I have braces for about a year and a half now and my older brother had them too. For majority it doesn't hurt once they put the braces on but it's when they tighten that really hurts. But always eat soft foods i.e soup if you can when they're on or tightened. For weight loss it really depends on what you eat ^^" If you keep the strict diet by not eating chocolate, caramel, etc (pretty much nothing sticky or hard) then it should work. Don't expect to lose like 10 kgs through but good luck with it :)

I have been wearing braces for about 6 months. For the first few days you can only eat soft foods. The ones where you can just swallow because you can't bite. After a few days they would not hurt that bad but of course it depends on how tight your braces are.

When you first get braces eat soft foods for the first couple of days to ease the pain. Also do this every time they place in a heavier bracket it really helps with the pain. As for weight loss the braces do a lot of that for you as you can not eat hard sticky candies, popcorn, and other generally none healthy foods. I would also suggest on not drinking sodas frequently as teeth as hard to keep clean with braces this also reduces the chance of yellow spots when your braces are removed. Hope this helped! (^-^)