I am a healthy 45 y.o. female athlete. I have been exercising my entire life and have competed at the college level in two sports. I am no stranger to heavy training More recently I have taken up long distance running. I have run 5 marathons but haven't run one in about 5 years. Training is going well except that after long runs( (over 15 miles) I have been experiencing severe stomach cramping, diarrhea, nausea and some mild bleeding that lasts for hours post run. I have had a colonoscopy within the last year that checked out fine. I eat a very bland diet of oatmeal the morning of the run, I drink half water, half gatorade during my runs but I also take two Advil about an hour into the run. Any ideas what could be causing this? It only happens after long runs but it takes hours to recover.
I would suggest you to check all your resting indicators like heart rate, blood pressure and see if they are normal and also follow up after a cardio. I would also suggest you to get your stool examined and rule out any intestinal infections. I would also suggest you not to exert yourself and slowly increase the speeds and intensity. Eat a proper balanced diet with protein and carbohydrates to give you energy. Consider a glass of fresh juice, milk shake or glucose before and during your marathon to give you a continuous source of energy. Follow up with a general physician for further testing if your symptoms continue.
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