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.
Magnesium Can Help Constipation. Magnesium is a popular cure for constipation. In the UK, Epsom salts (magnesium sulfate) is a powerful laxative, but Milk of Magnesia and magnesium citrate are also taken for constipation.