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.
Although vitamin D may help with weight loss, it is not recommended to take excessive vitamin D in an attempt to lose those extra pounds. Because vitamin D is a fat-soluble vitamin stored in the fat cells, high doses may lead to toxicity. The upper limit of vitamin D is 4,000 IUs.Signs of vitamin D toxicity include nausea, vomiting and weakness. As with most vitamins, more is not always better.lthough vitamin D may help with weight loss, it is not recommended to take excessive vitamin D in an attempt to lose those extra pounds. Because vitamin D is a fat-soluble vitamin stored in the fat cells, high doses may lead to toxicity. The upper limit of vitamin D is 4,000 IUs.