Weight concerns with 9 yr old
I'm looking for suggestions on how to broach the subject of weight concerns with my nine year old boy without causing the kind of reaction where he is overly aware of it and has embarrassment or sneaks around to eat treats. My son has never been super interested in athletics as much as we've tried to support and encourage these interests. My husband and I eat pretty healthy, exercise, and have always tried to instill this in our kids. He's always had a little bit of a tummy, but this summer it really seemed much more apparent. He's doing some martial arts classes one to two days per week, but that's it for sports other than whatever happens at school. He's a bright kid, does well in school, and enjoys reading. But he, like many kids his age, enjoys treats and screen time. We try to limit those, but try not to be too obsessive about it. I'm wondering what I can do to help him control his weight and / or get healthier as well as how to kind of get him a little aware without giving him any weird complexes about his body. Any suggestions, books, websites are appreciated.