I love the cleanliness of your site - it's great. I love your choice of colors, very "green," it gives you a sense of newness (and the ability to start afresh, perfect for a weight loss site).
now, one suggestion that I could make is to make all of the text bigger. A lot bigger. As soon as the page loads, the eye is directly focused on the image (good). Then it sees a bunch of little text and feels overwhelmed (bad). A blog should be about the content primarily, then the look and feel. If you have good content, make that the focus.
good job, awesome start, and I look forward to more.