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Tag: Fasting

Fasting and health

Fasting and health

Fasting and its effect on brain activity To start, let us think of the last time you had a huge meal. How did you feel after it?. I am sure the feeling wasn’t one of complete mental wakefulness, and much less a sharpening of your senses.  This situations are usually followed by grogginess and lack of will to do any kind of activity. This is because once you are satiated your body turns its focus from all other activities, towards…

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Caloric restriction diets and the road to insulin resistance

Caloric restriction diets and the road to insulin resistance

How high insulin + Reduced calories = Slowing the metabolism Photo by Sam Xu on Unsplash Taking into account the 2 compartment model (remember the grocery shopping metaphor) to burn fat you would have to 1) deplete enough of the glycogen stores and 2) reduce the levels of insulin. When we start depleting our glycogen stores our body starts sending hunger signals. These hunger signals induce the desire to eat more (one of the reasons we feel hungry is that…

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Ketogenic misconceptions (I)

Ketogenic misconceptions (I)

Ketosis vs Ketoacidosis Understanding the risks Photo by Brooke Lark on Unsplash Many people have proposed that ketogenic diets are dangerous, and although we won’t enter in this argument, we would like to explain the difference between ketosis and ketoacidosis. To accomplish this goal we will start by explaining what each of this terms means and why they could have been linked to give rise to this misconception. Ketosis As we saw with the tactician metaphor, ketosis is the state…

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Getting fat? Here is a possible explanation

Getting fat? Here is a possible explanation

Insulin  The science of fat (I) You might be asking yourself ”What is insulin and why should we care about it?” Insulin is a hormone mainly known for its role in fat uptake. The levels of this hormone when we aren’t eating are low, and it is only when we eat something that the levels of this hormone increase. The increase in the levels of insulin isn’t the same for all kinds of food, this is due to the fact…

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What happens when you fast?

What happens when you fast?

In the last years fasting has been getting quite a bit of attention due to the many health benefits associated with it and  the fact that the number of proponents of this millenary practice are growing by the day only helps to heighten its popularity. In this article I would like to explain what happens in your body when you fast so that we can understand the rationale behind the benefits of this practice. What is fasting? So to start…

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Fasting misconceptions II

Fasting misconceptions II

II)Fasting makes you lose muscle Since this is one of the most frequent doubts about fasting , and I am sure you came here for this, lets start with the answer: Fasting doesn’t burn muscle Gluconeogenesis Why would we believe that fasting burns muscle? To explain why the spead of this notion we have to start by understanding a pivotal concept, which is “Gluconeogenesis“.  Gluconeogenesis is the process through which with the use of molecules such as fats or aminoacids…

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Fasting, the fat burning saga

Fasting, the fat burning saga

Part one: Ketosis As we have seen in previous articles, fasting long enough gives us the chance to switch from using glucose and glycogen as main source of energy to using fats as the main source of energy. But what does it really mean to burn fats? Fats What are they? To start we have to understand what fats are made of (this explanation will go a little bit into detail but bear with me for a little) . The…

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Fasting vs low-carb diets

Fasting vs low-carb diets

Understanding the difference Fasting can be understood as the voluntary stop of any kind of food consumption for a certain period of time. Low carb diets can be understood as the consumption mostly of foods that contain low percentage of carbohydrates and that present mostly fats and/or proteins. Both approaches have been getting attention in the last decades as ways of counteracting the growing obesity and diabetes problems. The reason for this being that both approaches reduce partially (in the…

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Fasting misconceptions I

Fasting misconceptions I

I)Fasting makes you feel sluggish One of the most common misconceptions we can find about fasting is that fasting makes you feel less energetic and active, and that as such it would be a bad idea if you want to do any kind of productive work. Let’s explain how your body actually works when you start fasting. To start we will address the assumption that fasting makes you feel groggy, this notion could come from the fact when you start…

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The calorie in calorie out fallacy (II)

The calorie in calorie out fallacy (II)

On the first article about this topic we saw how the traditional take into the calorie problem was wrong. Now let’s see why that is the case. Explaining the why behind the myth We already spoke about how the idea of calorie in calorie out is flawed, and now that we know that we will present you with another model that explains reality in a better way. Why calorie in calorie out doesn’t work The model is based on the…

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