Menopause Hot Flashes question answered!

I am 54, went through menopause about 2 years ago. I'd have some mild hot flashes mainly at night just being too hot in bed when I knew I shouldn't. Finally I had been done with that or so I thought! I just had a yearly check up and this is what happened:

I told my doc that I thought my hot flashes were over, but they have come back this year. I had gone for months without them bothering me at night. She told me it was because I was LOSING FAT! As my fat cells empty out and shrink, they release estrogen that is trapped there so I can use that as a gauge to know that my fat stores are decreasing! That never occured to me, although I have read that being overweight will somehow cause the fat to turn to or store estrogen in both men and women. I know I am not saying it right, but higher body fat = higher estrogen levels in both men and women. So when we lose weight the estrogen floods back into the bloodstream and gives us hot flashes once again!