Natalie Archibald is a 7-year-old girl in Scotland who is being kept alive with four doses of Viagra a day. Natalie suffers from the lung condition primary pulmonary hypertension, a condition that causes abnormally high blood pressure that effects the arteries in the lungs and makes people who suffer from the condition faint and turn blue. Viagra helps Natalie by opening up her arteries and improving blood flow and stops the fainting spells and bouts of exhaustion. Natalie's mother (who had to quit her job as a legal secretary to take care of her daughter) says that now Natalie can "run, jump, and skip" with all of her friends. [Telegraph]