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The Ghrelin Factor: The Science Behind Post-Diet Weight Rebound

diet hormones weight loss Jun 16, 2023
By Patrick Zitt, DC, MS, DNM




Have you ever gone on a restrictive diet and lost 10lbs, 20lbs, or even more?? Were you surprised at how quickly the weight came back on?

This is such a common scenario that there is a well-known term for the endless cycle of losing weight and gaining it back: yo-yo dieting.

In fact, one study of obese participants showed that approximately 30-35% of lost weight was regained within 1 year and 50% of participants regained all lost weight by 5 years (1).

You may assume post diet weight gain is solely due to a loss of will power. Or binging after you "fall off the wagon" is just the result of missing your favorite treats after a long restriction.

And while the psychology of dieting may play, there is actually a physiological reason that contributes to the return of lost pounds: Ghrelin.


What Is Ghrelin?

Ghrelin is a growth hormone. Hormones are the body’s messengers. They are chemicals that travel through the blood stream...

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Are Seed Oils Bad For You?

diet fat keto paleo whole 30 Apr 08, 2023
By Dr. Patrick Zitt, DC, DNM, MS



Seed oils are a huge source of controversy in the food and nutrition world. Cheap and easily accessible, they no doubt provide a means to more affordable food. There are a handful of studies that support mainstream claims that these oils are okay to include in a balanced diet. However, there are piles of evidence demonstrating the negative health effects of these oils, and that should give us all pause when making smart consumer choices. 


What are seed oils?

Seed oils (also referred to as vegetable oils or industrial oils) are unsaturated oils made from crops such as soybean, corn, sunflower seeds, safflower seeds, cottonseed, rapeseed/canola, grapeseed, and rice bran.

Unlike coconuts or olives, these crops do not easily give up their oils. After the seeds are gathered, they require extensive processing before the desired result is achieved:

  1. The seeds are first heated to extremely high temperatures, oxidizing* the oils...
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An Overview of Dietary Fats and Your Health

diet fat keto paleo whole 30 Mar 31, 2023
By Dr. Patrick Zitt, DC, DNM, MS



There is a lot of contradictory information when it comes to nutrition and the food group most subject to this kind of confusion is fats and oils!

We’re here to clear it up.


What are oils and fats?

Macronutrients -fats, proteins, carbohydrates- are the main building blocks to the foods we eat. All three are essential to good health and energy and are required in relatively large amounts. Each gram of a micronutrient contains a specific number of calories (energy):

  • Carbohydrates = 4 calories per gram
  • Protein = 4 calories per gram
  • Fat = 9 calories per gram

In some circles (we're looking at you, Keto), fats and oils are considered the holy grail of nutrition, encouraging up to 80% of daily calories from fat. Others preach that all fats and oils are health eroding, obesity inducing devils that should be limited as much as possible. The truth is a lot more nuanced than that!


The many benefits of dietary fat


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