There are no official numbers for the optimal levels of testosterone, but certain medical laboratories use the following reference values for typical total serum testosterone, measured in nanograms ...

From the air to our blood ...

Your doctor says everything looks fine, but you still feel terrible. The problem might not be your health but how labs define “normal.” Understanding the difference between normal and optimal could ...

You may have noticed a plethora of reels and posts on social media claiming cortisol “spikes” are harmful. Some warn against drinking coffee on an empty stomach or even doing certain exercises lest ...

Scientists have found an ideal frequency.

Oxygen is critical to life. When levels of oxygen change, it can have immediate and lasting impacts on a person's health.

Robert Burakoff, MD, MPH, is a board-certified gastroenterologist who serves as vice chair of Ambulatory Services at Lower Manhattan Hospital and professor of medicine at the Weill Cornell Medical ...

January was a month of records and extremes on both ends of the thermometer across Canada. This was the second month in a row the country saw a temperature drop below -50°C, and we witnessed some ...

Kristi is a registered nurse with over 15 years of experience caring for both adult and pediatric patients at the beside. She worked as a Pediatric Intensive Care Unit RN for the first 4 years of her ...

In a stunning upset, Norwegian Anna Odine Strom flew a jaw-dropping 101 meters (approximately 331 feet — the length of 11 school buses) in her second jump to snatch the Olympic champion title from ...