FULL STORY. Phytochemicals known as flavanols, which are found in chocolate, fruits and vegetables, can boost the levels of nitric oxide in the blood of smokers and reverse some of their smoking-related impairment in blood vessel function, according to a new study in the Oct. 4, 2005, issue of the Journal of the American College of Cardiology. Share:
The list of signs and symptoms mentioned in various sources for Viral gastroenteritis includes the 6 symptoms listed below: 1  Watery diarrhea. 2  Vomiting. 3  Headache. Fever.  Abdominal 1  cramps. Stomach 2  ache. more information...Â».
Depending on the cause, viral gastroenteritis symptoms may appear within one to three days after you're infected and can range from mild to severe. Symptoms usually last just a day or two, but occasionally they may persist as long as 10 days. Because the symptoms are similar, it's easy to confuse viral diarrhea with diarrhea caused by bacteria, such as Clostridium difficile, salmonella and E. coli, or parasites, such as giardia.