The health of your spirit is as important as that of your physical body. Your physical, etheric, astral, and mental bodies, complement each other. The layers of the four lower bodies in which the Self is encased are interpenetrating each other, so whatever affects one, affects the other. You can develop a strong and healthy spirit by practicing the virtues of truth, tolerance and peace in everyday life. What you consume at the physical level is as important to the other three bodies. If you habitually indulge in food and drink of the impure type, your astral and mental bodies will likewise be affected. Good, clean thoughts and pure, healthy food and drink help build up an astral body of the finest material. The astral body by nature is sensitive to the outside influences. It answers to the impulses of the higher or lower kind as per its vibrational frequency.
A gross, dense body that is built on coarse, impure matter will readily respond to the lower impulses, and attract to it entities and thoughts of the mischievous kind. Whereas, a body built on finer substance will be well tuned and sensitive to the higher and nobler thoughts, thus rejecting all that is not in accord to the higher frequencies. Purification is imperative if you want to enjoy optimum health at all levels of your being. A healthy being is well-balanced and aligned to the divine Source. Such a person will become more perceptive to the finer and more delicate nuances in life, while eliminating all that is gross and vile. He will remain unaffected by the lower energies around him as long as he is centred in the Light, and observes discipline in life.