SODA FOR A 13 YR OLD?

so... i am 13 i drank soda on a regular basis but 3 weeks ago my mom said no more soda for you Instead she wants me to drink Turkey hill lemonade. But lemonade doesn't quench my thirst. I need websites saying one cup of soda a day is okay for a 13 yr old. If you give facts please back it up with a source.