The tongue is secured to the front of the mouth partly by a band of tissue called the lingual frenulum. If the frenulum is short, it can restrict the movement of the tongue. This is commonly called a tongue-tie. Children with a tongue-tie can’t stick their tongue out past their lower lip, or touch their […]
Animals renowned for their outstanding night vision include owls, cats, tarsiers (a tiny primate in Southeast Asia) — and even the dung beetle. But humans? Not so much. Over time, many people suffer from night blindness, also known as nyctalopia. This condition makes seeing in dim or dark settings difficult because your eyes cannot adjust […]
If you suffer from the throbbing, intense pain set off by migraine headaches, you may well wonder which medicines are most likely to offer relief. A recent study suggests a class of drugs called triptans are the most helpful option, with one particular drug rising to the top. The study drew on real-world data gleaned […]
All of us have an internal clock that regulates our circadian rhythms, including when we sleep and when we are awake. And light is the single most important factor that helps establish when we should feel wakeful (generally during the day) and when we should feel sleepy (typically at night). So, let me ask you […]
