Yay another vegetarian, I don't eat any meat at all but will have dairy products.
O.h has to watch his weight all the time but has found it's easier to have a small treat every day, it helps to stop him falling off the wagon.
M.I.L has the opposite problem, she had 2/3 rds of her stomcah removed because of cancer 15 years ago and any weight gain for her is a good thing as she is so thin. She's recovering from a gastric bug that nearly killed her earlier this year, went down to 28 kg. She's now up to 33 kg.