QUOTE from Dr Fung (emphasis mine):
“THE LAST PIECE OF THE PUZZLE
THERE ARE FIVE basic steps in weight loss:
Reduce your consumption of added sugars. Reduced your consumption of refined grains. Moderate your protein intake. Increase your consumption of natural fats. Increase your consumption of fiber and vinegar.
When it comes to the question of what to eat, you pretty much already knew the answer. Most diets very conspicuously resemble each other. There is far more agreement than discord. Eliminate sugars and refined grains. Eat more fiber. Eat vegetables. Eat organic. Eat more home-cooked meals. Avoid fast food. Eat whole unprocessed foods. Avoid artificial colors and flavors. Avoid processed or microwavable foods.” 
NOTE (my commentary):
There are five basic steps to Dr Fung’s process for weight loss.
To reduce them to an acronym: -SG(MP)+FFV:
Subtract from consumption of added sugars.
Subtract from consumption of refined grains.
Moderate your protein intake.
Add to your consumption of natural fats to provide caloric balance.
Add to your consumption of the two protective factors: fiber and vinegar.
In contrast to the Keto and Atkins diet, we moderate protein in order to decrease glucose in the body; glucose can be made from excess protein, and the purpose of the diet is to decrease the need for high levels of insulin, which can happen in the absence of glucose. Excess glucose in the blood directly causes insulin levels to rise. When glucose is low, the body turns to fat for fuel, beginning first in the liver and pancreas, and then in visceral fat. Fat consumed for fuel when there is a long term lack of glucose; the body preferentially burns any sugar present and then turns to fat for fuel. The absence of sugar and high insulin levels in the blood prevents any sugar being converted to fat by the action of insulin. Once all sugars are consumed and no more is added to the body, the body naturally remains in fat-burning mode.
It is the rapid decrease in visceral fat, it seems, that causes bariatric surgery to result in a rapid cure for type two diabetes in a very short time.
It is the rapid decrease in visceral fat, it seems, that causes bariatric surgery to result in a rapid cure for type two diabetes in a very short time. 
And it seems that what is happening in the pancreas is not that the cells that produce insulin are themselves exhausted or impaired, but that they are prevented from working properly because the pancreas is clogged with fat and unable to function. This fat is put there by excess insulin doing what insulin does – converting excess glucose in the blood into fat, packing the pancreas and liver with it. When sugar is gone, the ability to produce insulin is restored but excess insulin is not released because there is no call for it to process sugar in the body. 
… what is happening in the pancreas is not that the cells that produce insulin are themselves exhausted or impaired, but that they are prevented from working properly because the pancreas is clogged with fat and unable to function.
STRATEGY: This is the recipe. Switch this process on: -SG(MP)+FFV. Subtract sugar and grains, moderate protein, add healthy fat,fiber and vinegar.
What gets my attention?
Do I understand the need or problem?
Do I understand the potential solution?
Do I understand how to apply that strategy?
What questions do I have for the experts? What might be the answers?
Who needs to hear this?
What do I do next?
SOURCE – Footnotes:
 “The Obesity Code: Unlocking the Secrets of Weight Loss” by Dr. Jason Fung, Timothy Noakes, page 233.
Image: On-Off Switch.jpg From Wikimedia Commons
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Key: Fung-10-30.59 Last Revision: 02/02/2021