ads2

Showing posts with label science. Show all posts
Showing posts with label science. Show all posts

Wednesday 6 July 2022

Back pain or Backbone is a common disease in humans nowadays ?

Is it true that this disease in humans is the result of evolution?

In a way we are paying the price of evolution ??

A: Yes, back and knee pain is found in most people in middle age due to evolution. Back and knee structures evolved millions of years ago when all vertebrates were cattle. The bone is a horizontal unit, so it does not weigh down on the joints of the seals. In addition, the body weight is divided into four legs, so there is not much stress on the joints of the front or back legs. 

When walking on two feet, the lumbar vertebrae became vertical instead of horizontal, so that all the weight of the body above the hips falls on the joints of the spinal cord seals - similarly, more or less all the body weight falls on the knee joints. 

The direction of this stress on the joints changes as you walk or run - the spine and knee joints not only have to carry the weight of the body but also the body has to maintain balance - our brain balances the body. The angle of weight on the spine is constantly changing to maintain it, which we don't realize, but it keeps the spine stressed all the time. 

When we do not consciously try to keep the spine straight while standing and sitting, our poor posture usually puts extra stress on the spine - this spine has been in place for decades. The distance between them decreases or the cushion between them disappears and the seal bones start to collide directly with each other - all these factors lead to chronic back pain.

Tuesday 5 July 2022

Why is the rate of heart attack in women lower than in men ?

We first look at what is a heart attack? In fact, every living cell, including our heart, needs oxygen and nutrients, and blood is given to parts of the body to supply these things. Heart tissues and cells also need a blood supply, and there are coronary arteries to supply blood to the heart. When these coronary arteries become obstructed, the blood supply to the heart tissues is reduced, which does not meet their need for oxygen and nutrients, and the heart tissues begin to weaken, resulting in heart failure. Decreases and a heart attack (myocardial infarction) occurs.

The question is, why are the coronary arteries blocked? There are various reasons for this, but there are basically two reasons. One reason may be that something gets stuck in the coronary artery, such as cholesterol. The second reason may be that nothing is stuck, but the coronary artery has shrunk (shrunk) by itself. Unnecessary vasoconstriction occurs due to which the veins constrict, these chemicals contain chemicals that come into the body from smoking and excessive consumption of alcohol. So far we've seen why heart attacks happen.

Now let's talk about why women have a lower chance of having a heart attack.
In fact, the female sex hormone estrogen plays a role in this. Estrogen is formed in a woman's ovaries, when a woman's menstrual cycle begins (called menarche, which begins between the ages of 12 and 15). The question is how does estrogen reduce heart attack? Above we talked about how high cholesterol causes blockage in the coronary arteries. Cholesterol is a form of lipid (fat), our liver makes cholesterol from other parts of our diet such as carbohydrates, fats, proteins and the rest of the cholesterol we get directly from our diet. Cholesterol is essential for the body, but too much of it is harmful. Cholesterol is fat and fat cannot travel in the blood alone, it has to bind to proteins in the blood to travel in the blood, and proteins and lipids combine to make lipoprotein.
There are two types of cholesterol
One is Low Density Lipoprotein Cholesterol (LDL) and the other is High Density Lipoprotein Cholesterol (HDL).

LDL cholesterol is absorbed directly from the blood into the blood vessels and other tissues of the body, and this cholesterol blocks the coronary arteries of the heart.
The second type of cholesterol, HDL, first enters the liver, where an excess of it is separated from the blood and expelled from the body or converted into something else.
So we can call HDL good cholesterol because its amount is under control while LDL is called bad cholesterol because its amount is out of control and causes blockage of veins.
The estrogen hormone produced in women plays a role in increasing good cholesterol and lowering bad cholesterol. In addition, estrogen opens and relaxes the blood vessels. In addition, this hormone increases the free radicals in the blood. It also eliminates free radicals that cause damage to blood vessels.

This estrogen hormone is not always produced in women, after menopause, that is, at the age at which menstruation stops, the production of estrogen also stops and at this stage women and men are equal for heart disease.
In addition, men generally smoke and drink more than women and do more strenuous work.
It should be noted that in all this we have assumed that the woman is healthy, it is possible that another disease may affect the heart.

Let science is to be science

Our people are so naive that they want the scientists of the world to research science according to their will and in any case draw conclusions that they think are correct. What does this show? This shows that people in our country do not know how science works. There are some basic principles of scientific research and science is not made for the purpose of making someone happy, satisfying one's ego or making someone hateful or angry. Scientists do not go to the laboratory thinking that something has to be proved in every situation. They keep their old ideas outside the laboratory. They go to the laboratory with some questions, the answers to which the universe gives them through experiments.

Science is the best way for man to explore the universe today. If you do not agree with this, then you are in doubt because most of the factors in your life depend on the pattern of science and the inventions it has acquired.

But our naive people insist that scientific research be done according to their will and thinking. The ground realities, however, are that Pakistan ranks 99th in the Global Innovation Index, which is a measure of innovation.

Our general attitude towards science is that science that does not conform to their ideas is thrown in the trash. If science is what they think it is, they thrive, but if the same science uses the same methods to disprove their ideas through hundreds of experiments and observations, they say either science is wrong, or Or science has not yet reached the point where it can comprehend reality.
What is the solution to all this complexity? This is the only solution
That science should be left as science. Science is the knowledge of this world, and science is necessary to live in this world, whether you like it or not.

Essay: Importance of English Language

English language is considered as the most popular language in the world. It is spoken by billions of people from different countries and cu...