You only say they prevent cancer but how do you know? You only are regurgitating what you are told by big pharma and you doctor who are openly profiting on sickness and injections...
here is proof of "pushing for profits"...
21%
This is the 2015 profit margin that Forbes estimated for the healthcare technology industry, making it by far the most profitable industry of all, with major and generic pharmaceutical companies leading the way. The company really setting the pace is Gilead Sciences (NASDAQ:GILD), which has a profit margin of nearly 53% over the last 12 months.
Of the $1.05 trillion revenue for the global pharmaceutical market, nearly half of it -- roughly $515 billion -- comes from the U.S. and Canada. However, the two countries make up only around 7% of the total world population.
$1.05 trillion-That's the total revenue of the global pharmaceutical market. To put that number in perspective, it's roughly one-quarter of what the U.S. federal government will spend in 2016
https://www.fool.com/investing/2016/07/31/12-big-pharma-stats-that-will-blow-you-away.aspx