If you are between the ages of 18 and 64, you may be interesting in participating in a nutrition and diet study conducted by the University of Virginia. The study will be comparing two different diets. Each phase lasts for 4 weeks with a 4-8 week break. All food is provided for the 4 week diet and compensation is $300.
This study also provides the participant with other pertinent information such as blood pressure, cholesterol, and blood fats.
Centerwatch is a great place to find other diet and nutrition studies that are being done in other states. It also covers studies being administered in many other fields.
There are several other sites which provide information on clinical studies. I have them listed in a previous post.