go on regular checkups, and try to be as clean as possible.

There is a little catch in here. Health check up are now one of the major money making syndicates operating in the name of health. They are offering free services and at at the end comes up with some kind of diagnosis. One of my friends dies after one year after went to a free health check up...

It is alwsys better to avoid any kind of risk and take your own way towards a healthier tomorrow.