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On Health and Health Care

Clear Commentary on Current Developments

A photo of Dr. Steven Kanner, MD smiling while seated in his office with a stethoscope around his neck.

Welcome!

Are you interested in medical science and personal health care and want to better understand the rapid advances in, for example, genetics, drug treatments, nutrition or vaccines? This website is for you.

Are you concerned that our health care system is remarkable for poor access, high cost, complexity, and variable quality? You have lots of company.

Here you will find informative and reliable commentary on a wide range of health and health care issues, and occasional just fun or practical topics, by Steven R. Kanner, MD, MSM.

Dr. Kanner is Harvard and MIT educated. He has over fifty years of clinical experience with tens of thousands of patient encounters in his primary care practice, Harvard teaching hospitals, and emergency rooms, as well as deep involvement in public health and health care delivery systems. We believe you will find this website to be accurate and trustworthy. We welcome you.

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May 3, 2026

Community Water Fluoridation: No IQ Harm Seen Over 65 Years

New study covering community water fluoridation and 65 years of follow-up including 5 sets of cognitive tests through age 80 shows no loss of IQ related to fluoride.
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