A Broad View
Actually cancer and all disease has it's cause in all of the harmonics of existence that filters the flow of pure awareness.
Ponder that for a moment.
The major harmonics of our current existence are physical, mental, emotional and spiritual and there are many flavors in between that are holographic and fractal in their informational construct.
Each harmonic is interconnected. Some focus only on physical while others may only see emotional. However the harmonics are holistic and interconnected. Our lives can be leveraged at any level but must be understood at all levels through a lens of balance (coherence).
We see much of the emotional leveraging in The New Medicine from Gerd Hamer's work. EFT is another example of emotional leveraging. We see much of the physical paradigm through work such as Max Gerson. We see the mental connection through such works as Bruce Lipton's Biology of Belief, and spiritual paradigms can be seen as a leveraging tool in The Sedona Method. Working in each of these paradigms can leverage a disease state to a state of wellness. Each harmonic, when leveraged, will in turn influence the entire harmonic array, bringing about a connected and holistic change. Through understanding and awareness at these levels, the information becomes coherent and thus balanced. We call this healing.
Seen from another angle, we can see innate intelligence being interfered with through incoherent choices within a particular paradigm. When belief systems are misaligned this causes stress (interference). When we react out of alignment to our environment this causes stress. This in turn spawns an emotional counterpart of imbalance as part of the interconnected cascade (stress actualized from mind to body). This then sets up a feed back loop. This loop must be interrupted so that stress is removed and balance is achieved.
The key to understand is that we interrupt innate intelligence through misaligned choices. It is the innate intelligence which holds balance within our being. When we interfere with this through certain thought patterns and stored thought patterns, we create a disease. These thoughts in turn create chemical reactions we call emotions which in turn create imbalances within the body.
This is the powerful body mind equation.
Remove the interference and healing occurs.