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.
Vitamin E and Vitamin K. Vitamin E and vitamin K are fat-soluble vitamins, which means they're stored in the body. Over-consumption of vitamin E may lead to toxicity, so you shouldn't have more than 1,000 milligrams a day.Vitamin K toxicity is rare and an upper intake hasn't been established.hiamin, riboflavin and niacin share similar functions. Theyâre all coenzymes needed to turn food into energy, ensure healthy skin, keep the nervous system working and to create red blood cells. One cup of whole strawberries provides about 3 percent of the recommended daily value of these three B vitamins.