Recently me and my family went on holiday we did a lot of lounging around and sunbathing and had an excellent time however my son went in the pool alot. I only noticed when he went into the pool for the first time how big he looked. I had never thought he had looked that overweight before but all throughout the holiday I couldn't stop noticing how large he was even with clothing on. He had breasts and a large stomach. His stomach had quite a few rolls and came over his shorts. I'm not sure whether he actually notices. I try my best to cook and eat healthy and homemade with plenty of fruit and vegetables. After we arrived home I put him on the scales and he weighed 74kg. He is 13 years only and is about 5foot 3. I have started to make suttle changes to his diet. I am looking for advice from anyone who has been a similar thing or whether anyone is currently in a similar situation thanks in advance.
Our DCs aren't overweight but that's because they do a lot of sport. However we realised the portions we were serving were adult size and if they cut back their sport then they would become overweight. It also wasn't healthy for us to eat as much as we did. So we just got smaller plates and bowls - smaller portions look big so we feel full up on less food!
Is this a sudden thing or has he put on weight generally. My son is 38kg and similar height as your DS. That's a bug difference for you both not to have noticed. I'd say cut back on the carbs. Does he like swimming? My DS does 80 to 90 lengths every sat am so think that keeps him in shape.
Perhaps focus on fitness as well as food - maybe get him a fitbit, or plan some long weekend walks for the whole family, or see if he'd be interested in signing up for a football club, or junior parkrun, or a million other options.
For food look at cutting out as much sugar as you can manage and serve fibrous (green and coloured) veg first at mealtimes. Try and eat as a family and take time over meals - people eat more when distracted.
Avoid making significant changes just for him - if he feels like it's a big issue it could lead to comfort eating or boomeranging straight back in future.
Good luck and well done for making the realisation that he needs help.