what can not be digested in the stomach or small intestence
The comparative form is "more serious"; the superlative form is "most serious".
more serious and most serious
Systemic lupus erythematosus. This is the most serious form of lupus and affects about 70% of all persons with lupus
Type A is the most common form of NPD and the most serious, with death usually occurring by the age of 18 months.
eclampsia
........You die! LOL! Just kiddin! Sorry I really dont know.
No, but over time it could develop into a more serious condition, if it becomes chronic.
in the brain and internal bleeding
Most fruits (and their juices) are acidic, and any acid foods can contribute to heartburn.
Yes it is possible, you can have heartburn at all ages and it isn't uncommon to have Heartburn at the age of 13, as by then most people would have started their period and heartburn is one of the side effects.
Yes it may only be heartburn, but it may be something more serious such as GERD or heart problems, only a Dr. examine you can diagnose it as "only heartburn". Am currently experiencing similar symptoms and am left to wonder if i should connect the same with my frequent chest pains. Can someone with some good advise please advise on this issue?? We need it out here desperately.
The noun form of the adjective serious is seriousness.