 [ Symptoms ] how is the staging of prostate cancer done [ Disease ] in some cases active teenagers are so busy and stressed that they do not get adequate nutrition and calories it sounds like your grandson is appetite is down and reflux is suspected it is best to get him to a doctor so he can find out if it is acid reflux another gastro intestinal issue or something else for now small frequent wholesome meals that are not fried greasy or spicy and are free of caffeine may improve tolerance and appetite for more on symptoms of acid reflux see this webmd article <link>