When will people understand that you can't spontaneously....

From experience, absolutely you can. I was at 205 lbs for ages, had one week of steroids, and I went up to 213 lbs. One month later after eating HORRIBLY (it was the Holidays last year, I was easily eating 4000 calories a day) I had lost 5 lbs.

You need to do some research before you say things

http://www.mayoclinic.org/diseases-conditions/high-blood-pressure/expert-answers/beta-blockers/FAQ-20058385

But, sometimes, it's not so much weight gain, as it is almost impossible to reduce weight. But, beta-blocker cause weight gain

Maybe you can explain to me then why I gained 50 pounds in 2 months when I was 16 and went on the pill when there were no other changes in food and exercise? Medicines can certainly change the metabolism and mess with hormones. It's a fact. it has nothing to do with calories.

Totally agree with everyone else who has said some version of this.

I gained 10 lb that showed 100% as a bloated horrible roundness in my face in 14 days of being on steroids for a spider bite. It was awful. It wasn't the food I consumed, which was actually less than usual due to being in shock and extremely upset because the doctors talked about amputating my leg where the bite was.

hm yeah, I guess that makes sense metabolic rate decrease makes scientific sense, but I still don;t see how 50 or so pounds can be gained from being on a shot? I'd cut my intake immediately if I noticed a 5-10 pound gain even

I'm sorry that you don't believe it's possible. It's a documented FACT.

As is this:

I currently eat MORE than I ate at nearly 600 pounds, and I weigh LESS daily.

Why?

Metabolism.

Hormones.

However, I'm glad that you know everything that there is to know about this:)

Ever heard of metabolic supression? The way to combat it is by eating more calorise which will cause weight loss.

Also just because you eat more doesn't mean you're consuming more calories. You can be consuming higher volumes of food.

First, stop acting like a condescending @$$.

Second, PCOS doesn't work that way. You cannot eat more to "increase your metabolism," in part because it's not metabolic suppression - at the very least not in the manner you're suggesting.

In women, especially, the interactions of insulin, estrogen, testosterone, progesterone, and cortisol play a huge role in weight. Exponentially more than they do in men (particularly the non-insulin hormones). Fluctuations in the body's sensitivity to, and/or production of, insulin can even, by itself, cause massive changes in weight. That's why one of the main symptoms of Type 1 Diabetes is weight loss and the inability to gain weight.

Insulin, particularly, is the key to whether we store or release fat. If insulin levels are low, the body burns fat. If they're high, it stores it. In an otherwise healthy body, the insulin levels fluctuate such that the body can store or burn fat as needed, but when the body swings too far in either direction and stays that way, weight issues ensue, often despite dietary efforts to counteract it. To provide an example - I also have PCOS, and as a result, my insulin levels run high. This means that despite eating at TDEE-10%/20%, I couldn't lose weight - at all. Why? Because between my insulin running high and the subsequent insulin resistance, my body never got the signal to burn stored fat. There was even a time when I ate as low as about 1200 calories for about a week and it had no effect. Fast forward to now, when I'm on Metformin (which increases insulin sensitivity), I'm actually exercising less than I was previously, and eating around the same deficit and pretty much the same foods, and I'm losing weight. The only difference? The change in insulin sensitivity.

Back to the other hormones - as I mentioned, all the aforementioned hormones affect one another. Things like birth control (pill, shot, ring, it doesn't matter; if it's hormonal, it screws with the balance) screw with the balance, which cascades to the other hormones, resulting in - you guessed it - weight fluctuations (usually in the upward direction).

Now, yes, if you want to be technical, part of the issue is likely due to changes in metabolism, but that's not the question here. The question is whether these things can cause weight gain without changing eating or exercise habits. The answer to that is a resounding yes. Should the person catch it before it gets to 50lbs? Perhaps, though depending on how they carry their weight, and what kinds of clothes they wear, it's easy to miss for quite some time if they're not weighing themselves all the time. Again, I can use myself as an example - my weight can fluctuate by upwards of 20lbs before I see much of a difference even in tape measurements. And it's generally more than 30-40 before I see changes in clothing size. So yes, for some people, it does take quite a bit of weight before they notice that something is wrong.

some medications can also impact metabolic rate which means that at the same food intake at which you were maintaining, you are now gaining weight. Some medications also have a rather substantial impact on hormones and hormone imbalances often do cause metabolic issues for which, again, you can go from maintaining to gaining on the same calorie intake.