sugarcubex19

my dad is 55 years old and hes alittle overweight, like its not like he cant walk but he just has a bit of a belly. he also has diabetes and mainly just has to watch his sugar intake which is why he'll generally have sugar free pudding or chocolate or yogurt. i try to have him work out but he's been working a lot lately and hasnt worked out in a while. he also tends to like , sneak foods tht are not good for him at all alot. like he would sneak like a half a sleeve of girl scout cookies and he ate about 8 entemins cookies last night and theres no way he can handle that amount of sugar. im trying to drill it into him that he needs to start living a better life but im getting so worried about him. what can i do to have him realize this kinda stuff and how he needs to start worrying about his health more and not go sneaking these bad foods. i'm 15 by the way.

thanks so much