Wiktionary(0.00 / 0 votes)Rate this definition: 1  axiom(Noun) A seemingly self-evident or necessary truth which is based on assumption; a principle or proposition which cannot actually be proven or disu2010proven. 2  axiom(Noun) A fundamental theorem that serves as a basis for deduction of other theorems.
Vitamin D and Constipation-. A Preventable Problem. Constipation is one of these signs of magnesium deficiency and if you are getting constipation from vitamin d, then your body is telling you that you ARE magnesium deficient and that you probably have been for a long long time.
Vitamin D. Vitamin D is an essential vitamin found in foods such as eggs and fish. Vitamin D is also available as a supplement. Vitamin D is important to help maintain normal levels of calcium and phosphorus in the blood. It fights disease by boosting your immune system, and also aids in cell growth. However, too much vitamin D can cause constipation, poor appetite, weakness, weight loss and nausea.