Do you know what tannin is in coffee? on the effect of coffee tannin on people

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Friends who often drink coffee all know that coffee contains sugar and fruit acid, so this is why coffee tastes sweet and sour and people can't put it down. I also know that drinking black coffee often has many benefits, but did you know that coffee contains a substance called tannin? In fact, tannin is one of the main substances for coffee to lose weight, if you don't know what tannin is, move on!

Coffee can improve insulin sensitivity

The chemical composition of coffee is very complex, and different origin, baking process, grinding and brewing methods, so that the final components will not be completely consistent.

The benefits of glucose and lipid metabolism may be related to bioactive substances in coffee, including antioxidants and repair enzymes (such as vitamin E, glutathione). Caffeine, phenols (such as tannic acid), lignans, trigonelline, N-methylpyridine, vitamins (such as magnesium, potassium, nicotinic acid), they all play a certain role in improving insulin sensitivity.

At present, caffeine and tannic acid are clearly studied. Caffeine and tannic acid can inhibit intestinal glucose absorption by increasing gastrointestinal GLP-1 level and inhibiting glucose-6 translocase activity, and reduce liver glucose output by inhibiting glucose-6 phosphatase. By stimulating glucose transporter 4 and intracellular glucose metabolism-related signaling pathways (such as activating Akt,/AMPK/MAPK, etc.) to promote insulin secretion by islet β cells, enhance the sensitivity of peripheral tissues (such as liver, muscle, adipose tissue) to insulin action, and accelerate glucose uptake and utilization [3].

The effect of tannic acid on human body

Caffeine and tannic acid components can accelerate the production capacity of brown adipose tissue and promote lipid oxidation [4].

The study found that eating 6 cups of coffee a day can consume about 100 kcal, while eating coffee rich in tannins for 3 months can reduce weight by an average of 5.4 kg and reduce body fat content, so there are certain benefits for overweight people [5].

Patients with type 2 diabetes, especially those with obesity, have increased levels of oxidative stress and chronic low-grade inflammation, which is closely related to insulin resistance, abnormal lipid metabolism and damage of islet β-cell function. There are a variety of antioxidant and anti-inflammatory ingredients in coffee, such as caffeine, tannic acid, caffeine, trigonelline, ferulic acid, lignans, flavonoids and so on. Eating eight cups of coffee a day for four weeks can reduce insulin resistance, significantly increase adiponectin (an insulin sensitizing hormone secreted by adipose tissue) and reduce oxidation and inflammatory factors, according to a clinical study.

Coffee helps to improve the diversity of intestinal flora.

At present, the research on intestinal flora is in full swing. Before, our understanding of intestinal flora was limited to simple symbiotic relationship, which obviously seriously underestimated their value and significance in all aspects of human regulation.

Studies have found that intestinal flora is closely related to emotional state, type 2 diabetes, obesity, high blood pressure, autoimmune diseases, cancer and so on. Compared with the normal population the type number and proportion of intestinal flora in patients with type 2 diabetes and obesity have significant changes. A clinical study published in the journal Science (IF:37.205) [7] found that daily coffee intake helps to improve the diversity of intestinal flora and maintain normal intestinal flora composition.

Tannin used to be a weight loss factor in coffee. No wonder drinking black coffee can lose weight. Now you know! Tannin sounds like a bad substance. Now I know that tannin has a lot of benefits, and I like black coffee even more in the future.

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