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Intermittent fasting and keto diet: Can you do both at the same time?
Hint: Both lead to the same metabolic state.
- The keto diet and intermittent fasting are two weight-loss methods that have gained popularity in recent years.
- Both can put the body in a state of ketosis, which leads to many of the same benefits.
- However, scientists are still researching both intermittent fasting and the keto diet, and it's best to consult a doctor before making any drastic changes to your dietary habits – especially two changes at same time.
The keto diet and intermittent fasting are two popular, effective ways to lose weight quickly. Both methods bring upon similar changes in the body: more ketones, lower blood sugar and, at least anecdotally, improved mood and mental clarity. Both also call for less snacks, though the keto diet restricts which snacks you eat while intermittent fasting restricts when you snack.
It's generally safe to experiment with either the keto diet or intermittent fasting (though it's always better to consult a doctor first). But how safe is it to combine the two? First, let's take a look at what both of these weight-loss approaches do to the body, and how those processes might interact.
The keto diet
In simple terms, ketosis is a metabolic process in which the body starts burning fat for fuel instead of sugar (glucose). Ketosis occurs naturally when the body doesn't have enough glucose to use as energy, so it instead turns to stored fats, which it converts into ketones that are distributed through blood to muscles and other tissue. The keto diet triggers this process by calling for a diet high in fat and low in carbohydrates, which results in lower levels of blood sugar and insulin.
Although scientists are still researching exactly how ketosis affects the body, some studies suggest keto diets can:
- Improve mood and mental clarity
- Improve heart health
- Decrease seizures among epilepsy patients
- Help in cancer treatments (potentially)
- Decrease acne
Cutting carbs is a sure way to put your body in a state of ketosis. Another way? Fasting.
Three square meals a day is the norm in the developed world, but in terms of human evolution it's a relatively new idea. The breakfast-lunch-dinner routine was likely established by Europeans, some of whom scoffed at the "uncivilized" Native Americans who didn't have rigid eating times and changed dietary habits with the seasons. But, as Yale University professor and author of Food: The History of Taste Paul Freedman argues, there's no biological reason for eating three meals a day at specific times.
Research shows that replacing rote eating habits with controlled fasting can be beneficial for your health, particularly through intermittent fasting, which can include fasting for several days at a time, fasting for 18 hours a day and eating only during the remaining six, and similar approaches.
Studies suggest intermittent fasting can:
- Increase longevity in animals and humans
- Increase levels of human growth hormone, promoting healthy muscle growth and fat loss
- Improve protection against cardiovascular diseases
- Gently stress your cells and neurons, strengthening them
- Promote autophagy — a natural process in which cells shed damaged cells, toxins
One particularly interesting benefit of intermittent fasting is that it seems to be effective at increasing insulin sensitivity, which refers to how cells respond to insulin – the hormone that tells cells to allow sugar to enter so it can be used as fuel.
"The food we eat is broken down by enzymes in our gut and eventually ends up as molecules in our bloodstream," Monique Tello, MD, MPH, wrote for Harvard Health Blog. "Carbohydrates, particularly sugars and refined grains (think white flours and rice), are quickly broken down into sugar, which our cells use for energy. If our cells don't use it all, we store it in our fat cells as, well, fat. But sugar can only enter our cells with insulin, a hormone made in the pancreas. Insulin brings sugar into the fat cells and keeps it there."
But for reasons scientists don't completely understand, our cells can become resistant to insulin, which can cause your pancreas to produce too much of the hormone and then, after it becomes fatigued, not enough. Intermittent fasting might break that cycle by putting your body in a fasting state in which it doesn't overproduce insulin, as Dr. Jason Fung told the Bulletproof Radio podcast:
"If you become very insulin resistant, then your insulin levels are up all the time, your body is always trying to shove the energy into the fat cells, and then you feel cold and tired and lousy. That's the real problem. Resistance really depends on two things. It's not simply the high levels, but it's the persistence of those levels. What people have realized is that the insulin resistance, because it depends on those two things, a period of time where you can get your insulin levels very low is going to break that resistance because it breaks that persistence. Not simply the levels, but the persistence of those levels."
Combining the keto diet with intermittent fasting
The major link between the keto diet and intermittent fasting is that they both can put the body into ketosis, generally resulting in lower levels of blood sugar and insulin, and therefore weight loss. But are they safe to do together?
Intermittent fasting will almost surely help you reach ketosis faster than a keto diet will alone, typically within 24 hours to three days. It's safe to say that, in terms of weight loss, combining these two approaches is likely to enhance the other's efficacy. But that's not to say everyone should do it.
Intermittent fasting and keto diets have been linked to mood problems in the weeks after beginning one or the other – irritability, anxiety, depressive symptoms. (For keto diets, this is often called the "keto flu.") It might be unsurprising that a drastic change in dietary habits would result in mood swings, and, to be sure, anecdotal reports suggest these symptoms tend to clear up eventually if people stick to their new routines. Still, it's best to consult your doctor before making such a drastic change – especially if you already suffer from a psychiatric condition, or a condition significantly affected by levels of blood sugar and insulin, like diabetes.
If you're going to move forward with combining intermittent fasting with the keto diet, consider these bits of advice from Perfect Keto:
"Make sure you still eat enough. Intermittent fasting does help you naturally eat less during the day, but be sure you're still eating nutritious ketogenic foods to avoid any deficiencies or metabolic issues. Use a website or app to calculate ideal caloric intake and your ketogenic macros for each day, then track them to make sure you're getting sufficient nutrition.
Measure your ketone levels. Even though fasting can really help you stay in ketosis, it's still important to make sure you aren't eating too many carbs or doing anything else to kick you out of ketosis. Track your ketones often to make sure you're actually in ketosis!"
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Educators and administrators must build new supports for faculty and student success in a world where the classroom might become virtual in the blink of an eye.
- If you or someone you know is attending school remotely, you are more than likely learning through emergency remote instruction, which is not the same as online learning, write Rich DeMillo and Steve Harmon.
- Education institutions must properly define and understand the difference between a course that is designed from inception to be taught in an online format and a course that has been rapidly converted to be offered to remote students.
- In a future involving more online instruction than any of us ever imagined, it will be crucial to meticulously design factors like learner navigation, interactive recordings, feedback loops, exams and office hours in order to maximize learning potential within the virtual environment.
A leading British space scientist thinks there is life under the ice sheets of Europa.
- A British scientist named Professor Monica Grady recently came out in support of extraterrestrial life on Europa.
- Europa, the sixth largest moon in the solar system, may have favorable conditions for life under its miles of ice.
- The moon is one of Jupiter's 79.
Neil deGrasse Tyson wants to go ice fishing on Europa<div class="rm-shortcode" data-media_id="GLGsRX7e" data-player_id="FvQKszTI" data-rm-shortcode-id="f4790eb8f0515e036b24c4195299df28"> <div id="botr_GLGsRX7e_FvQKszTI_div" class="jwplayer-media" data-jwplayer-video-src="https://content.jwplatform.com/players/GLGsRX7e-FvQKszTI.js"> <img src="https://cdn.jwplayer.com/thumbs/GLGsRX7e-1920.jpg" class="jwplayer-media-preview" /> </div> <script src="https://content.jwplatform.com/players/GLGsRX7e-FvQKszTI.js"></script> </div>
Water Vapor Above Europa’s Surface Deteced for First Time<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="9c4abc8473e1b89170cc8941beeb1f2d"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/WQ-E1lnSOzc?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span>
A study finds people are more influenced by what the other party says than their own. What gives?
- A new study has found evidence suggesting that conservative climate skepticism is driven by reactions to liberal support for science.
- This was determined both by comparing polling data to records of cues given by leaders, and through a survey.
- The findings could lead to new methods of influencing public opinion.
Mind the cues<div class="rm-shortcode" data-media_id="CabkeAzx" data-player_id="FvQKszTI" data-rm-shortcode-id="169377c88f392a86f6c42180b74820a5"> <div id="botr_CabkeAzx_FvQKszTI_div" class="jwplayer-media" data-jwplayer-video-src="https://content.jwplatform.com/players/CabkeAzx-FvQKszTI.js"> <img src="https://cdn.jwplayer.com/thumbs/CabkeAzx-1920.jpg" class="jwplayer-media-preview" /> </div> <script src="https://content.jwplatform.com/players/CabkeAzx-FvQKszTI.js"></script> </div> <p>The gulf in accepting the science behind climate change also exists among party elites. It is well known to any American who is attentive to the news, as party leaders are often more than willing to discuss their take to journalists.</p><p>Using polling data going back to the 1980s, the researchers were able to create a chart showing the aggregate amount of climate skepticism among the general population. A similar diagram showing the Republicans' skepticism dating back to 2001 was sourced from a previous, similar study. It was shown to be highly correlated with the one produced for this study.</p><p>These charts were compared with media content from prominent newspapers that included implicit or explicit stances on climate change by significant political figures. These thousands of articles were classified by using key terms and which major political figures were quoted or referenced. The researchers compared the number of cues over time to measured skepticism and looked for "<a href="https://en.wikipedia.org/wiki/Granger_causality" target="_blank">Granger causality</a>," the tendency for one variable to predict the future value of another variable.</p><p>The model shows evidence of both in and out-group cue effects, though the repulsion to out-group cues was much more evident. A significant increase in Democratic cues in favor of climate science was followed by a rise in skepticism among Republican voters. Importantly, the cues lead, rather than follow opinion, and do so with consistency. Changes in view did not predict changes in the number or direction of cues. </p><p>The researchers also surveyed nearly 3000 adults to demonstrate the concept. This involved showing them a statement on the scientific consensus around climate change and a cue from either a Republican or a Democrat. This test confirmed the previous observation and provided further support for the notion that signals from leaders cause an increase in skepticism among some respondents.</p><p>Before my left-leaning and Democratic readers get too smug, this research references previous studies demonstrating a similar effect in the lead up to the Iraq War. However, in that case, the Democratic Party elites' mixed messages were countered by a Republican Party united behind the idea of invasion. The effect on the Democratic party rank and file was similar to that observed in this case. </p><p>Several other studies have examined effects similar to this for other issues. This study's importance is its focus on out-group cues and the effort placed into demonstrating a causal relationship between the statements of certain party elites and public opinion. Most previous studies focused purely on in-group cues or failed to differentiate between the two. </p>
Can thinking about the past really help us create a better present and future?
- There are two types of counterfactual thinking: upward and downward.
- Both upward and downward counterfactual thinking can be positive impacts on your current outlook - however, upward counterfactual thinking has been linked with depression.
- While counterfactual thinking is a very normal and natural process, experts suggest the best course is to focus on the present and future and allow counterfactual thinking to act as a motivator when possible.
“Upward” versus “downward” counterfactual thinking<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzQ1NDYxOS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY0NDM2MDY2OX0.njWs1qrV1vDBxU1V75tUduUW4TjJvEHglDWsK8ZF2l4/img.jpg?width=1245&coordinates=0%2C556%2C0%2C209&height=700" id="a15fa" class="rm-shortcode" data-rm-shortcode-id="98314d4d2b256ed08f42d369fe4ae080" data-rm-shortcode-name="rebelmouse-image" alt="concept of man thinking about the past one line drawing counterfactual thinking" />
What are upward and downward counterfactual thinking?
Image by one line man on Shutterstock<p><strong>What is upward counterfactual thinking?</strong></p><p>Upward counterfactual thinking happens when we look at a scenario and ask ourselves "what if" in terms of how our life could have turned out better. </p><p>Examples of upward counterfactual thinking are: </p><ul><li><em>"I wish I had taken that other job instead of this one 10 years ago - my life would be so much better if I had." </em></li><li><em>"I wish I would have gotten the part in that high school play, maybe I could have gotten into a theatre school and became an actor…"</em> </li></ul><p>Both of these examples have the ideology that if you had made different choices, your life right now would be improved. </p><p><strong>What is downward counterfactual thinking?</strong></p><p>Downward counterfactual thinking is, naturally, the opposite of upward counterfactual thinking in that we think about how things could have been worse if other decisions had been made. </p><p>Examples of downward counterfactual thinking are: </p><ul><li><em>"I'm so thankful I studied secondary education in university instead of psychology like I had originally planned - I love teaching high school kids and I never would have gotten to do that…" </em></li><li><em>"I'm so happy I left David when I got the chance, I can't imagine still being in an unhappy marriage with someone who doesn't support me…"</em> </li></ul><p>In these examples, we see the idea that if you had made different choices your life would not be as good as it is right now. </p>
How counterfactual thinking can impact your life<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzQ1NDYxNy9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYyNjI2MDQxOX0.DIVQ-Yk0d6yE3tc743MH1Fz2pOg1TGHLmhp8dPp9UdY/img.jpg?width=1245&coordinates=0%2C0%2C0%2C0&height=700" id="522d7" class="rm-shortcode" data-rm-shortcode-id="da7df6ad916b043e3610223900d0f8df" data-rm-shortcode-name="rebelmouse-image" alt="man thinking what if written on chalkboard" />
How do upward and downward counterfactual thinking impact your life?
Photo by Brasil Creativo on Shutterstock<p>While many people don't see the point in "what if" scenarios, various studies have found that downward counterfactual thinking can be more associated with psychological health compared with upward counterfactual thinking. Not only that, but research has also shown upward counterfactual thinking can be linked with current and future depression.</p> <p><strong>Downward counterfactual thinking tends to be more associated with psychological health </strong></p><p>According to a <a href="http://journal.sjdm.org/jdm06136.pdf" target="_blank">2000 study</a>, downward counterfactual thinking can be linked with better psychological health compared to upward counterfactual thinking. More importantly, in cases where downward counterfactual thinking did lead to negative feelings, those feelings acted as something of a motivator for people to take productive actions to better their current situation. </p> <p><strong>Upward counterfactual thinking tends to be more associated with depression </strong></p><p><a href="https://www.sciencedirect.com/science/article/abs/pii/S0272735816301714#:~:text=An%20upward%20counterfactual%20(as%20opposed,Markman%20and%20McMullen%2C%202003)." target="_blank">According to a 2017 study</a> that pooled a sample of over 13,000 respondents, thoughts about "better outcomes" and regret (upward counterfactual thinking) were associated with current and future depression. </p> <p><strong>Downward counterfactual thinking can actually improve your relationships and is more often engaged in by women than men.</strong></p><p>In a <a href="https://dspace.sunyconnect.suny.edu/bitstream/handle/1951/67589/Studer_Thesis.pdf?sequence=1&isAllowed=y" target="_blank">2016 research paper submitted</a> to the Department of Psychology at the State University of New York at New Paltz, downward counterfactual thinking in regards to romantic relationships was associated with relatively positive relationship outcomes. Interestingly, women were more likely than men to engage in downward counterfactual thinking about their romantic life. </p> <p><strong>Upward counterfactual thinking can have some benefits in certain scenarios. </strong></p><p>When we look back after a failed test and think "I wish I would have studied more" - this motivates us to study harder the next time a test comes up. In this way, upward counterfactual thinking (or the negative version of "what if") can actually benefit us. </p> <p><strong>This can be difficult, though, because much of the time upward counterfactual thinking is more associated with a pessimistic outlook that can be unmotivating. </strong></p> <p>Thinking in the past tense can be motivational (and even healthy) at times, but the best thing to do is look forward. </p><p>While counterfactual thinking as a whole can be used to motivate us to make better choices or appreciate where we are in life, <a href="https://www.psychologytoday.com/us/blog/darwins-subterranean-world/201809/the-psychology-what-if" target="_blank">this Psychology Today</a> article suggests that we should come up with ways to move on and focus on the present and the future instead of the past. Using counterfactual thinking as a motivational tool can be very helpful if we don't get stuck in the "what if" mindset that tends to pull us out of the present and back into the past, where things will always remain the same. </p>