In the struggle for optimal indoor comfort, humidity often remains an overlooked villain. We tend to associate excessive relative humidity levels with discomfort, but its detrimental effects on our health go far beyond clammy skin and the muggy atmosphere it creates.

From relentless summer heat to poorly ventilated spaces, high humidity can pave the way for an array of health concerns that extend beyond a mere inconvenience. So, today I’m going to delve into the hidden hazards of excessive humidity and the lesser-known negative side effects of humidity on the human body. So,

How Does High Humidity Negatively Affect Your Body?

High humidity levels can affect our body in various ways. Too much humidity hampers your body’s ability to cool down, making you feel sticky and uncomfortable. It can also worsen symptoms related to respiratory conditions, trigger asthma attacks, and promote the growth of mold and dust mites, leading to allergies and difficulty breathing.

Additionally, prolonged high humidity disrupts your skin’s natural balance, causing breakouts and irritation. It can even interfere with your sleep, making it harder to get an undisturbed rest.

Overall, high humidity is a real mood dampener, impacting your comfort levels, respiratory health, skin, and sleep.

But we can’t live without humidity, and it’s crucial to strike the right balance. In fact, using humidifiers to raise low humidity levels is often the solution to a wide variety of issues. However, it is equally important to know how to handle high humidity effectively, and the key lies in recognizing the signs of its negative impact on your body.

So join me below as I delve deeper into the ways that humidity can wreak havoc on our bodies and overall health.

The Negative Effects Of High Humidity On The Body

Impaired Thermoregulation

One of the most noticeable and immediate negative effects of high humidity is its impact on our body’s ability to regulate temperature.

When the air is saturated with water vapor, what is known as humidity, it changes the way liquids evaporate. This means that when we sweat, the sweat evaporates more slowly from our skin, making it far more difficult for the body to cool down properly. 

As a result, the heat from the body does not dissipate as easily as it should, and we may experience an increased heart rate, feelings of fatigue, discomfort, and shortness of breath.

In more extreme cases, high humidity can cause your body to overheat and increase the risk of heat-related illnesses, such as heat exhaustion or heatstroke.

Respiratory Discomfort from too much humidity

Respiratory Discomfort

In addition to its impact on your body’s ability to thermoregulate, high humidity can also have distinct adverse effects on your respiratory system. In other words, high humidity negatively impacts the way you breathe and exacerbates respiratory conditions.

To start, high humidity levels can make the air feel heavy and dense, giving you the sensation that breathing is more laborious. This is particularly true for individuals with pre-existing respiratory conditions such as asthma or chronic obstructive pulmonary disease (COPD). 

Additionally, high humidity creates an environment that is favorable for the growth of bacteria and other microorganisms. These microorganisms thrive in air saturated with moisture, and the resulting microbial activity can increase the risk of respiratory infections.


Although high humidity itself does not directly cause dehydration, it can contribute to an increased risk of dehydration. As mentioned before, humid air affects the body’s natural cooling mechanism by making it harder for sweat to evaporate off the skin’s surface. As a result, we lose our ability to perceive sweat loss accurately in high humidity.

In other words, high humidity can cause people to not feel the need to drink water or replace lost fluids as often as they should, resulting in a significant risk of dehydration.

Impact on Skin Health

High humidity, coupled with increased perspiration, can have negative effects on skin health, leading to various issues that can impact the overall well-being of our largest organ.

When sweat stops evaporating efficiently, it remains in contact with our skin’s surface for far longer, where it mixes with oils, dirt, and dead skin cells, leading to clogged pores. This clogging can contribute to the development of skin breakouts, inflammation, redness, and the formation of rashes and blemishes.

high humidity can cause a bad sleep

Impact on Sleep Quality

Finally, high humidity can significantly impact the quality of your sleep. When the air is laden with moisture, it creates an oppressive and uncomfortable environment, making it a challenge to breathe properly, leading to a feeling of restlessness.

High humidity makes it harder to fall asleep initially by generating a sticky and clammy sensation on the skin. But, once asleep, high humidity can disrupt the sleep cycle, causing frequent awakenings throughout the night. Resulting in waking up feeling fatigued and unrested.

High Humidity Is Detrimental To Your Health

While we often associate high humidity with discomfort and a general sense of stickiness, its effects on our bodies extend far beyond superficial inconveniences. From impaired thermoregulation and respiratory distress to dehydration and damaged skin, as well as sleep disorders, high humidity can have a significantly detrimental effect on our health and well-being.

There are many simple solutions for dealing with high humidity in your home. The first is a dehumidifier,  whose sole purpose is to remove excess humidity in the air. If you live in a hotter climate, look to your air conditioner for relief. Air conditioning has the added side effect of reducing the level of humidity in your home.

Whether you’re struggling to breathe in a stuffy room or experiencing unexplained symptoms, understanding the impact of high humidity is the first step in the path towards reclaiming control over the air we breathe and the long-term health effects it can have on your body.