We're surrounded by food portions we've been led to believe are normal-64-ounce sodas, personal pizzas large enough to feed several people, and steaks and pastas that fill an entire plate. No wonder obesity rates have reached an all-time high. We eat oversized portions, gain weight and try the latest fad diet, which only adds to our confusion about how to lose weight.

Nutritionist and portion-size expert Dr. Lisa R. Young says the solution is simple: Eat foods you love in reasonable portions and you will lose your excess weight and keep it off for good.

Finally Full, Finally Slim shows you how to permanently lose weight by right-sizing your portions without eliminating entire food groups or staring at an empty plate. Within these pages, Dr. Young outlines thirty days' worth of simple changes to help you shed pounds and provides a portion plan that ensures you will feel satisfied. She expertly describes the relevance of diet to health and steers you toward whole foods and away from clever marketing claims that may be secretly sabotaging your weight-loss efforts. You'll learn useful strategies for how to eat out, enjoy special occasions and indulge in a favourite treat without tipping the scale.

And because weight loss is about more than food, Dr. Young addresses the whole person-your mind-set, environment, habits, and life-through research-based advice. You'll learn how relationships, gratitude, self-compassion and sleep patterns, for instance, can make a difference.

Portion control outlives all fad diets because it isn't a diet. It's a lifestyle.