What is ketosis?

One of the ways Medifast helps people magically lose weight is by putting the body in a mild state of ketosis. While ketosis may sound like a dread disease, it is actually a pretty cool thing.

In a nutshell, here's how ketosis works: when you switch to a high protein, low carb diet, the liver runs out of glycogen stores and starts using fat -- instead of carbohydrates -- as fuel.

Fuel burns, right? So what happens is that your fat starts melting off your tummy, hips and other areas of your body and is disposed as a waste product.

Ketosis helps fat melt off your body

B'bye, fat. Don't let the door hit you on your way out!

Seriously, ketosis is the magic behind Medifast and other high protein / low carb diets like Atkins and South Beach. It takes about three days for your body to achieve this state once you change your eating habits, so every time you cheat you risk getting out of ketosis and having to start all over again.

The way I look at it, carbs for Medifast dieters is like antibuse for alcoholics. While the calories from a hunk of bread or chocolate chip cookie may not kill me, the extra carbs may cause my body to get out of ketosis and force me to start the process all over again.

The first few days of getting into ketosis are the hardest part since you can experience undesirable symptoms like headaches and sluggishness. After that, however, the ketones suppress hunger and the headaches go away as your metabolism adapts to burning fat vs. sugar.

On the rare occasions I've cheated on Medifast, I did it in waves, giving myself a few days to indulge in some forbidden foods/drinks before going strictly back OP and returning to my fat melting state.


You can purchase Medifast replacement meals directly from Medifast Centers, the Medifast website or -- for no extra cost -- through the co-branded website of a Medifast TSFL health coach. Medifast does not recommend purchasing its products from third party vendors, but if you choose to do so, you can find them on both Amazon and eBay.

Medifast replacement meals on Amazon

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How Medifast Helped Me Develop Better Habits

Medifast Centers Vs. DIY Medifast

Irrational Numbers: Doing the Math on Medifast Popcorn

Medifast Vs. Lean Cuisine Diet

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