ANATOMY

Detailed explanation-1: -New research has found that cold temperatures lower immunity in the nose and make us more susceptible to viruses. A drop in nasal tissue temperature of just 5° C reduced immune response by almost half. The findings help explain why we’re more prone to catching colds and flu during winter.

Detailed explanation-2: -People with a weak immune system have a higher risk of experiencing frequent infections and severe symptoms. They may be more prone to pneumonia and other conditions. Bacteria and viruses, including the virus that causes the infection COVID-19, can have a devastating effect on a person with a compromised immune system.

Detailed explanation-3: -It was concluded that the stress-inducing noninfectious stimuli, such as repeated cold water immersions, which increased metabolic rate due to shivering the elevated blood concentrations of catecholamines, activated the immune system to a slight extent.

Detailed explanation-4: -These specialized cells and parts of the immune system offer the body protection against disease. This protection is called immunity. Humans have three types of immunity-innate, adaptive, and passive: Innate immunity: Everyone is born with innate (or natural) immunity, a type of general protection.