B vitamins are water-soluble and because they do not get stored in the body, we humans depend on regular intake of them. B vitamins work in synergy in a highly complicated teamwork setup. They take part in most of the body's enzymatic processes, some more actively than others. The uptake of B vitamins depends on gastric acid and digestion.

Polycystic ovary syndrome (PCOS) is the leading cause of infertility and hormone disturbances in women of childbearing age. The condition is often a result of insulin resistance, an imbalance in the sugar metabolism that is typically accompanied by fatigue, abdominal obesity (apple-shaped body), overweight, and an increased risk of cardiovascular disease and type-2 diabetes. It makes perfect sense to stick with a blood sugar-stabilizing diet and to include a chromium supplement that increases insulin sensitivity and helps, indirectly, regulate the hormone balance. As a bonus effect, it becomes a lot easier to obtain and maintain your ideal weight.

Menstrual pain can be quite severe, especially among teenagers and young women, but supplementation with vitamin Dseems to reduce the pain, according to a new meta-analysis that is published in Nutrients. Earlier research has shown that fish oil supplements can do the same. Vitamin D and fish oil primarily work by lowering levels of hormone-like compounds called prostaglandins that cause inflammation and are responsible for the painful cramps in the uterus.