Nicotinamide, commonly known as vitamin B3, may help the innate immune system kill antibiotic-resistant staph bacteria, the so-called "superbugs". In lab work done with mice and human blood, researchers found high doses of the vitamin increased the ability of immune cells to kill the bacteria by 1,000 times.The discovery opens the door to a new arsenal of tools for dealing with antibiotic-resistant bacterial infections, such as those caused by methicillin-resistant S. aureus or MRSA, that have killed thousands of people around the world. They are increasing in hospitals and nursing homes, and also rising in prisons, among athletes, people in...