11 And thou mourn at the last, when thy flesh and thy body are consumed,
~ Pr 5:11
Can sin have physical consequences? God created the human body and the human mind alike. He also gave us an instruction manual for the care and feeding of this life. Just like you cannot neglect the manufacturer’s recommendation for car maintenance for too long, so will neglecting our bodies and minds result in unpleasant circumstances.
However, a car can be replaced.
Not all trials and suffering are because of our own sin, but it is sometimes because of the general sinful nature of human beings under the influence of Satan. However, we have a responsibility to do the best we can with what we are given, and God gives us instructions that in general lead to health.