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Category: Nutrition

Gluconeogenesi

Gluconeogenesi

A brief introduction. Gluconeogenesis Whenever the body sees that the glycemic index is lower than it should, meaning that the levels of glucose in blood are lower than they should it starts trying to obtain more glucose to make up for it. Among the different methods it could use we can find those based on external sources and those based on interanl. The first one we could think of is basically eating food with carbohydrates to make up for it…

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Fiber the forgotten ally

Fiber the forgotten ally

Fiber is defined as the portion of plant-based foods that cannot be completely broken down by digestive enzymes. As its definition implies, fiber is not directly absorbed by your body, and we can’t directly use it as a source of energy. But that doesn’t mean that it is useless since fiber is actually used by our gut bacteria. To understand how our microbiome(the bacteria in our body) deals with fiber we have to understand the different types of fiber. Types…

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Coffee and health (I)

Coffee and health (I)

Photo by Nathan Dumlao on Unsplash We all know about coffee, whether we like it or hate this beverage has been with most of us since our birth, be it  directly due to its consumption in our households or due to media coverage. Coffee nowadays The consumption of coffee originated in northeast Africa and from there it has extended all over the world, and now there is no movie or series in which the none of the characters consume it….

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Hunger

Hunger

Photo by Tristan Colangelo on Unsplash What is hunger Hunger is, different from what many of us could imagine, partly a learned phenomena. Think for example of how many of us don’t feel hungry the moment we wake up, and how this changes once we start seeing cues that remind us of breakfast. Or how even though  not much time has passed since our last meal, we start feeling ”hungry” as lunchtime  and dinnertime arrive. It isn’t only because too…

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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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