Are some people born with extra skin on their lower abdomen? Is it hereditary? (Photo)

30 yrs old. I have lower belly pooch that I've had ever since I can remember. I am currently 134 pnds (i'm 5'5). Been 107 pounds & it was still there. I was a really skinny kid.Never overweight. Not an ounce of fat on my body, but it was present. No matter how much I work out or cut out sugars bread pasta it barely shrinks at all. I had a consult w/ a plastic surgeon& he said that I couldn't just get lipo that I would have to get a tummy tuck as well becuz I have extra skin on my lower abdomen.