Key Takeaways:

• Presents fasting as one of the central therapeutic tools of Natural Hygiene, arguing that suspending digestion allows the body to redirect energy toward detoxification and repair.
• Compiles case examples and physiological arguments claiming that properly supervised fasts can help reverse chronic conditions ranging from digestive disorders to arthritis.
• Warns against unsupervised, poorly planned, or overly prolonged fasts, insisting on gradual preparation and post‑fast refeeding to avoid harm.
• Strongly influences later natural‑health communities and fasting clinics, even as mainstream medicine remained skeptical of such long fasts.