Feeling the aging of Zhang Baotong 2019.4.9

We may feel this way, when we were young, our family was very poor, and if we could eat a good meal and good food one day, we would feel that it was very fragrant. I have this impression myself. I remember when I was four years old, my family was still in Pucheng, Shaanxi Province, Xiuluo River Railway Bridge. In front of our family compound, there are often local farmers selling the prepared noodles. The jelly seems to be made of mung beans, very white and white, you can buy a small bowl for five cents, mix it with oil and spicy seeds, it is particularly delicious. I seem to have only eaten it once, and I was deeply impressed. However, when I came to Xi'an, I saw someone selling jelly on the street, so I bought a bowl. I don't feel how delicious it tastes anymore.

There may be a number of other factors here, but the feeling of aging may be the main cause. Human aging is not just the aging of age, but the aging of all organs of the whole body. Older people certainly don't eat as sweet as young people because their ability to appreciate food has declined.

In fact, it's not just a matter of taste. It is also related to smell. When we eat, we rely on a combination of taste and smell to experience taste. The next time you eat fruit-flavored candy, try it. Take a handful of candy, close your eyes, and pick one. Pinch your nose while putting the candy in your mouth. There's a good chance you'll taste the sweetness and sourness of the candy, but you don't know what special it tastes like. If you let go of your nose, you will feel the aroma of banana grapes in your mouth.

Taste is a finite sensation, and the gustatory nerves in the mouth and tongue can only detect combinations of sweet, sour, salty, and bitter. On the other hand, people's tastes vary greatly.

When you chew a piece of candy, you inhale the candy's chemicals through your mouth and exhale through your nose. As they pass through the nose, these chemicals trigger receptors that send odor and taste signals to the brain.

As we age, our bodies weaken, and our sense of taste and taste receptors are no exception. While the taste buds in the mouth tend to lose some sensitivity, the decrease in the number of active taste receptors in the nose makes it harder for older adults to actually taste delicious food.

In addition to smell and taste, we also have hearing, sight and feeling.

The aging of vision and hearing is perhaps most acutely felt by people. My eyesight has always been between 1.2 and 1.5 when I was younger. However, when I was in my 40s, I had a viral keratitis, and my vision deteriorated sharply, dropping to between 0.8 and 1.0. Especially after retirement, I write for the website every day. The eyes are getting worse and worse. The most prominent phenomenon is that if you type too much, or see too much, your eyes will start to become blurry. It's not clear what to watch, and even watching TV is blurry. I went to the hospital and asked the doctor, who said it was visual fatigue. I'm not in a serious situation, and I've seen many people who are even younger than me wearing reading glasses when reading books and newspapers and on their mobile phones. If you don't wear reading glasses, you can't read the words on your phone.

Poor hearing can sometimes be embarrassing. When I was younger, I took and passed the test abroad, and I listened to the Voice of America radio for two or three hours a day to practice my listening, as well as to practice the TOEFL listening test. As a result, my ears were a little broken. If others don't speak loudly enough, they can only hear the voice, not the content. Sometimes, when people talk to me, I stand across from them, watch their mouths move, and I can hear voices, but I don't know what they're saying. Sometimes I'm too embarrassed to let others say it again, so I just smile and show that I understand. Later, as I grew older, this phenomenon became more and more obvious.

There is also a type of person who has poor hearing, that is, a person who speaks loudly. Because they spoke so loudly that they broke their eardrums. I remember when I was in middle school, there was a teacher who was so loud that he could be heard from half a building. His hearing is very poor, and if we don't speak loudly to him, he won't be able to hear clearly. As I got older, later, I saw that he was already wearing hearing aids.

The sense of touch seems to have an effect on human aging, but except for some special types of work, this effect does not seem to be very great for ordinary people.

Human aging can directly lead to numbness and dullness of hearing, sight, smell, taste and touch, and with the aging of age and the weakening of resistance, it can also cause many diseases such as eye inflammation, ear inflammation, oral inflammation and nostril inflammation. All of these can cause illness and damage to our five senses. And the numbness and dullness of these five senses can make us feel that we are already old.