If you have never heard of Zone Diet, it would perhaps interest you to note that this is yet another diet plan, meant to correct your daily food intake and give you correct amount of nutrition. Developed by Barry Sears who is also the author of the famous book “Enter the Zone”, Zone diet is based on the 40/30/30 theory. In case you are wondering what these numbers signify, they are indicative of the percentage of calorie intake, recommended by the Zone diet. Thus according to this diet plan, the calorie intake should be thus: 40% of calories should be from carbohydrates, 30% from protein, and 30% from fats. So when you have the recommended percentage of calorie intake mentioned in the Zone diet, you are considered to have had a Zone Favorable meal.

Zone diets are particularly relevant to those who are into a weight loss program. According to Sears, any one who has all his meals according to the criteria of Zone Favorable meals should have reduced insulin levels which would ultimately lead to weight loss since the body is unable to burn fat. While the Zone Diet has been challenged by many dieticians and experts, it is worthwhile to remember that any one would find keeping a strict Zone Diet difficult. Though many people have been able to achieve the correct calculation of calorie input in their daily meals, some have found the calculation too cumbersome. Some experts do not agree to this formula of 40% of calories from carbohydrates, 30% from protein, and 30% from fats to be of any great value.

The difficulty in calculating the right percentages could pose a big problem with many weight watchers. The other problem with Zone Diet could be as follows:

Zone Diet, even if taken in the correct percentages, which itself is an arduous task for many, takes a long time to work. This makes most weight watchers impatient.

The makers of Zone Diet have also introduced several diet supplements like bars and shakes which have clear calorie percentages marked. These Zone supplements are costlier than any other diet supplements available in the market. The cost factor is another deterrent to weight watchers who are reluctant to try the Zone products.

Despite the negativity which Zone Diet faces, it has proved to be extremely effective for many. Since embarking upon a diet plan for weight loss is always recommended to be preceded by a doctors’ advice, you also could seek a medical opinion whether the Zone Diet would be suitable for you. Since it has worked for so many people, there is no reason why it can not work for you.