From Jane Yau's Blog : The Essence of Mother Nature - Spirulina

The healthy eating pyramid is a nutrition guide developed by the Harvard School of Public Health, suggesting quantities of each food category that a human should eat each day. The healthy eating pyramid is intended to provide a superior eating guide than the widespread food guide pyramid created by the USDA.

Read More : 

http://janegano.blogspot.com/the-essence-of-mother-nature-spirulina.html