Zinc increases the synthesis of the growth hormone and its number of receptors; thus, it is an important mediator in the binding of this hormone to its receptor. Found in a large quantity in the pancreas tissue, zinc has a part in the regulation of the effect of insulin.

What vitamins can cause irregular periods?

Top up on vitamin D A 2015 study found links between low levels of vitamin D and irregular periods. Irregular periods are a common symptom of polycystic ovary syndrome (PCOS).

What can throw off periods?

• stress.
• low or high body weight.
• polycystic ovary syndrome (PCOS)
• hormonal contraceptives.
• chronic conditions such as diabetes or celiac disease.
• thyroid issues.
• menopause.
• pregnancy.