This disease, caused by a virus, attacks the liver and usually causes severe illness, but generally does no permanent damage. It can spread from person to person. Fish caught in the Pacific and elsewhere during certain times of the year may be infected by a one-celled organism that causes a serious form of food poisoning . Also, Japanese sushi, or raw fish, can be contaminated by a parasitic worm. About 80 kinds of mushrooms are poisonous and eating a meal of certain ones can kill.
Mushroom poisoning causes convulsions, nausea , vomiting , vision problems, and stupor.
Get immediate medical attention if you suspect that you have eaten a poisonous mushroom. Berries and leaves should never be eaten unless you are certain about their safety. One plant with attractive black berries is deadly nightshade. Other poisonous foods include berries on holly bushes and privet. Nonedible parts of common domesticated fruits and vegetables may also be poisonous, including potato eyes and sprouts, rhubarb leaves, and peach pits.