Adherence to Natural Laws: Shelton believed that the body is inherently self-healing when provided with the right conditions. He emphasized living in harmony with nature’s laws, including proper nutrition, rest, and emotional balance.

Emphasis on Raw and Living Foods: Central to Shelton’s philosophy was the idea that raw, unprocessed plant foods—such as fruits, soft leafy greens, nuts and seeds—are the most suitable for human consumption. He argued that cooking destroys essential nutrients and enzymes, diminishing the vitality of food.

Food Combining: Shelton popularized the concept of food combining, a practice that organizes meals based on digestive compatibility. He proposed that certain food combinations, such as starches and proteins, impede digestion and lead to poor health.

Simplicity and Moderation: Shelton advocated for simplicity in diet, promoting mono meals (eating one type of food at a time) to enhance digestion and reduce strain on the body. Moderation was another key principle, as overeating was seen as a primary cause of disease.

Hydration and Cleanliness: Proper hydration through fresh, clean water and the consumption of water-rich foods was emphasized. Additionally, Shelton stressed internal cleanliness, advocating for regular fasting to detoxify the body.