How can I help my 16 yrs old to loose weight?

th2much

my ds is 16 & is 100kg. He wants to shed abt 20kg . I tried to get him on mfp but you have to be 18 to sign up. How can I help him?? How do I figure out how many calories he need?
thanks

Thomasm198

my ds is 16 & is 100kg. He wants to shed abt 20kg . I tried to get him on mfp but you have to be 18 to sign up. How can I help him?? How do I figure out how many calories he need?
thanks

sparkteens.com

It's specifically for teens.

th2much

thanks