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Mould in the Home: Health Effects and Practical Steps
Updated by Nordens on 4 October 2026. This editorial update replaces earlier unsupported claims about mould toxicity and supplements.
Damp patches and a musty smell deserve attention. Mould grows where moisture is available, including around leaking pipes, roofs and windows. Addressing the source of dampness is an important part of caring for your home.
What mould exposure can mean for health
Some people experience no symptoms; others develop a blocked nose, irritated eyes, rash, coughing or wheezing. People with mould allergies or asthma may react more severely. Those with weakened immune systems or chronic lung disease can be at risk of lung infections.
The original article linked to a South African woman’s account of persistent symptoms and finding mould. Her experience should not be treated as a confirmed diagnosis or evidence that mould explains everyone’s fatigue, thyroid problems or other symptoms. Discuss persistent symptoms and possible exposure with a healthcare professional. Seek urgent care for severe breathing difficulty.
Practical moisture control
- Repair leaks and investigate recurring damp patches.
- Ventilate bathrooms and kitchens; use extraction fans that discharge outdoors.
- Dry water-damaged materials promptly, ideally within 24–48 hours.
- Monitor humidity and use a dehumidifier when needed.
Cleaning and professional help
Clean affected hard surfaces with detergent and water, then dry thoroughly. Porous materials such as mouldy ceiling tiles or carpets may need replacement. Do not simply paint over mould.
For extensive damage, suspected hidden growth or sewage contamination, seek an experienced remediation professional. Ask for medical advice before attempting cleanup if you have health concerns. Follow cleaning-product instructions and never mix bleach with other cleaners.
Where Nordens products fit
This article does not recommend supplements to treat mould-related illness or replace moisture remediation and medical care. Rewind’s formulation contains laboratory-confirmed nanoparticle sized clinoptilolite. Rewind is not intended to diagnose, treat, cure or prevent disease.
For formulation information and label guidance, see the Rewind product page. Its particle size is a formulation fact, not evidence that it removes mould toxins.
