How do we decide which species to favor and which to spurn? The law protects dwindling populations of snail darters, but does it apply to nature's creatures that we consider pests, like weeds, or flesh-eating bacteria.

A new study tries to show that not eating breakfast increases your risk of dying from cardiovascular disease. The study has significant limitations, and so it remains unanswered whether breakfast is the most important meal of the day.

Is there a magical prescription for how much exercise and activity eliminates the increased risk of premature death, which comes from sedentary behavior? A new paper takes a swing at an elusive target. Spoiler alert: This is an area that continues to defy precision.

Tule fog is a very dense fog found in California's Central Valley, and it's the source of many traffic accidents and fatalities annually. But over the last 30 years Tule fog is seen less often, and for shorter times. Apparently, it's not a result of climate change but of improving air quality.

There are 14 new HIV infections in an outbreak that's hit homeless drug users in the Seattle area. These are the predictable consequences of a feckless public health policy, and one that lacks compassion.

There are reports that as little as one piece of bacon a day will increase your risk of colon and rectal cancer. A closer look at the study suggests that while bacon is certainly a risk factor in being a pig, its impact on humans may not be as great as the media claims.

Penetrating traumas take on a unique trajectory. They can be erratic, asymmetrical and variable in depth and extent. So real estate in the body, and good fortune, matter most.

Vaxart Inc., a San Francisco based vaccine biotech, just announced that it will begin dosing subjects in a Phase 1b study company's bivalent oral experimental vaccines against norovirus -- the cause of the so-called "stomach flu." Everyone should wish them well.

The formation of air bubbles is the reason joints in our necks, fingers, and other body parts "crack" or "pop." The young woman's stroke was almost certainly a freak accident.

The maker of Keto Breads, allegedly "the world's healthiest bread," claims that all the other bread out there causes autoimmune disease and leaky gut syndrome. The former claim is risible and the latter is "not a recognized medical diagnosis."