Weight Loss Surgery & Scars: How would I tell?

[Guest guest]

If someone has lost a huge amount of weight very fast...how could I

tell if they did this through weight loss surgery? What type of scars

would be left? Or is it possible for someone to have weight loss

surgery and plastic surgery without any signs of having had WLS? If

so, what prevents people like this from entering competitions after

surgery without others knowing? It just seems impossible that someone

could lose 100 lbs in six months through exercise and healthy eating

alone, without flabby skin. So isn't it likely someone like this may

have had liposuction, WLS, and plastic surgery? Thanks.