even small amounts of calf teen on children ages 8 to 9 and on teenagers ages 15 to 17. the younger kids got approximately the caffeine equivalent of a half to a full can of soda. the teens one to two cans worth. among all groups that teenage boys experienced slightly higher blood pressure level than the girls. researchers in this study aren't sure sure. another concern, the effect after caffeine on millions of kids with other medical issues like adhd. >> if you take asthma medications or behavioral medications, this can be a big problem and something that has a buy logical effect on our bodies and have you to be careful. >> boy. especially with the younger kid. >> no doubt about it. so "daily news" the front of "the daily news" a tough picture