HB Mag Health Research Team

Post nasal drip happens when mucus builds up in your sinuses and drips down the back of your throat. You feel it as a tickle, a constant need to clear your throat, or a sensation of something stuck. The most common causes are allergies, sinus infections, acid reflux, and dry air. To stop it, you … Read more

You touch your ear and feel a tender bump. It hurts when you chew or yawn. You wonder why a pimple showed up in such an odd spot. The short answer is that ear pimples form for the same reasons as facial pimples — clogged pores, bacteria, and inflammation — but the ear canal has … Read more

A tomato is botanically a fruit because it develops from the flower of a plant and contains seeds. But in the kitchen and under US law, it is treated as a vegetable. This split between botanical science and everyday use is where most of the confusion comes from. Let’s break down exactly what that means … Read more

You leave a dinner with close friends feeling drained instead of energized. Or you drive home from a weekend trip with people you love and feel a wave of sadness. This is called post-social depression, and it is more common than most people realize. The short answer is that social interaction, even good social interaction, … Read more

You notice a white line running across your fingernail and wonder if something is wrong. The short answer is that these white lines, called Mees’ lines or transverse leukonychia, are usually caused by a temporary disruption in nail growth. They can result from illness, injury, or even certain medications, and in most cases they are … Read more

If you are analyzing data and need to measure how spread out the values are, you use standard deviation. The simple rule is: use the population standard deviation when you have data for every single member of the group you care about. Use the sample standard deviation when you only have data from a subset … Read more