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Health Science Insights

Health Science Insights offer the unique perspective of the NHA on a wide variety of health topics:

Topic 1: History and Evolution from Hygiene Society to the NHA

Topic 2: Health and Disease: Unity of Cause and a Modern Hygienic Perspective

Topic 3: Juice Diets, Intermittent Fasting, and Fasting-Mimicking Diets

Topic 4: The Science and Practice of Water-Only Fasting

Topic 5: Nutritional Supplementation

Topic 6: Problems with Milk and Dairy Products

Topic 7: The Impact of Stress on Health And Disease

Topic 8: The Role and Benefits of Sunlight

Topic 9: Protein Requirements and Aging

Topic 10: The Role of the Microbiota in Health and Disease

Welcome to the new home of the National Health Association!
If you are an existing member, you will need to reset your password in order to log in and take advantage of all the great benefits being a member provides—which now includes the ability to update your own contact information (address, phone number, email, upload a picture and much more). Please start by clicking the Register/Log In button and follow the instructions on that page. Once your password is reset, you will use your email address as your username. You no longer have or need a Member Number. Please contact us if you have questions—and thanks for your support!