A key component of optimal fertility is obtaining enough nutrients from the food we eat. This is because micronutrients are absolutely essential for hormone production. Without them, our hormones simply cannot do their jobs effectively, which can lead to fertility challenges, typically in the form of irregular ovulation (which often accompanies PCOS and thyroid issues) or a shortened luteal phase (which can prevent implantation or increase chance of miscarriage if your progesterone is low).