This intervention study has a primary aim to assess omnivorous adult males and females' ability to control their weight over a period of 1 year. The control group will be required to use 90% lean ground beef a few times per week for one year while maintaining their personalized diet plans. The experimental group will have to follow their personalized diets as well, but will be required to substitute mushrooms for meat at least three times per week. Biochemical measures will also be assessed in response to the diet and weight loss.