Research the causes of these more general types of symptom: 1  Stool symptoms (2508 causes). 2  Constipation (726 causes). 3  Digestive symptoms (5299 causes). 4  Bowel problems (2509 causes). 5  Bowel movements (2383 causes). 6  Intestinal symptoms (5299 causes). 7  Lower abdominal symptoms (3048 causes). 8  Abdominal symptoms (5930 causes).
Some poisons are also toxins, which is any poison produced by animals, vegetables or bacterium, such as the bacterial proteins that cause tetanus and botulism. A distinction between the two terms is not always observed, even among scientists. The derivative forms toxic and poisonous are synonymous.
Bacteria: While most bacteria are harmless and some are even beneficial to humans, other bacteria are capable of causing disease. Pathogenic bacteria that cause disease produce toxins that destroy cells. They can cause food poisoning and other serious illnesses including meningitis, pneumonia, and tuberculosis.