Categories Diet

17 Day Diet Review

The 17 Day Diet is comprised of four phases. Each phase adjusts the number of calories and carbohydrates the dieter intakes daily. Each phase lasts for seventeen days, the amount of time Dr. Moreno calculates that it takes the body to adjust to using stored energy – a key factor in weight loss. Rather than burn the current intake of calories and carbohydrates, which are lower than the body requires, reserves are called to action.


The 17-Day Diet cycles carbohydrate intake relative to which of four cycles the dieter is in. The diet includes a daily exercise plan that lasts for 17-Minutes and four specific 17-day meal plan cycles. It promises rapid weight loss results that are easily maintained with a healthy eating plan. It is very similar to both the Atkins and Weight Watchers Diets. However, the cycling of carb limits appeals to most dieters.  It eliminates long periods of time without favorite and staple carb sources, such as potatoes.

The Theory

When a dieter has a fluctuation of carb and calorie intake in his or her diet, this is called “carbohydrate cycling”. The body’s metabolism becomes confused, theoretically burning at a high-calorie rate even when the person is eating foods with a few calories. The time of “17-days” is believed to be the length of time it takes a body to adjust to a new eating plan.

Learn more about the 17-day diet at

Carbohydrate Cycling

When these 17-days are switched from low carb to high calorie, the body continues to burn calories according to the previous 17-day period. The result is weight loss because the body is always burning more carbs and calories than is being eaten. Some phases severely restrict carb intake while other phases will incorporate foods with higher carb counts. Dr. Moreno believes that this shifting of carb intake confuses the metabolism into using stored carbs to induce weight loss. If the weight loss reaches a plateau, the dieter simply goes back to the previous phase to start it again.

The Cycles

The plan works in four cycles, or phases, each lasting for 17-days. Here is a short description of each phase:

Phase I – “Accelerate” (days 1-17)

The acceleration comes in the form of rapid weight loss. Some people lost up to 12 pounds during this phase, because the meals are low in calories and carbohydrates. This phase is designed to enhance fat burning, digestive cleansing and weight loss by eating unlimited fish and chicken, avoiding starchy vegetables, sugary fruit and drinking 64-ounces of water per day. The caloric intake is limited to 1200 per day for women and 1500 for men.

“Activate” (days 18-34):

Phase II, the Activate phase, lasts from day eighteen through thirty-four. The meals for this phase include adding two servings of whole grains per day and three servings of lean red meat per week. The caloric intake is upped to 1500 calories for women and 1800 for men. Carbohydrate cycling begins during this phase.

The meals for this phase will incorporate the following foods and calories denied in Phase I:

  • Three servings of lean red meat per week – eaten only on the days that Phase II is used.
  • Drink one cup of green tea and 64—ounces of water EVERY day.

The daily caloric intake during Phase II is 1500 calories for women and 1800 calories for men, regardless of whether it is an Accelerate or Activate day.

There are also a few rules to be followed in Phase II:

  • No carbohydrates or fruit within eight hours of bedtime; limit is 1 cup per day
  • Use only fat-free yogurt
  • Exercise for 17-minutes every day; walking is exercise, too
  • Take a multi-vitamin every day
  • Do not drink green tea if you have iron problems


In Phase II, the fluctuation of carbs and calories begins – thus the term “Activate” applies. This phase resets the metabolism by using a strategy of increasing and decreasing calories to promote fat burning and the resist any weight loss plateaus that might normally occur. Meals will alternate between the ones in Accelerate and Activate phases – eat what you ate during Phase I along with foods allowed in Phase II. Natural starches and whole grains, along with an increase in lean red meats are also introduced in Phase II.

It is very simple to follow the “rule” for Phase II: On Day one – you eat only foods listed on the “allowed” food list. On day two, you eat only the foods from Phase I. So a typical schedule

It is very simple to follow the “rule” for Phase II: On Day one – you eat only foods listed on the “allowed” food list. On day two, you eat only the foods from Phase I. So a typical schedule would be: Phase II foods, Phase I foods, Phase II foods, Phase I foods – alternating between the two phases for the seventeen days of the cycle.

As with all diets or changes in your eating habits, seek the advice of a medical professional. Ensure that any particular plan is right for you.

“Achieve” (days 35-51):

The final two phases of the 17-Day Diet bring several foods back into your eating plan.

Phase III of the 17-Day Diet is called “Achieve” because you will achieve your goal weight during this cycle. Lean meats become unlimited in terms of quantity and all fruits are now allowed. You may even treat yourself to alcohol, in moderation, on a daily basis. The ideal description of Phase III is “the beginning of a low-fat, low calorie diet” that you will follow hereafter.

An optional serving of alcohol and a 100-calorie snack are also allowed on a daily basis. This is the beginning of a low-calorie diet without any processed food.

Phase IV – “Arrive” (days 52 – Onward)

Phase IV also brings you closer to a regular eating plan that maintains your optimal weight. That is why this cycle is called “Arrive.” You should plan to eat in this manner for a lifetime – no need for more yo-yo dieting or scrambling through diet plans to find one that is right for you. On weekends, you can eat up to three of your favorite meals without counting calories, carbs or anything else – but be sure to not overdo it and binge eat.

The plan is an ongoing cycling through the other phases above during the week – with splurging (eating what you want) on the weekends. It is important that close attention is paid to weight gain – more than five pounds means you return to Phase II and move forward again.

As with all diets, consult a medical professional before embarking on the 17-Day Diet. That way, you can ensure it will be safe and effective for you.

These two phases also bring you to the point of managing your weight gain or loss by fluctuating between all four of the phases of the 17-Day Diet. If you find yourself gaining weight in any amount, drop back one phase and eat those foods for one week or until you lose the weight you had gained. Feel free to drop back to Phase I foods if weight does not immediately lessen – you can be the best judge of how far back it requires you to go.

One of the best rules of thumbs is to eat plenty of vegetables, lean meats, and low-sugar fruits. Make sure your carbohydrate intake comes from healthy food, not overdoing the starches, such as pasta and bread. Be choosy, be careful and be wise about what you put on your plate.


These recipes are typically low in calories and carbohydrates while offering a reasonable quantity of fat and protein nutritional value. The recipes offer a great variety of dishes that will suit most tastes and budgets. Many are variable to substitutions to make them more personalized.

No matter whether you select a recipe for breakfast, lunch or dinner, you’ll find that the ingredients are very available in the grocery store and are often already on your pantry shelf. Get yourself set up on Phase I of this 17-Day Diet and prepare to see a new you begin to unfold in a matter of days.

About the author

Alexander Pommett is a dating and relationship expert who enjoys blogging. I’m the author, researcher, and publisher of this website. Coming in at over 100 posts, this is no longer the “little project” I had in mind when I first started.