Some experts say that a fact is common knowledge if it can be found in three independent sources. Purdueâs Online Writing Lab recommends finding five independent sources before considering a fact common knowledge. The point is that common knowledge can be found in a variety of sources.
VITAMIN D. Vitamin D and vitamin A are the most toxic of the fat-soluble vitamins. The symptoms of vitamin D toxicity are nausea, vomiting, pain in the joints, and loss of appetite. The patient may experience constipation alternating with diarrhea, or have tingling sensations in the mouth.
Water-soluble vitamins are readily excreted from the body. Vitamin Toxicity Fat-soluble vitamins are not excreted readily and because they are stored in body cells, accumulation may cause toxicity. Vitamin A and D toxicities are observed more often then others. Absorption varies depending on the food source.