Tag: Respiratory infections

While the sight of blood in your saliva or sputum can be alarming, it's often a symptom of a treatable condition. Understanding **why am I spitting out blood** and identifying the source, whether from the mouth, throat, or lungs, is the crucial first step toward proper diagnosis and care.

According to researchers at Mass Eye and Ear and Harvard Medical School, cold temperatures can significantly inhibit the nose's immune response, making it easier for respiratory viruses to cause infection. So, can cold air in the house make you sick? The answer involves several biological and environmental factors that go beyond simple temperature.

Experts estimate that over one billion people worldwide have low vitamin D levels, a condition that can weaken the immune system and potentially lead to flu-like symptoms. Understanding the connection between your vitamin D status and how you feel is vital for proper health management.

According to decades of CDC data, January is consistently the deadliest month in the United States, a pattern observed globally in temperate climates. This annual mortality peak is not random and prompts a critical public health question: **Why do so many people pass away in January?**