Partially hydrogenated oils are added to foods to increase shelf life. This good intention is not consistent with good health. These oils provide fats that are very harmful to the cells of our body. Our cells will try to use these incorrect oils anyway, but the consequences are damage to the blood vessels and lack of needed oxygen to our cells.
HowStuffWorks looks at the HPV vaccine, Gardasil 9, and why it's now been approved for adults.