Other theories point out that it is usually harmful and may even cause negative side effects because phytoestrogens may displace the woman naturally produced hormones. But it's been debunked by other studies proving that phytoestrogens are not considered foreign objects by the body and therefore are thought to be comparable to the hormones naturally produced from the body. Moreover, it has been discovered that they displace mimic estrogens preventing the breast cancers cells to proliferate. It can also help alleviate problems with cancer of prostate, colon cancer and cardiovascular cancer. Human tests for Pueraria Mirificas as a food supplement product or as functional food, the merchandise have exhibited estrogenic effects. The effects of estrogenic activities include reforming of the epidermis which makes it firmer and younger, healthier hair and breast implant. The main function of human red blood cells or erythrocytes is usually to carry oxygen to several areas of the body. Their natural beautiful red colors comes from a biomolecule called hemoglobin which binds oxygen and occupies the cytoplasm of the cell. Unlike most human cells, red blood cells don't have nuclei or other organelles (the components or subunits of many cells). Their biconcave appearance can clearly be seen with this image which was captured using a scanning electron microscope (SEM). Looking like doughnuts without holes, they're flat and depressed inside center and also have a dumbbell-shaped cross-section. This unusual form is very important for his or her function because it is great for their smooth passage through minor and major veins.