Our human Karma is quite unique, just as what we perceive is also different. For eg: A human being sees water as water; a ghost sees water as blood; heavenly beings see water as crystal; a fish sees water as its home, and to leave it is equal to death.
Sakyamuni Buddha originally attained to state of Suchness, where sickness are absent. But because He wanted to liberate people from the cycle of Rebirth, He has to present himself as a normal being with a conditioned body that is subjective to sickness. All holysages experience bodily changes (sickness). Although when they are sick, their mental states are always clear, pure and blissful.
Even as we uphold precepts in this life, sometimes we will also incur bad karma and become sick. Just because we fell sick while upholding precepts, we should not be discouraged to continue this practice. While we are upholding precepts and still fall sick, this is a sign that our past bad karma as lessened. It is an early sign that our karma is diminishing.
Behaving proud and arrogant in the past life will result in being born despicable and lowly in this life.
Those who ill-treat animals in the past or in this present life will meet with many sickness in life.
