: hypothyroidism**, hyperaldosteronism (high aldosterone, may also have low renin), SIADH (high vasopressin), primary polydipsia
5) a kidney problem: nephrotic syndrome (low albumin, normal/high pre-albumin, high urine protein levels)
6) a liver problem: cirrhosis (low albumin, low prealbumin)

There are a few other things that could cause it, but those are the more common ones that can be ruled in or out with basic labs.

Good Luck!!

Thank you for your reply. I am urinating more frequently than normal, so i am not sure if it is water retention or just fat.

I will try to do some tests for the things you mentioned, and hopefully i will solve the weight gain issue.

Thank you for your reply. I am urinating more frequently than normal, so i am not sure if it is water retention or just fat.

I will try to do some tests for the things you mentioned, and hopefully i will solve the weight gain issue.