Welcome to The Medifast Plan, the independent source for Medifast diet info. Get the latest Medifast coupons and learn about the program with our in-depth coverage and resources.

While we feature the Medifast diet, we are also blog on the latest diet, nutrition, and health news. So, you can stay up to date on the latest nutritional science and learn healthy approaches to fighting obesity throughout the weight loss process.

Enter DietScienceNews.com

by TMP Editor on June 17, 2014

Greetings dear readers. In an effort to better reflect our overall mission and upcoming strategic transition, we will soon be switching the name of our website. We will no longer be themedifastplan.com and will move to the new URL of DietScienceNews.com. We are hoping to have this transition completed in the upcoming days.

What does this mean to you? Nothing much to start with. We still love Medifast and will continue to promote what we view to be the most effective commercial diet on the market. However, you have probably noticed that we cover a lot of general diet and nutrition news in our blog posts. We are going to continue in this direction and develop a more agnostic approach to our views of the dieting industry.

We look forward to continuing this journey with you as we refine our quest for real, science based diet and nutrition news.


Americans are exercising more, but they aren’t getting much slimmer. Exercise is an essential part of a weight loss strategy, but portion control could be more important. The challenge is to maintain a balanced diet that provides the nutrition necessary to remain healthy while eating less.

Medifast Twice as Effective

When it comes to portion control, a recent trial found that the prepackaged food regimen featured with Medifast helped people lose twice as much weight compared with dieters who tried to match the same nutrition and calorie count on their own.

Exercise can’t overcome poor diet

A new study from the University of Washington’s Institute for Health Metrics found that in the last decade, the percentage of Americans who got sufficient weekly exercise increased from 46.7 to 51.3. In a report on the study published in the journal Population Health Metrics, the researchers concluded that this increased physical activity has done little to reduce the U.S. obesity rate.

According to the Centers for Disease Control and Prevention, more than a third of Americans are obese. A separate report by the institute published in the Journal of the American Medical Association identified poor diet as the primary reason why Americans are so unhealthy compared to other developed countries.

The portion control solution

Another study, published in the April 2013 issue of the International Journal of Obesity shows that a prepackaged portion control diet plan can be a viable solution to this intractable problem.

Researches at Tufts Medical Center in Boston conducted a rigorously controlled year-long study comparing the results of dieters on the Medifast 5 & 1 Plan with dieters given advice on how to achieve the same nutrition and calorie intake independently.

A total of 120 men and women from 19-65 years old with body mass indexes ranging from 35 to 50 were randomly assigned to two equally sized groups. The study included a 6-month weight loss phase and a 6-month weight maintenance phase.

Medifast results

At the end of the weight loss phase, people in the Medifast group lost an average of 16.5 pounds (6.7 percent of their starting weight). Those buying and preparing their own diets lost an average of 8.4 pounds (3.4 percent of their starting weight. The Medifast dieters shrank their waists an average of 2.24 inches compared to 1.46 inches for independent dieters. Total cholesterol dropped an average of 8.4 mg for the Medifast group compared to 1.1 mg for the independent group.

Often after a significant caloric restriction a few pounds return as the body seeks equilibrium and the Medifast plan was no exception. However, overall weight loss for the Medifast dieters was an average of 10 pounds, more than twice that of the independent group at 4.4 pounds.

The Medifast 5 & 1 Plan

The Medifast 5 & 1 Plan consists of five pre-packaged meals each day designed to supplement one meal of vegetables and protein prepared at home. The portion control program offers 70 prepackaged foods arranged in multiple combinations totaling 1,000 calories a day. Medifast dieters also receive access to dieticians and recipes for the home-cooked aspect of the plan, which costs about $300 a month.

Source: International Journal of Obesity, HealthWatch MD, Los Angeles Times



To minimize your risk for heart disease, dietary guidelines recommend limiting consumption of foods that contain saturated fat. New research suggests that eating too much saturated fat could also accelerate the progression of osteoarthritis, a degenerative joint disease associated with growing old.

A consequence of aging?

However, a growing body of evidence suggests that osteoarthritis is not necessarily an inevitable consequence of aging. Inflammation may play a larger role, and not only does saturated fat trigger inflammation that increases the risk for heart disease, it is known to worsen arthritis inflammation.

The good news is that other types of fat—monounsaturated and polyunsaturated—have been linked to slower osteoarthritis progression. Plant based fats and oils as part of a healthy diet, combined with exercise and a healthy weight, are the best prescription for healthy joints.

Joint space

The new study was conducted by researchers at Brigham and Women’s Hospital in Boston as part of the Osteoarthritis Initiative, an international project funded by the National Institutes of Health. It’s the first research to produce direct evidence linking saturated fat and osteoarthritis progression using a large representative sample of the U.S. population.

The researchers selected more than 2,000 people diagnosed with knee osteoarthritis. The participants reported their dietary intake and had their knees x-rayed once a year during the 48-month study period. The degree of osteoarthritis progression was determined by the amount of joint space measured between where the femur and tibia intersect at the knee.

Unsaturated fat protective

Among the participants, as saturated fat consumption increased, joint space decreased. In contrast, those who had more unsaturated fat consumption relative to saturated fat consumption showed less narrowing of joint space in their knees. Polyunsaturated fat (plant based oils, fatty fish) appeared to make the biggest difference in slowing osteoarthritis progression.

Diet and exercise prescription

Unsaturated fats are part of a healthy diet that can help you maintain a healthy weight—one of the best prescriptions for keeping osteoarthritis from becoming a threat to future mobility. A 2015 study published in the journal Arthritis found that people with osteoarthritis who ate a plant-based diet of fruits and vegetables, legumes and whole grains significantly reduced their pain and increased their mobility. Other foods associated with slower progression of osteoarthritis include broccoli, Brussels sprouts, cabbage, garlic, onions, olive oil and walnuts.

In addition to controlling weight, exercise can help strengthen the muscles that support joints, reducing instability that contributes to the mechanical wear and tear that combines with inflation to worsen osteoarthritis. The bottom line: minimizing the effect of osteoarthritis on the quality of your life is one more good reason to make healthy lifestyle changes.


MedPage Today

Practical Pain Management

Arthritis Foundation


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