Weight Loss Tip: Let Meals Cool Before Eating to Effortlessly Reduce Calorie Absorption

You can let your food sit for a while before eating it.

When we feel very hungry, our blood sugar drops, and the body releases ghrelin, a hormone that stimulates our appetite and makes us want to eat. The release of ghrelin also promotes the release of glucagon. Within 30 minutes of blood sugar dropping, the pancreas automatically releases glucagon, causing blood sugar to rise again and return to a stable level. At this point, you won't feel hungry as easily.

I believe everyone has experienced this: being very hungry but not having eaten, and then not feeling hungry again after an hour. This is due to the same principle. Additionally, when glucagon is released, the body shifts some of its energy supply from carbohydrates to fat, making fat easier to break down. Therefore, the next time you feel hungry, you can wait about ten minutes before eating. This allows you to confidently tell yourself that you are already burning fat.

Letting your food sit for a while before eating not only reduces hunger, reduces food intake, and increases fat burning, but it can also reduce the energy absorbed by the body from the food itself. This is mainly because the structure of starchy foods changes when they are cooled.

Studies have shown that when cooked rice and steamed buns are stored at 2℃~4℃ for a period of time, such as in the refrigerator, some of the starch transforms into resistant starch, which is not absorbed by the body. This creates a feeling of fullness without absorbing excessive calories, while the protein and B vitamins in the rice can still be utilized by the body without any problems.

Starchy foods, such as rice, undergo gelatinization during heating. The starch granules absorb water and swell, increasing in volume and resulting in a soft, sweet texture. During this process, the proportion of resistant starch decreases. However, when the rice cools down again, some of the gelatinized starch reverts to non-absorbable resistant starch, resulting in a dry and hard texture. This type of starch is digested slowly, absorbed more slowly, and enters the bloodstream more slowly, lowering the glycemic index (GI).

So what exactly is resistant starch? Starch structure is mainly divided into two types: amylopectin and amylose. Cooked and cooled starch transforms into amylose, which is the structure of resistant starch. Compared to amylopectin, amylose has a significantly smaller digestible surface area, slowing down its digestion and potentially aiding in weight loss.

Resistant starch is also very common in daily life and can generally be divided into several categories:

First category: Found in grains and legumes. In these foods, some starch is encased in cell walls, preventing access by amylase and thus hindering digestion. However, after processing and chewing, it often becomes digestible.

Second category: Found in raw carbohydrate foods, such as raw potatoes, raw bananas, and corn. Resistant starch disappears as gelatinization completes, and bananas, as they ripen, transform into starch that is easily absorbed by the body.

Third category: As mentioned above, cooked and cooled food contains an increased proportion of resistant starch, making it more difficult to digest. However, for optimal results, the temperature needs to drop below 5°C, which is often unattainable at room temperature. It may be necessary to refrigerate the food before consumption, which is not recommended for those with sensitive digestive systems.

Another reason to let food sit for a while before eating is that consistently consuming extremely hot food is harmful. Normally, the temperature of the human mouth and esophagus is between 36.5℃ and 37.2℃. When exposed to food at around 75℃, the mucous membranes covering these surfaces suffer minor burns.

While injured tissue will slough off, regenerate, and repair itself quickly, occasional minor injuries can heal rapidly.

However, if you frequently eat excessively hot food, the mucous membranes are constantly forced to repeat this repair process. The thickened mucous membranes gradually become less responsive to heat stimulation, creating a vicious cycle where those who love hot food become increasingly tolerant of heat and consume increasingly hotter foods. This leads to increasingly severe burns to the mucous membranes, potentially causing oral ulcers, esophageal ulcers, and even potential cancer risks.

In short, I recommend letting food sit for a while after cooking before eating. I've lived abroad, so I prefer colder foods; those who enjoy cold dishes might want to try this.