<human>: Repost from /r/askreddit

So, here it goes... I am starting to get concerned about my brothers weight.

He's 10 and around 140cm and he weighs about 140 lbs.. I know that this is extremely unhealthy for his age. I keep trying to tell my mother to help him by stop buying junk food (crisps, cup noodles, noodles, sweets, cakes etc.) and to make him do more exercise. However, she seems to ignore what I say and continues to buy my brother excessive amount of junk food and allow him to laze around watching TV all day.
The reason to my brothers eating excessive junk is really because of boredom. He doesn't have much to do and when he is bored he just eats junk food... I've tried talking to him and he just nods and then he continues the next day.

The same thing happened to me when i was younger and i was severly obese. But as i got older i understood and started to eat healthily and now I have reached a reasonable weight. Ofcourse I dont want my brother to go through the same weight loss I had to go through, so how possibly can I help my brother..

Note: I live with my dad and my brother lives with my mum, he only comes back to dads 1-2days a week.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: mother doesn't care about brothers eating habits, he is getting obese and nothing i can do to change it. HELP!