Zygote with Visible Nuclei of Egg and Sperm
Embryo 56 Day Old Heart and Blood Vessel
Obese man with visible Brain Eating a Cookie
Infant Eye cross section
Female Eating with Visible Digestive System
DNA Methylation Test for Breast Cancer
Male with visible Anatomy showing Parasympathetic Nervous System Activation
Vitamin B9 (Folic Acid) Molecule
Fit Kids Have a Better Memory
Embryo 26 Day Old with Visible Nervous System
Galactose Molecule, blue
Obese Man with visible Adipose Tissue Eating a Cookie
Women who smoke often have trouble becoming pregnant, and a higher rate of miscarriage than nonsmokers. In men, smoking is known to lower sperm count. A study in China found that men who smoked 20 or more cigarettes a day had a 60% higher risk of suffering from impotence. Babies born to smoking mothers are more likely to be stillborn, or born prematurely.
Smoking threatens vision, increasing the risk of macular degeneration and cataracts. It slows healing, and causes skin to lose its elasticity prematurely. It also affects bone density, increasing the risk of fractures. Interference with circulation in a smoker`s brain may be one reason that heavy smokers have a 157% higher risk of getting Alzheimer`s disease, and a 172% higher risk of other dementias.