What is senescence? What are the symptoms???

It is. Premature aging.

Sneility is a relatively rare problem, but it has now become an epidemic. It is estimated that there are currently more than 2 million people living with aging diseases in the United States. Some prominent psychiatrists estimate that by 2020 or so, more than 5 million Americans will suffer from the same affliction, and half of Americans over the age of 85 will suffer from a form of dementia called Alzheimer's disease.

In 2002, researchers discovered that the onset of progeria is caused by a mutation in a gene called LMNA, which normally makes lamin. Due to the lack of this substance, progeria will be triggered.

Progeria self-test: 1The face is "old" for unknown reasons, the complexion is dull, and there are dark spots, which are difficult to cover with expensive cosmetics.

2.The hair is a little yellowish and split ends, and it falls out when you wash and comb your hair.

3.Frequent use of moisturizing cream, but also can't stop ** dryness and roughness, no luster elasticity.

4.My eyes feel astringent, I tear up as soon as I turn on the computer, and I can't work properly.

5.Particularly irritable, lack of concentration, feeling particularly stressed, loss of appetite, and extreme fatigue.

6.Sleep disorders, can't fall asleep when you want to, can't wake up when you should wake up, smokes more and more fiercely, coffee cup after cup.

7.It has almost lost its resistance to disease, and has become a dangerous wall that can be pushed down, and cold symptoms such as headache and fever are difficult to endure every day.

What are the symptoms of aging?

It's inevitable that everyone will grow old slowly. There are many manifestations of aging, such as wrinkles, sagging, or weakened internal organ function. And when the human body signs old, there are generally precursors.

**It will become very flabby, and the personality will change, it will also become sentimental, there will be more things to worry about, wrinkles will appear around the corners of the eyes, ** will also appear a lot of wrinkles.

The manifestation of aging should be the appearance of the face becoming sallow, then the corners of the eyes drooping, and the corners of the mouth drooping, followed by wrinkles on the face. And it will become particularly flabby. Sometimes you can't remember things clearly, which is a sign of aging.

1. Manifestations of aging of human physiological functions:

Decline in the function of the cardiovascular system. For example, myocardial fibers gradually shrink, senile pigment (lipofuscin) is deposited in myocardial cells, and heart valves become hypertrophied and hardened, and their elasticity is reduced.

Aging of the respiratory organs. Manifested by decreased lung volume, marked respiratory function, and reduced compensatory capacity.

Changes in the digestive system. It is mainly due to the weakening of oral and gastrointestinal function, and atrophic changes in gums and teeth.

Musculoskeletal motor system changes. It is mainly manifested in the thinning of muscle fibers, the decrease in elasticity and the weakening of contractility with age; The organic components in the bones are reduced, and the inorganic salts are increased, which leads to the reduction of elasticity and toughness of the bones, and the tendency to fracture is easy.

Nervous system changes. It is mainly manifested by some degree of loss of brain cells; decreased nerve conduction velocity; Sluggish movements in the elderly, reflecting reduced flexibility, etc.

2. Manifestations of human brain aging:

1. Decreased visuospatial ability.

People's recognition and spatial positioning of objects in the three-dimensional world belong to visuospatial abilities. The decline of visuospatial ability will make people have obstacles in judging directions, such as getting lost, unable to distinguish directions, and not knowing which building or unit their home is; When you take the bus, you will take one more stop or one less stop.

2. Disorder of emotional control.

In general, people can control their emotions better. Emotional control is impaired, and it can manifest as apathy, loss of interest in other things, irritability, and emotional instability.

3. Reduced execution ability.

This includes the ability to plan, organize, make decisions and execute, and the ability to simplify the environment and improve productivity. When the ability to execute is reduced, it is often impossible to complete multiple tasks, and can only do things one by one, or even one thing can not be done well.

4. Decreased concentration.

It is not too difficult to concentrate at work, but as we get older, some people will have difficulty concentrating, such as when others are talking, and they will be inconsciously distracted, which is a sign of decreased concentration.

5. Poor memory.

Getting worse and worse memory is the mantra of many people, and it is also the most obvious and easy to detect manifestation of dementia. For example, if you keep repeating an action or saying the same sentence, you always think that you have just finished eating and are going to wash the dishes. These manifestations of memory loss may affect people's normal lives.