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



Eating too much saturated fat has been shown to raise levels of “bad” LDL cholesterol and increasing internal inflammation, and in turn, your risk for heart disease. Improving the fat quality of your diet by replacing saturated fat with unsaturated fat has been shown to reduce all of the above. New research shows that replacing just a few saturated fat foods in your diet can lead to dramatic improvements in cardiovascular health in a very short period of time.

Essential fat

A lot of people think fat is bad for you. But the truth is you can’t live without it. Fat is your body’s primary source of energy at rest. The fat in foods provides essential fatty acids the body can’t make on its own. These nutrients are critical for healthy cells, adequate absorption of fat-soluble vitamins (A,D,E,K), as well as insulation and protection for vital organs.

The key to enjoying these benefits is choosing the right quality of fat for your diet. Researchers from the University of Olso wanted to find out how total cholesterol, LDL cholesterol and inflammation are affected by replacing saturated fat with unsaturated fat for cooking and in foods such as bread spreads, cheese and cereals.

Replacing saturated fat

For their study, the researchers recruited 115 people with high cholesterol that weren’t being treated with statin drugs. Half were placed in a control group with no fat replacements. The others were placed in a test group with a diet that replaced saturated fat with polyunsaturated fat.

Among the findings, the test group reduced their total cholesterol an average of about by 9 percent and their LDL cholesterol by about 11 percent compared to the control group—after just eight weeks. This translated to a reduction in risk for cardiovascular disease by about 30 percent.

Reducing LDL

The researchers noted that there was no change in inflammation between the two groups. However The reduction in LDL cholesterol was significant because LDL is a major component of the plaque that clogs and hardens arteries at sites of inflammation within blood vessels of the heart and other parts of the body, in particular the legs.

Over time, these clogs can block the flow of blood to areas of the heart, resulting in a heart attack. Clogged arteries in the legs result in an extremely painful condition called intermittent claudication.

Improving fat quality

Limiting saturated fat intake to less than 10 percent of total daily calories can help you avoid these health problems. If your doctor says your LDL levels are too high, it’s recommended to reduce saturated fat intake to no more than 7 percent of total daily calories.

You can do this by targeting foods such as red meat, processed meat, commercial baked goods, butter, lard and bacon for replacement. Instead choose other sources of protein with foods such as poultry, fish, nuts, beans and rice. Cook with vegetable oils and enjoy foods such as olives and avocados.

The University of Olso study shows that by making just a few of these replacements is easy, manageable and leads to an improvement in cholesterol levels that will significantly reduce your future risk for cardiovascular disease.



Cleveland Clinic

American Heart Association


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