Our 14 y/o son was a very healthy boy until March. Today he woke up feeling sick, followed by diarrhoea. It's the 4th stomach bug this year, this had never happened to him before and we are starting to get worried as he's constantly losing weight and struggles to gain it back.
Does any of you know what the reason could be? He's had more stomach viruses in 6 months than in his whole life together. Can it be some vitamin deficit?