Flu and Colds: Why They Feel Worse at Night
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Why Do Cold and Flu Symptoms Worsen at Night?
Table of Contents
what’s Happening: The Rise of Flu and Colds in Spain
During this time of year in Spain, the flu and colds are widespread. The colder weather encourages people to spend more time indoors, where the air is drier and close contact increases, facilitating the transmission of viruses.
The season also coincides with increased social gatherings, further raising the risk of contagion. Temperature fluctuations between warm indoor environments and cold outdoor air can temporarily weaken defenses,making it easier for viruses to take hold.
Recent reports indicate that the flu has reached its peak infection rate in Spain. While the growth rate is slowing, providing a slight respite during the Christmas holidays, hospitalizations continue, even causing strains on emergency rooms.
Beyond the flu, common colds are also prevalent, presenting symptoms like mucus, cough, headache, sneezing, fever, and muscle pain, often requiring medication and medical attention.
Why Do Symptoms Intensify at Night? The Biological Description
Many people experiencing colds or the flu notice a notable worsening of symptoms at night. This isn’t simply a matter of perception; there are several biological factors at play.
- Cytokine Release: Your immune system releases cytokines – proteins that help fight infection. Cytokine levels naturally rise throughout the day, peaking in the evening. This increase contributes to fever,fatigue,and othre flu-like symptoms.
- Cortisol Levels: Cortisol, a hormone with anti-inflammatory effects, is typically highest in the morning and lowest at night.Lower cortisol levels at night mean less suppression of inflammation, allowing symptoms to feel more pronounced.
- Histamine Levels: Histamine, involved in allergic reactions and immune responses, can also increase at night, contributing to congestion and runny noses.
- Body Position: Lying down can exacerbate congestion, as mucus pools in the sinuses and airways, making breathing more arduous.
- Reduced Distraction