Houston's Heat: Is Humidity Inflaming Liver Mold?

By Franklin Everett Shaw

January 10, 2026

The air in Houston hangs heavy, thick with humidity. It’s not just uncomfortable; it’s a breeding ground for mold, and with that, comes the risk of aflatoxin contamination in our food. We can’t control the weather, but we can control how we protect ourselves and our families. This isn’t about scare tactics; it’s about taking proactive steps to ensure a healthier home and a safer food supply.

Let’s talk about aflatoxins. These are toxic substances produced by certain molds (Aspergillus flavus and Aspergillus parasiticus) that can grow on crops like corn, peanuts, and tree nuts. High humidity, like we experience in Houston, creates the perfect environment for these molds to thrive, especially if food isn’t stored properly. Aflatoxin exposure can lead to liver damage, immune system suppression, and even cancer with prolonged exposure.

So, what can Houston residents do? It boils down to three key areas: proper food storage, smart sourcing of local produce, and proactive indoor air quality management.

First, food storage is paramount. This isn’t just about keeping your pantry organized; it’s about preventing mold growth.

Airtight Containers are Your Best Friend: Ditch the flimsy plastic bags and invest in airtight containers for grains, nuts, seeds, and dried fruits. Glass or BPA-free plastic containers with tight-fitting lids are ideal.
Cool, Dry, Dark: Store these containers in a cool, dry, and dark place. The pantry is usually the best bet, but avoid storing food near sources of heat or moisture, like the stove or dishwasher.
Refrigerate Susceptible Foods: Peanuts, cornmeal, and other susceptible foods should be refrigerated, especially after opening. This significantly slows down mold growth.
Inspect Regularly: Don’t just set it and forget it. Regularly inspect your stored foods for any signs of mold, discoloration, or unusual odors. If you see anything suspicious, discard the entire container.
Buy in Smaller Quantities: Resist the urge to buy in bulk, especially for items you don’t use frequently. Smaller quantities mean less time for mold to develop.

Consider this scenario: You buy a large bag of cornmeal for making cornbread. You use some, then leave the bag open in your pantry for several weeks. The Houston humidity seeps in, and mold starts to grow. You might not see it at first, but the aflatoxins are there. By using an airtight container and storing the cornmeal in the refrigerator, you drastically reduce the risk.

Next, let’s discuss sourcing local produce wisely. Supporting local farmers is great, but it’s crucial to be aware of potential risks.

Know Your Farmer: Build relationships with local farmers at farmers’ markets. Ask them about their growing practices, pest control methods, and storage procedures.
Look for Quality: Inspect produce carefully before buying. Avoid anything that looks bruised, damaged, or moldy.
Ask About Testing: Inquire if the farmer tests their crops for aflatoxins. While not all farmers do, it shows a commitment to food safety.
Wash Thoroughly: Always wash your produce thoroughly before eating, even if it looks clean. This can help remove surface mold spores.
Buy in Season: Buying produce in season often means it’s fresher and less likely to have been stored for extended periods, reducing the risk of mold growth.

Imagine you’re at the Houston Farmers Market. You see some beautiful peaches, but some have slight bruises. Choose the ones that are firm and unblemished. Ask the farmer about their storage practices. A reputable farmer will be happy to answer your questions.

Finally, let’s address proactive indoor air quality management. Controlling the humidity in your home is crucial.

Dehumidifiers are Essential: Invest in a good quality dehumidifier, especially for areas prone to moisture, like the kitchen and bathrooms. Aim for a humidity level between 30-50%.
Air Purifiers with HEPA Filters: Air purifiers with HEPA filters can help remove mold spores from the air. Look for models specifically designed to capture mold and other allergens.
Regular Cleaning: Clean your home regularly, paying special attention to areas where mold is likely to grow, such as bathrooms, kitchens, and basements. Use a mold-killing cleaner.
Proper Ventilation: Ensure proper ventilation in your home, especially in bathrooms and kitchens. Use exhaust fans when showering or cooking.
Address Leaks Promptly: Fix any leaks in your roof, plumbing, or windows immediately. Leaks create the perfect environment for mold growth.

Consider this: You live in an older home in the Heights neighborhood. The humidity is consistently high, and you notice a musty smell in your bathroom. Investing in a dehumidifier and regularly cleaning the bathroom with a mold-killing cleaner can prevent mold from taking hold.

Now, let’s talk about recognizing potential symptoms. Aflatoxin exposure can mimic other liver issues, making it difficult to diagnose.

Fatigue: Persistent and unexplained fatigue.
Jaundice: Yellowing of the skin and eyes.
Abdominal Pain: Pain or discomfort in the upper right abdomen.
Loss of Appetite: Unexplained loss of appetite.
Nausea and Vomiting: Frequent nausea and vomiting.

If you experience these symptoms, consult a doctor. Be sure to mention your concerns about potential aflatoxin exposure.

What are some common mistakes developers face? Well, in this case, it’s homeowners and renters.

Ignoring the Problem: Many people simply ignore the potential for mold growth, assuming it won’t happen to them.
Improper Cleaning: Using the wrong cleaning products or not cleaning thoroughly enough can actually worsen the problem.
Poor Ventilation: Failing to ventilate properly can trap moisture and create a breeding ground for mold.
Overlooking Leaks: Ignoring small leaks can lead to significant mold problems down the road.
Self-Diagnosing: Attempting to self-diagnose and treat potential aflatoxin exposure can be dangerous.

Here are some Houston-specific resources for mold testing and remediation:

Texas Department of State Health Services (DSHS): Provides information on mold and indoor air quality.
Local Mold Inspection and Remediation Companies: Search online for reputable companies in the Houston area. Be sure to check their credentials and reviews.
Harris County Public Health: Offers resources and information on environmental health issues.

Remember, preventing aflatoxin exposure is an ongoing process. It requires vigilance, proactive measures, and a commitment to maintaining a healthy home environment. By following these steps, Houston residents can significantly reduce their risk and protect their families. Don’t wait for the problem to arise; take action today.