From hog hair toothbrushes and cavities packed in linen to rechargeable electric toothbrushes and laser dentistry, dental care has come a long way. Over thousands of years, as the field of dentistry has evolved, research has provided answers to the gross but fascinating science that's behind bad breath and cavities. This comprehensive guide offers readers the chance to learn about the thousands, sometimes millions, of microorganisms that live in people's mouths, the history of oral hygiene, and the many myths, facts, causes, and treatments related to bad breath and cavities.

From hog hair toothbrushes and cavities packed in linen to rechargeable electric toothbrushes and laser dentistry, dental care has come a long way. Over thousands of years, as the field of dentistry has evolved, research has provided answers to the gross but fascinating science that's behind bad breath and cavities. This comprehensive guide offers readers the chance to learn about the thousands, sometimes millions, of microorganisms that live in people's mouths, the history of oral hygiene, and the many myths, facts, causes, and treatments related to bad breath and cavities.

Audisee® eBooks with Audio combine professional narration and text highlighting for an engaging read aloud experience! Your mouth really is filthy! It’s a saliva bath for millions of tiny little creatures that share your food, chew holes in your teeth, and make your breath smell like a garbage truck. From cavities to canker sores, those little creatures can also create some repulsive problems. Learn all about saliva, plaque, and the bacteria that infest your mouth - and find out how to keep that mouth of yours healthy. With close-up pictures and lots of disgusting facts, this book tells all about the gross science behind your body’s functions.

The world is full of stinky smells, such as sweaty feet, dirty diapers, rotting food, and wet dogs. Some smells are so bad, they can make a person gag or run in the opposite direction. In this book, readers will examine what causes bad smells, why some objects smell more than others, and how smells travel. They will also explore how the nose and brain detect and recognize different smells. With high-interest content and special features that include a Myths and Facts and 10 Great Questions to Ask a Specialist sidebars, this engrossing book will attract even hesitant readers.

Bad breath is a common and embarrassing problem that everyone worries about, yet most health professionals still know little about its origins, diagnosis, and treatment. Over the past fifteen years, investigators have studied how bad breath is caused, where the odors originate, and which bacteria and gases are involved. Novel in vitro systems and measurement techniques have been proposed, and clinical studies conducted to compare new and traditional treatments. This illustrated text presents, for the first time, a comprehensive and cohesive science-based approach to bad breath, combining basic research with clinical approaches to diagnosis and treatment. All aspects of the subject are examined thoroughly and critically, including the psychological impact of breath odor and future prospects. The authors draw upon more than thirty years’ combined experience in this field, both in the laboratory and as consultants to thousands of patients in Canada, the US, the UK, and elsewhere.

A New York Times Bestseller A Washington Post Notable Nonfiction Book of 2020 Named a Best Book of 2020 by NPR “A fascinating scientific, cultural, spiritual and evolutionary history of the way humans breathe—and how we’ve all been doing it wrong for a long, long time.” —Elizabeth Gilbert, author of Big Magic and Eat Pray Love No matter what you eat, how much you exercise, how skinny or young or wise you are, none of it matters if you’re not breathing properly. There is nothing more essential to our health and well-being than breathing: take air in, let it out, repeat twenty-five thousand times a day. Yet, as a species, humans have lost the ability to breathe correctly, with grave consequences. Journalist James Nestor travels the world to figure out what went wrong and how to fix it. The answers aren’t found in pulmonology labs, as we might expect, but in the muddy digs of ancient burial sites, secret Soviet facilities, New Jersey choir schools, and the smoggy streets of São Paulo. Nestor tracks down men and women exploring the hidden science behind ancient breathing practices like Pranayama, Sudarshan Kriya, and Tummo and teams up with pulmonary tinkerers to scientifically test long-held beliefs about how we breathe. Modern research is showing us that making even slight adjustments to the way we inhale and exhale can jump-start athletic performance; rejuvenate internal organs; halt snoring, asthma, and autoimmune disease; and even straighten scoliotic spines. None of this should be possible, and yet it is. Drawing on thousands of years of medical texts and recent cutting-edge studies in pulmonology, psychology, biochemistry, and human physiology, Breath turns the conventional wisdom of what we thought we knew about our most basic biological function on its head. You will never breathe the same again.

Kids love gross things, and germs are among the grossest. This engaging volume capitalizes on the grossness factor, while covering the science behind germs, what they are, where they are found, and how they cause diseases. It gives kids the information they need to stay clean and healthy without fearing germs. Readers will learn that most bacteria do not cause diseases, but provide us with food and medicines, and help maintain soil and other ecosystems. This book also cautions against overkill of germs, which can lead to antibiotic resistance and super-bacteria.