The law of cause and effect is also called the law of "Karma" in the language of Sanskrit, which means "deed" or to do. In the application of the life journey, it comes to implies that human thought, actions, and deeds are all " karmic cause".
Therefore, it is this that tends to set in motion certain circumstances which in turn produce the effect in the same life journey, of the like of, in any actions, there is always a reaction.
Although, there are schools of thought, who doubt any such theory, and the same is true that there are those who are firm believers in this same theory.
Those who believe are often quick to point out that when they come across a certain person in a condition of poor health or undesirable circumstances; that certainly such individual, no doubt, must have trespassed the karmic law as to bring about such adverse condition.
Although, this could be true, that being human, we often tend to occasionally act in such a way as to completely be out of harmony with nature, a state of imbalance of which the level of negativity tends to outweigh that of positivity in life journey.
The same is that there is the principle of ignorance that does not protect anyone from any form of punishment established for this life journey, which, however, has its applications much more severely to the law of creation.

It must, however, be observed that any form of imbalance in the life evolutionary journey, no doubt, has its negative implications of undesirable effects.
Therefore, it cannot be negated that human life is susceptible to any such occasional occurrences.
But one has to be careful not to make the sweeping assumption that any form of illness, for instance, or an undesirable situation is as a result of this, otherwise, this may act as being judgmental or a misconception.
It is important, however, to know that there exists such law of karma or the law of cause and effect, that is a part and parcel of life creation, just to guide and regulate our every movement or journey of life.
This is true, not just to guide but also as not to overdo anything that may result in " imbalance" that could result in an undesirable situation, of the like of the current global " climate change and other issues of life we often take for granted on daily bases.
The reason is obvious because we overdo things without taken cognizant of the concept of limitation. In everything, there is always a limit and when we excessively do things, it results in an imbalance of which nature or even the scripture warn humanity about.

It must be observed that, there is the concept of categories, introduced by St. Thomas Aquiana, such that in everything there is a level or category, that may vary from one individual to the others, of the like of " faith, believe and indeed, of given; we do not do things in the same level or category, there are always differences when measured.

This is to say, in our evolutionary journey, everyone is not in the same level or category of faith and belief and of given, because we are created to be so and we are saddled with the responsibility to discover these laws in our evolutionary journey of which the scripture come to represent.
However, some people have life pigeonholed into tidy compartments of good and bad, and such people also tends to have equal tidy explanations for event or occurrences and will be quick to explain any misfortune by placing blame usually upon others and why not, even upon themselves.
It must be observed that often, obstacles, oppositions, and indeed, problems are not so readily "good or evil" as the scripture has often made us understand, due to our evolutionary journey.
Therefore, they come to serve as opportunities for growth and enlightenment, as to compel us to develop what may be called randomly of common sense along a footpath to spiritual liberation.