Dearest Lightworkers, this topic was born after years of observations and reading of corresponding literature. You can also add your own concepts to this teaching.
You know, there is basic human feeling - Love. I especially liked one definition of( don't remember exactly the source): "To love somebody is to REVEAL him each moment how precious is he for you."
We could assume, that love is REVEALING. Love is also HEALING.

We also know, that the balance should exist between the love to yourself and love to the other people, other creations, life and eventually whole Universe. If the balance is shattered, you can in some cases or situations refuse to give Love to other creations and Universe, or in the second case,you can refuse to recieve the love yourself.

In the first case your body suffers, and different diseases are created. In the second case, different dramas and challenges emerge in your life.

We can also discuss some details, although this subject has many different levels to cover, as far as differebt levels of life and love energy is involved.

Problems with heart arise when we refuse to give love to closest and dearest members of our family. We can be mad and angry at them any time, but also feel, that love is stronger. But at some point we can refuse that love is stronger... and then heart suffers.

Problem with lungs( like pneumonia) occur when we are forced to communicate with people that we feel we CAN'T love, cause lungs are associated wit energy exchange.

Kidneys are affected in relationships with collegues and partners.

Serious and chronic conditions, as well as injuries and clinical death occurs when love to all creations and Universe is starting to suspend. Injuries are just warnings to stop and rethink your way and attitude.

If you are caught in challenging and dramatic situation,it means that love to yourself is also refused.
To restore balance we should first feel the energy of Love, energy of Healing and revealing. Feel it towards yourself or toward any other creation... Feel it and enjoy it. Then start to restore balance, by acknowledging that all creations equally share this energy.