Two-thirds of new HIV infections happen in young adults. That is not anything to laugh about. Last year 51 million people died. The leading cause of death are diseases of the circulatory system. It kills about 10 million people each year.
Cancer is another big killer.
It kills about 6 million people every year. Almost all the Cancer victims in the world live in developing countries. Yet another big killer is smoking. It kills 6 people every minute and about 3 million people every year. That is more than 3 times the number killed today.