We now have the potential to banish the genes that kill us, that make us susceptible to cancer, heart disease, depression, addictions and obesity, and to select those that may make us healthier, stronger, more intelligent. There is now a DNA altering serum able to analyze more than a thousand traits at once, those linked not just to a person's health but to enhancements - genes that influence height, intelligence, hair, skin and eye color, and athletic ability.