3. Blood Disorders. Blood disorders such as hemophilia and leukemia can cause unexplained bruising, often because your blood fails to clot properly. If you have severe and frequent unexplained bruising, it's a good idea to see a physician to rule out such disorders, especially if it seemed to come on suddenly.
Puffer fish contain the potent neurotoxin tetrodotoxin. TTX is thought to be synthesized by a bacterial or dinoflagellate species associated with the puffer fish. The toxin is concentrated in the liver, gonads, and skin. The level of toxicity is seasonal, and, in Japan, fugu is served only from October through March.
Puffer fish crush and grind up their prey with their heavy, fused teeth. human impact: The puffer fish has a powerful toxin in its liver and ovary called tetrodotoxin. This toxin harms humans when they eat puffer fish. The Japanese have a special way of cooking and cutting the puffer fish so the toxins do not harm them when eating puffer fish.