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.
Hormones are responsible for many headaches women experience, sometimes called 'menstrual migraines'. Headaches in women, particularly migraines, have been related to changes in the levels of the female hormone oestrogen during a woman's menstrual cycle. Oestrogen levels drop before the start of monthly bleeding. Premenstrual migraines can happen when the hormones oestrogen and progesterone drop to their lowest levels each month.