and yet, the girlfirend that I had many years ago who, without a doubt, gave the best head in the world, and LOVED to swallow semen, was a larger girl who ate a healthy diet, and was otherwise very active. Still, she could never manage to be slim regardless fo many times a day she would swallow (yes, you read that right, several times a day sometimes - gawd I miss her!).
Iagree with the sentiments of the Dr. above who says it's crap, but I fully support any and all further research into this area. Who knows what fantastic new developments they can CUM up with!
Peace,
Pierre