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.
This is different than migraine headaches, which usually cause throbbing pain and start on one side of your head. Tension headaches tend to come back, especially when you are under stress. Pain from a tension headache is usually not severe and does not get in the way of your work or social life. A headache that is constant, not throbbing. 2  You usually feel the pain or pressure on both sides of your head. 3  Pressure that makes you feel like your head is in a vise. 4  Aching pain at your temples or the back of your head and neck.