Read about signs and symptoms of various types of cancer, such as bladder, kidney, prostate and skin cancer; the difference between a heart attack and stroke; six reasons to visit a neurologist — headaches, dizziness, numbness or tingling, movement problems, weakness or loss of grip, and memory problems; why it is important to see a doctor for orthopedic injuries, even if you are not an athlete; 20 tips for a healthy pregnancy; what you need to know about cholesterol and why it matters for your health; and the risks associated with vaping (the use of electronic cigarettes).