A group of Amish farmers in northern Indiana has been found to have one of the lowest rates of allergies and asthma in the world. Studies have shown that only 1-2% of Amish children develop allergic diseases, compared to 8-10% of children in general.
Researchers believe that the traditional farming practices of these communities may hold the key to understanding and preventing allergic diseases. The “hygiene hypothesis” suggests that early childhood exposure to microbes plays a crucial role in developing a healthy immune system, which can protect against allergies.
A study by researchers found that Amish children are exposed to more beneficial bacteria through their farm dust, which is believed to stimulate their immune systems and prevent the development of allergic diseases. In contrast, Hutterite children, who also live on farms but have less exposure to animal barns, had a higher rate of allergic sensitization.
The researchers are now working to identify the specific substances in Amish dust that provide this protective effect and could potentially be used to create treatments for young children. While it’s unlikely that every family can replicate this environment, experts believe that learning from these communities will help develop effective strategies to prevent allergic diseases, which affect millions of people worldwide.
The discovery has significant implications for the prevention of allergic diseases, which reduce quality of life and have a major impact on public health. By studying the traditional farming practices of the Amish, researchers hope to uncover the secrets behind their low rates of allergies and asthma.
Source: https://www.washingtonpost.com/health/2025/07/20/allergies-amish-hygiene-thesis