On July 31, 2014, scientists reported details of the evolution of birds from other theropod dinosaurs. Among the features linking theropod dinosaurs to birds are a furcula (wishbone), air-filled bones, brooding of the eggs, and (in coelurosaurs, at least) feathers.
Vitamin D Deficiency. People who are vitamin D-deficient can suffer some adverse effects, such as being more prone to certain cancers and possibly being affected by depression or other mood disorders, according to studies reported by MayoClinic.com.
As for why these nutrients may ease PMS, Bertone-Johnson suspects that calcium works in the brain to relieve depressive symptoms or anxiety, and vitamin D may also influence emotional changes. Of course, you need adequate calcium and vitamin D for many other health reasons, including the health of your bones.