Google is not 100% truthful or 100% accurate.
While Google does strive to provide searchers the most relevant and reliable information, Google search can still return misleading or incorrect results.
The content that shows up in Google Search index when you search Google is written by many other people on their blogs and websites and Google cannot verify that that information is accurate or truthful.
So unless the information is coming from an actual authority website such as with medical advice, then then the content and information may not be 100 % accurate.
So you need to do more research and if for medical advice, always still speak with your doctor about things.
But most medical advice and information on websites is usually pretty accurate and if you're getting the medical information from websites like mayoclinic, kidshealth.org or similar websites then that information can be trusted.
For Google search AI the information is sometimes accurate and truthful, but not always 100% accurate.
Don't always rely on the AI information that is returned to you through Google search or other AI information.
AI can be pretty accurate, but it also pulls information from other websites so always do more research and don't just depend on Google AI information.
I've found a lot of Google AI searches I've done to test it, would return with information that was sometimes dangerous or very inaccurate although it's getting a bit better now, but I still will not 100 percent trust the Google AI or other AI search results.