The domain name extensions associated with reliable health information typically include:
1. .gov: Websites with this extension are usually government-run or government-affiliated, providing trustworthy and accurate health information backed by official sources.
2. .org: Organizations such as non-profits, universities, and research institutions often use this extension for their websites, offering credible health information and resources.
Both .gov and .org domain extensions are commonly associated with reliable health information due to the credibility and expertise typically associated with government agencies and established organizations in the healthcare field.