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.
Some vitamins can be toxic in high doses Water-soluble vitamins dissolve only in water Fat-soluble vitamins dissolve only in fat Because theyâre not stored in the body, water-soluble vitamins must be replenished regularly A balanced diet supplies most vitamin needs; some people would benefit from supplements, such as those with special needs or who donât eat sufficient fruits and vegetables.