What makes a valuable health blog and how the the way to find the reliable and contain the information needed? How can I know the information is in a health blog site is valid and correct for my condition? Who writes this stuff anyway? A blog is basically a web-log which is information from many sources and put in site-specific information provided. A Health Blog is a great place to hang out if you’re talking to yourself with a healthy lifestyle and intend to follow the advice in your daily life to follow.