Help with step children? Serious answers only, please-?

He is 10 and very unhappy. I would suggest taking him for a physical with a kind doctor. Then maybe getting him signed up for some sports HE likes. It might take a while to find one. he probably has few friends but if he has any, work with that too. Do not belittle him. he feels bad enough as it is. his dad might get involved here too. Go for walks together, rid the house of excess junk foods. Maybe have the doctor call his mom. I feel for the guy. It is very hard to lose weight and diet. It i harder than stopping smoking. It has to be hell for a 10 year old boy.