Secrets of Health by Dr. Kusum Lunia is a health and wellness book centred on vegetarianism, nutrition, lifestyle, and holistic well-being. The book presents vegetarian living as an important component of physical health while also discussing its ethical, mental, and spiritual dimensions.

The book discusses topics such as nutrition, exercise, healthy habits, preventive health, stress management, vegetarian food, and mindful living. Dr. Lunia combines health-related observations with philosophical and ethical arguments in support of a vegetarian lifestyle.