Why is Black Mold Bad (or Dangerous)?

Are you having trouble with mold in your home?

Or have you heard someone talk about how dangerous mold is?

If you’re wondering why is black mold bad, then this guide can help.

Below, we’ll go over the top reason for why is black mold dangerous to your health and also offer a few suggestions on how to prevent your exposure to mold at home.

As you’ll discover at the end of this guide, an air purifier is a great way to protect yourself against airborne mold.

But, if you want to find out more about it now (or bookmark the page), you can check out our guide on the best air purifier for mold and viruses.

It includes everything you need to know to get the right device for your needs.

Now, with that out of the way, let’s find out why black mold is bad and dangerous.

Why is Black Mold Bad and Dangerous?

Silent and Invisible Dangers of Mold

There are many toxins in the environment, especially those lurking invisibly in the air and in damp places.

But why is black mold bad for you?

The answer is that when you can’t see or smell a toxin, you’re more likely to become more seriously ill from prolonged exposure.

The Invisible Dangers of Mold by Dr. Nuzum outlines the dangers of toxic molds in our environment.

This article answers, “why is black mold dangerous”, as it describes the studies that link mold spores to respiratory illnesses, allergic reactions, and even death.

Invisible mold will thrive in humid and warm areas where there is some type of organic material to feed on and a lack of ventilation.

Hidden areas with high moisture levels are the biggest culprits, such as under the refrigerator, behind walls, in your closets, bathrooms, basements, and anywhere there have been water leaks.

And according to Inspectopedia, there are more than 10,000 types of black mold and most people spend 60-90% of their time indoors where black mold flourishes.

That’s why the air inside your home or workplace can be more toxic than outside air; with poor ventilation, mold can build up to unhealthy levels indoors.

Mold in the Air You Breathe

The Mold & Bacteria Consulting Laboratories correlates mold spores in the air to common health issues.

Mold spores commonly found as dust in the home and the workplace are lightweight, float in the air, and are inhaled.

This causes allergic reactions in those with sensitivities.

Mold spores can induce fever symptoms as well as sneezing, red and itchy eyes, runny nose, and skin irritations.

They can also induce asthma attacks in those who have mold allergies.

Every day, mold spores are inhaled both indoors and outdoors.

Most of the time, limited exposure does not cause any health risks. Health problems occur when people are frequently exposed to mold.

Mold Affects Your Mood

If you’re suffering from a mood disorder or mental illness, the Amen Clinic believes one of the most common culprits of brain dysfunction can be exposure to toxic mold.

The Amen Clinic works with “toxic brains” through brain scans and special imaging procedures that provide a unique view of brain functions.

Mold is at the top of the list for causing dramatic and negatives effects on the brain.

Exposure to black mold not only has effects such as allergies, fatigue, and coughing, but it can also have effects on the central nervous system and the brain.

Some of the symptoms include:

  • depression
  • anxiety
  • headaches
  • irritability
  • brain fog
  • lack of concentration
  • confusion

Oddly, many people who go to the doctor for these symptoms are never questioned about their possible exposure to black mold.

Hotels, office buildings, and industrial complexes have all been found to be sources of toxic black mold infestations due to poor ventilation and lack of noticing the issue before it becomes a serious problem.

Research suggests that exposure in your home or workplace can damage your sense of smell, cause memory loss, cause bleeding in the lungs, and even death in infants and the elderly.

Tips for Preventing Mold Exposure

Now that you know the reasons for why is black mold bad, here are some tips for preventing and arming yourself against black mold and its health dangers.

Do’s and Don’ts for Preventing Mold Indoors


  1. Do clean areas that commonly grow molds, such as windows (from condensation), kitchens, and bathrooms, with a water and bleach solution or cleaning product specific for killing mold.
  2. Do check areas that commonly grow mold, such as the basement, under bathroom vanities, around the roof and windows, anywhere there is rust, tile grout, or peeling paint. Other common problem areas are gutters and anywhere wood has been warped.
  3. Do use an air purifier and dehumidifier in areas where there’s moist air, especially in damp basements. The air purifier must have a True HEPA filter to get rid of airborne mold spores. And an ultraviolet light can kill the microbes. Here you can find the best air purifier for mold and viruses.
  4. Do clean out areas of ventilation for appliances as the warm, moist air can grow mold. This includes dryer vents and under refrigerators.
  5. Do open windows as much as you can through the year to let fresh air come in.


  1. Don’t leave old books, newspapers, or wood sitting in damp or dark areas for long periods of time.
  2. Don’t put carpet in bathrooms, kitchens, or basements where mold likes to grow.
  3. Don’t ignore leaky pipes, no matter how minor it may seem. Fix them as soon as possible or mold will likely start to form.
  4. Don’t ignore a musty smell even if you don’t see visible signs of mold. That odor is a good indicator that there’s a hidden problem.
  5. Don’t neglect to use an air purifier or humidifier in damp areas of the home. This combination of devices can help eliminate many old issues.

We hope this information helped you understand a bit more about black mold, how it can affect you, and ways to reduce its presence in your home.

As we mentioned previously, an air purifier is a great way to extract mold spores out of the air so there’s a lower chance of these fungi multiplying indoors.

Air purifiers are also great devices for helping with other airborne contaminants that make indoor air unhealthy to breathe.

To learn more about how air purifiers can help remove pollutants like dust, smoke, bacteria, pet dander, odors, and more, check out our guide on the best home air purifiers that lists the top 10 models and how they work to clean the air inside a home.

We hope you enjoy that resource as well.