One of the most successful nutrition plans for weight loss to be introduced in recent years is the Jillian Michaels weight-loss plan. The plan accounts for three major factors which influence weight loss success in the long term: self, sweat and science. The plan recognizes that the process of losing weight is both a physical and a mental one, and aims to provide a gimmick-free plan for lifelong health and fitness. The plan recognizes that all of the conflicting information about nutrition can leave many dieters feeling lost and frustrated, and breaks down exactly what you should eat to lose weight in a steady and sustainable way. The nutrition plan helps people to discover which foods are optimal for their body type and metabolic rate, the number of calories they should eat each day to ensure successful weight loss, recipes fully customized to body type that are delicious and easy to prepare, and tips and strategies for eating out without straying from your plan.

Today Show nutrition expert Joy Bauer has formulated one of the simplest nutrition plans for weight loss available. Her highly popular diet is now an easy step-by-step online diet program which is fully customized for you to get the best possible result. The plan emphasizes plenty of healthy carbohydrates such as whole grains, lean protein, fresh fruit and vegetables – plus a range of delicious and satisfying treats that you can enjoy guilt-free. There are plenty of online tools to help you along the way, including a calorie calculator which will provide you with the nutritional information of thousands of foods to help you make diet-friendly choices; a meal planner and hundreds of healthy recipes to help you get started in the kitchen; and a food log for recording what you eat during the day, so that you can track your weight loss properly. The program offers a free diet profile – participants take a quick and easy quiz and receive a personalized eating plan which is based on the principles of Joy's Food Cures.

The South Beach diet has been enormously popular in recent years, thanks to the endorsement of the diet plan by a number of high-profile celebrities, with more than 5 million copies of the book sold in the US alone. This is considered to be one of the best diets that work. Originally formulated by Dr Agatson, one of America's leading cardiologists, as a diet plan for his heart patients to improve cardiac health, it soon demonstrated its effectiveness as a weight loss plan. Like many recent nutrition plans for weight loss, the South Beach Diet is based on the principles of the GI diet. After an initial period of restricted carbohydrates, the diet slowly reintroduces foods which score low on the glycaemic index, helping to break the cycle of carb binges and emotional eating which many dieters falls into. During this first phase, simple carbs such as cereal, white bread, sweets, cake, alcohol, potatoes and bagels are banned. The diet instead emphasizes low-GI vegetables, lean meat and fish, nuts and olive oil. It is claimed that you can lose between 8 and 13 pounds within the first two weeks, and then a respectable 1-2 pounds every week after that.