Do the Keto

Is what we’re eating nowadays accelerating the aging of our bodies and minds? It appears the answer to this question could be yes, which is good news, because what we eat is something we can take control of. Even more intriguing is there’s growing scientific evidence that suggests the way the medical community has been advising us to eat needs to be turned upside-down.
Numerous research studies now show that high fat and low-carb (HFLC) diets can help people lose weight and may reverse chronic diseases, such as diabetes. In fact, a HFLC diet seems to be even more effective than the traditional recommendation of a high-carb, low-fat diet (HCLF), commonly advocated by advertisements, not to mention many doctors and dietitians as well. This may seem completely counterintuitive: Isn’t eating fat going to cause a person to gain fat?
How we got to this sugar addicted state
Let’s take a step back to understand how we ended up here in the first place.
In North America, the typical diet consists of moderate fats, high carbs, and moderate protein in an average ratio of about 30:60:10. This wasn’t always the case, however. The “Western diet” has changed significantly since the 1960s, when saturated fats began to be demonized as unhealthy, and the medical community began to support the consumption of carbohydrates (sugars). This was supported by the powerful sugar industry that created processed foods laden with sugar and trans fats. A 2017 report in the journal PLOS Biology exposed the impact of these powerful sugar lobbies on dietary recommendations (think burying data about sugar’s harmful effects and comparisons to tobacco industry tactics).
Unfortunately, this
means many of us are addicted to sugar. Research by Dr. Nicole Avena, a research neuroscientist at the New York Obesity Research Center at Columbia University, has shown that the brain treats sugar like it treats other addictive substances such as heroin, alcohol, and cocaine. Let that sink in: Sugar is like a drug and causes the same chemical reactions in the brain like other addictive drugs.

how food is affecting our aging signs
This sugar addiction is linked to the current obesity epidemic and chronic diseases like arthritis, diabetes, and Alzheimer’s. Basic science physiology helps to explain this: The body makes energy from food to sustain all of the cellular processes, including thinking, seeing, moving your arms and legs, and even digesting your food. That energy comes from the conversion of glucose into adenosine triphosphate (ATP). ATP is the energy source used to power our cells. When we eat carbohydrates, we break the carbohydrates down into glucose, which is then used by our body. The food is broken down into glucose in our bowels, but it then needs a critical agent in order to be used by the body. This is insulin. Insulin is essential for glucose to be absorbed into cells, and when you don’t need more glucose for energy needs, insulin will convert the glucose into glycogen, which gets stored in fat cells and muscles for later use.
The problem comes when we start eating too many carbohydrates (processed sugars, breads, rice, etc.). The body doesn’t know what to do with the excess energy and uses insulin to store it as fat. And to top it off, the type of fat that it gets stored as is “white fat” — this is the type that situates around your belly and organs. This is different from “brown fat,” which is used to keep your body warm.

In this scenario, you may lose weight by cutting down your calories to 1,200 daily, but this tactic sets you up for failure with rebound weight gain. This rebound weight gain happens because the body naturally responds to starvation by slowing the metabolism. So, one of the worst things you can do if you want to lose weight and keep it off is go on a high-carb, low-fat diet. You may lose weight for the first few months, but once you stop, the pile back on.
Breaking this vicious cycle with a ketogenic diet
Let’s get back to the evidence showing that HFLC diets work really well to lose weight, even better than traditional diets.
The key to understanding why HFLC works is the fact that your body can also use “fat for fuel.” These fats are called ketones, and when the body doesn’t have glucose available, it will begin to burn fat as energy. It does this by breaking fat down into ketones, which are then converted into ATP.
To burn fat for fuel, your body must have little or no insulin. Remember, insulin is secreted by your body when you eat carbs (sugars, breads, pasta, rice, fruits, etc.). This means you have to cut carbohydrates down to less than 50 grams per day to have the maximum amount of fat burning occur. When our bodies burn ketones for fuel, scientists describe this as being in “ketosis.” Contrary to what some people may say, it is considered generally safe and healthy to be in ketosis and to use fat as the primary fuel for our bodies.
eating vs aging
In fact, it seems our bodies were likely designed to function best when we alternate between using fat (ketones) and carbs (glucose) for fuel. Imagine your hunter-gatherer ancestors being able to catch a large animal for food and then being without food before the next big catch. Also, fruit and other carbs like root vegetables would only be available at certain times of the year.
This specific diet that uses fat for fuel is called a ketogenic diet. In a typical keto diet, roughly 70 to 80 percent of calories come from fat, 10 to 15 percent come from protein, and five to 10 percent come from carbohydrates. On a diet of 2,000 calories, approximately 50 grams of carbohydrates is considered the limit.
While, for many, it’ll definitely be a significant shift in how you eat, go ahead, take the plunge. Your body and your brain will thank you for it.


Cutting carbohydrates to under 50 grams per day for the ketogenic diet may not be easy, because many of us have become used to the high-carb way of eating. Start slow by following these four simple steps:

  • Reduce or remove any processed foods that have added table sugar, such as cookies and baked goods.
  • Reduce or remove breads and pastas.
  • Increase healthy fats, such as eggs, avocados, and coconuts.
  • Increase green vegetables, such as broccoli, kale, and spinach.
    If you end up having a chocolate chip cookie, a slice of bread, or a bowl of pasta, don’t beat yourself up. It takes time for your body to adjust to a new way of eating and to get better at using fat for fuel. Initially, you’ll likely feel tired and irritable and may have headaches. This will subside after a few days, and people generally describe a sense of the brain fog lifting and having more energy than ever before.

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