Photosynthesis, The Sun and Vitamin D

Photosynthesis is the process used by plants and other organisms to convert light energy from the sun into chemical energy, in the form of glucose, that can be stored and released to fuel the organism. Photosynthesis provides most of the energy necessary for life on earth. Basically, the process of photosynthesis uses light energy to convert carbon dioxide and water into glucose and oxygen to be used as fuel for life. Virtually all life on earth, directly or indirectly, depends on photosynthesis as a source of food, energy and oxygen. It is considered to be the basis for the origin of life.
Light energy from the sun has remained central to the process of evolution from cyanobacteria through to modern man on a cellular level. In human beings, appropriate light energy from the sun is converted to Vitamin D when our bare skin is exposed to the sun. Evidence of Vitamin D receptors in nearly every tissue and cell type in the body demonstrates the continued wide reaching importance of sunlight and Vitamin D in life itself.