I am aware he may be depressed, and he goes to therapy, but how could he have gained so much weight so fast, and where did he get the food? He has also been sedentary since the beginning of quarantine, but hadn't put on any weight until last month

My son Gained 20 lbs last month. He's 13, 4'7 and was 70 pounds. Now he is 91. He is at a normal weight still, but is this normal? I noticed a lot of junk food wrappers in his garbage can which I didn't buy. Should I worry? Should I watch his diet? He stopped gaining weight. Now he is chubby and has a pot belly and moobs. He also grew out of a lot of his old clothes and is wearing a Husky Size in pants for his height when i took him shopping last week. I didn't say anything, because he is still at a normal weight, and as i said, he stopped putting on weight. What happened, though?