Controlling, increasing, decreasing, preserving or destroying the hot, cold, dry, airy, watery, thick, thin, nutrient (building, cleansing) and or poisonous nature, substance, fuel of the BODY every STRUCTURE cell, tissue, nerve, gland, organ, bone, muscle, artery; hormone, antibody, blood, enzyme, acid, urine stool FUNCTION digestion, respiration, circulation, reproduction, locomotion, immunity healthy, diseased stone, tumor, cancer, virus, etc. via diet: food (animal, plant), herbs, exercise, sun, earth and spiritual practice is the science and combined natural self-healing practices of Western Naturopathy, Traditional Chinese Medicine and Ayurveda (India) that maintain health, prevent and cure most disease.

Most disease can have several causes (poor diet, drugs, sedentary lifestyle, climate, etc.). Poor diet tends to dominate, and is many times curable if not too severe solely via correct diet (animal, plant foods, herbs), which is why I and others I counseled were able to CURE:

GIRD, heartburn, stomach flu, body odor, eczema
Anal fissure, Irritable Bowel Syndrome, common cold
Crohn's, anemia, miscarriage, impotence
Atherosclerosis, high blood pressure, angina, obesity
Psoriasis, rashes, tumors, cancer (breast, pancreas)
Insomnia, yeast, bladder infection, anxiety, sinusitis
Plantar Fasciitis, arthritis, neuralgia, edema, cellulite
Attention Deficit Disorder, poor vision

Correct diet varies as many diseases (anemia, arthritis, insomnia, PMS, dysmenorrhea, infertility, impotence, GIRD, etc.) can have multiple dietary causes. The same foods, herbs that help cure one disease may worsen another.

Hot and Cold Health: Handbook of Natural Medicine, East and West - heftet, Engelsk, 2003