Will I lose weight eating 500 to 700 calories a day for a month?

You will lose weight at first. I know that because I've done it. I don't want to lecture you but I'll give you as much information as I can, read as much as you want.

At first, you will lose huge amounts of weight, much more than the typical diet. I was losing about 3kg a week at most while eating that much and burning about 1000 calories a day with cardio. Eventually, your body will get used to eating that much and your weight-loss will get slower and eventually stop.

Now, most people will tell you that you will put the weight back on now. That's not necessarily true. If you keep exercising a lot after finishing your diet and slowly increase your calorie intake, you can keep the weight off.

You will however, have do deal with strong hunger pangs and carb-cravings. If you're strong willed and can deal with it, then you will be able to keep the weight off. For anyone who will say that the weight won't stay off, I've lost over 50 pounds doing that and have managed to keep it all off for over a year (Sticks tongue out).

;) As for underlying problems, I've gotten my bloodwork done recently and am perfectly healthy.

Every body is different and so is your metabolism. I have tried everything under the sun .. From the biggest loser to high protein etc.. here is what is working for me.. I'm 5'6 221 lbs.. tired of being fat and tired of being tired.. so.. changed my eating I won't say diet to vegan /plant based and some protein .. egg / protein powder .. I started walking 30-60 min a day for 5 days a week and drink 8-10 glasses of water.. I eat 700or less a day and some days I eat 1400 :) since Jan 12 2015 until now Feb 13th 2015 I have lost 15 lbs.. and will continue to do this until I get down to my goal weight and I use myfitness pal.. you see if I eat your 1500 calories etc a day .. and eat the 3 meals plus snacks.. I DONT LOSE weight.. I stay the same.. so find what works for you .. I am going to get back to my 135 -140 lbs that I need to be .. :) peace out everyone..

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.