Fit For Life Review - Does This Diet Plan Really Work? Are lack of evidence and conflicting science deal breakers?
This review is what happened after I obsessed for weeks over Fit for Life. We took the time to create a comprehensive review, focusing closely on the ingredients, side effects, customer-service quality and scientific studies. After that we reviewed at numerous user comments from all over the internet. Finally, we summarized all of the pertinent data to give you the facts.
What is Fit for Life?
The first thing you need to know is that Fit for Life is a diet program and best-selling book. The premise is that by eating more of the right kinds of food you can lose weight, change your life, and improve your figure without ever counting calories. It involves food combinations and timing meals to work with one’s natural body cycles. It also shares the menus, shopping lists, and exercise to follow for four weeks.
Fit for Life was written by Harvey and Marilyn Diamond. The book was originally published in 1985 and was followed by several companion books over the years. Although Mr. Diamond claimed to have a PhD, many academic and medical organizations have called his expertise into question. The school he received his degree from is not accredited. A revised edition was released in 2010, but read on…
Lack of Evidence– “The Authors Aren’t Nutritional Experts”
Our first concern is that the authors of the Fit for Life book have no background in nutrition. Further complicating the issue is that the education they do have has been called into question. According to our Research Editor, “For someone to claim expertise in a topic when they do not have the training, studies, or personal experience to back it up is dishonest.”
One unhappy customer said, “I read this book over 10 years ago when I was more impressionable and less knowledgeable about health, fitness, and nutrition. Boy was I hooked…but the couple that wrote this book are not doctors and the whole book is based on very questionable theories.”
Another explained, “People lose weight on this program because they eat massive amounts of water based food and limit the high calorie concentrated foods. However, their premises and reasoning behind the entire Fit for Life program is false.”
Others were more understanding. According to one successful dieter, “The Diamonds have a few good notions but they appear to be directed by luck not scientific judgement. I still lost weight but not because of sound scientific judgement.”
One happy consumer said, “I have now kept the weight off for twelve years and I attribute it to the fact that this book is about a lifestyle change and not just a diet.”
Conflicting Science– “It’s Outdated”
One of the more significant concerns with the Fit for Life diet is that respected medical organizations such as the American Academy of Family Physicians and the American Dietetic Association list this as nothing more than a fad.
One reviewer put it simply, “This is a strange diet with no science behind it.”
Another was less generous and said, “A pseudo-science to sell books that is not based in fact. The book is so inane that it’s hard to believe so many people are falling for it.”
Other dieters felt they gained valuable insight from the book. One explained, “It is a great overview on proper eating and how the digestive system works.”
Another claimed, “One of the suggestions I got out of this book was to eat my fruits first thing in the morning and to only have fruits until lunch. This alone has changed my life.”
According to our research, a lack of evidence when combined with conflicting information from reputable scientific sources is a serious red flag. If the Fit for Life diet plan is out of touch with current trends, that’s not a good thing.
The Science – “Lacking Scientific Support”
At DietSpotlight, it is very important to us that any dietary plan be based on reliable scientific evidence. A person’s health and well-being is directly linked to their choices and basing those on unverifiable data has the potential to be negative. Fit for Life may offer some solid advice, but nothing that the dieter can’t find on the internet for free and some has even been rendered inaccurate over time.
The Bottom Line – Does Fit for Life Work?
What’s the real deal with the Fit for Life diet? The program has numerous glowing reviews from people who have successfully lost weight using the book. However, the science indicates that these individuals lost weight due to calorie restrictions rather than through any valuable insights from the authors. According to authorities in the field of health and nutrition, this is little more than a fad which is why we have reservations about giving it our support.
If you are ready to lose weight we suggest sticking with a diet plan that was created with careful study and is strongly backed by the medical community. You may want to try a weight-loss supplement with ingredients that are backed by solid scientific testing and strong customer support.
Among the best supplements we’ve seen in 2016 is called Leptigen. The four key ingredients have been shown in documented clinical testing to help accelerate fat loss and enhance metabolism. During our research we didn’t find any negative online reviews. What we did find was glowing commentary from happy customers who successfully lost excess weight.
The manufacturers of Leptigen are so excited about their product that they are now offering a Special Trial Offer, which many dieters have begun taking advantage of.
Previous Fit For Life Review (Updated December 12, 2012):
What You Should KnowFit For Life is a book which takes a unique approach towards healthy eating written by Harvey and Marilyn Diamond and released in 1985. The premise of Fit For Life is that you can only lose weight and maintain a healthy body if you make long-term changes to your diet and that short-term dieting accomplishes nothing. Fit For Life became a best-seller and was followed up with Fit For Life II (1989), Fit For Life: A New Beginning (2001) and Living Without Pain: Fit For Life (2007). According to the Diamonds' website and all books in the series have sold over 12 million copies altogether. The recommendations in the book were unusual and although wildly popular on the talk show circuit were generally panned by professionals. But in the past twenty years many of Fit For Life's recommendations are being backed up by science and are in vogue.
Product FeaturesFit For Life contained some unusual dietary recommendations including eating nothing but fruit before noon and not combining proteins with complex carbohydrates. In fact, food combining was a large part of the Fit For Life mantra; it isn't always what we eat, it's how we eat it. Fit For Life was also an early proponent of the raw food diet, postulating that we gain more nutrients from food that has not been cooked or processed. Fit For Life was also very militant in its view that hydrogenated fat was unhealthy. This philosophy has since proven as the medical industry now recommends natural oils and fats over hydrogenated oils. Anyone thinking of following the Fit For Life dietary lifestyle should check with their doctor or nutritionist to ensure that there is nothing in it that has since been scientifically proven to be harmful.
- Promotes whole foods and healthy dietary lifestyle.
- Recommends exercise.
- Doesn't require purchase of expensive pre-packaged foods.
- Not developed by trained medical or dietary professionals.
- Some principles conflict with current belief about the causes of excess weight.
- Has the potential to lead readers to believe that any ailment can be cured with diet and this may prevent some from seeking medical treatment.