Dr. Rovenia M. Brock has joined "The Early Show"'s "Early Gets Down2Size" series as a weight life coach.
Brock, also known as "Dr. Ro," is an award-winning health journalist and television personality known for her easy-to-apply diet, fitness, and health tips for women and families.
According to her official Web site, she has been a leading nutrition coach for over tow decades, she was recently named by More magazine as one of America's top-five nutritionists.
Brock holds a Ph.D. in Nutritional Sciences from Howard University and is author of the best-selling "Dr. Ro's Ten Secrets to Livin' Healthy."
Having survived the loss of her mother at age 9 to stomach cancer, she has researched and written extensively about how to break bad health habits, from eating high-calorie comfort foods and resisting exercise, to giving up on health goals and taking on the negativity of saboteurs.
Brock says it takes only three weeks to form a new habit -- an important note to women striving to replace bad habits with new healthy behaviors.