O Microbioma Faminto

O Microbioma Faminto

Quer entender um pouco mais sobre como funciona o amido resistente, e o motivo de ele nos ser tão útil ? Veja esse vídeo bacaníssimo, legendado pelo Arthur Gumz do blog Paleo Odisséia.

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(Narrator) We know that many<br>plant foods benefit our health. Scientists now believe one reason for this lies<br>with the gut Microbiome the bacteria in your intestines. Your microbiome is nourished<br>by meals like this, rich in one type<br>of dietary fibre, called resistant starch. Resistant starch can’t be<br>digested by your body, but instead becomes food<br>for your gut bacteria. Most starch is easily digested. Starch is dissolved<br>in the small intestine and then absorbed by your body, providing you with<br>energy and nutrients. The remaining, non-digestible<br>portion is called Resistant starch. The Resistant starch continues<br>its journey through your gut and arrives at the<br>large Intestine. Here, we see that the Resistant<br>Starch has become exposed to the healthy bacteria<br>of the gut microbiome. This species of bacteria specialize in<br>breaking down resistant starch. This breakdown process<br>provides the bacteria with the fuel they<br>need to survive. As they use the<br>starch for energy, they release small<br>carbohydrate molecules. The neighbouring bacteria<br>feed on these carbohydrates. As the bacteria feed, they excrete even smaller<br>molecules as waste. One of the final waste<br>products is called butyrate, an energy source for your body. As the butyrate builds up, it is absorbed by the<br>large intestine. The presence of butyrate<br>encourages blood to flow into the vessels of the large<br>intestine, keeping the tissue healthy. If your diet includes<br>enough resistant starch, these cells will use butyrate<br>as their main source of energy. Here, we can see the<br>molecular surface of one of the intestinal cells. The surface is covered<br>in special proteins that actively pump butyrate<br>molecules into the cell. Once inside, they can be<br>harvested for energy. In addition butyrate<br>has other benefits. Intestinal cells are<br>sensitive to DNA damage, caused by environmental factors. This cell’s DNA<br>has been damaged, resulting in a mutation. More damage can accumulate<br>over time as the cell divides, which could lead to<br>colorectal cancer. But, a steady supply of butyrate allows the damage to be<br>more easily detected, and, the cell can activate a<br>suicide program in response. Because the damaged<br>cell destroys itself, it can’t progress<br>to form a cancer. A starved microbiome is unable<br>to protect you from cancer. By eating foods rich<br>in resistant starch, you can nourish your microbiome<br>and improve your health! [Music plays]