Forests are essential for life on earth. Three hundred million people worldwide live in forests and 1.6 billion depend on them for their livelihoods. Forests also provide habitat for a vast array of plants and animals, many of which are still undiscovered. They protect our watersheds.
The other cause is migraine headaches that can affect some women prior to their period following ovulation. Nausea typically accompanies migraines regardless of the cause of the headache. In this case the headaches are caused by the hormonal imbalance and they can be completely debilitating along with the nausea.
The exact connection between the menopause and headaches is somewhat unclear. However, much of the blame can be placed upon the hormonal changes that the body goes through during the menopause. The hormones that are affected the most during the menopause are oestrogen and progesterone. Oestrogen is thought to cause blood vessels to dilate, while progesterone causes them to tighten. As the level of these hormones fluctuates, the blood vessels are constantly expanding and contracting.