This is one question that may never get a good and accurate answer.
It can really bug some peeps especially those who are conscious of their health while others do not really give a damn about it and a few are too scared to even think about it.
Yet it is an important question so much so that organizations, employers and academic institutions always want an answer before offering any form of service though the motive is more about covering themselves than an interest in your health status.
There are so many diseases in this world that it is almost impossible to find one person who is 100% fit.
There are schools of thought that encourage the bliss that comes from ignorance because there are cases where the pyschological trauma of the ailment kills faster than the disease itself.
However most diseases are better handled when they are discovered early.
This will be an introduction to silent medical killers.
It is said that health is wealth, so watch yours.
So its important to visit a doctor regularly even when you feel healthy for routine checks.