You know that smoking is very likely to cause lung cancer, right?
I don't think anyone knows that smoking is harmful anymore.
I also smoked cigarettes for nearly 20 years before,
and I remember being unable to quit smoking easily
because of the habits and addiction of cigarettes.
Probably, among the people watching this video right now,
I think there are a lot of people
who want to quit smoking but can't quit.
This time, I'm going to try to find out how cigarettes are related to cancer.
But surprisingly, when you think of cigarettes, you think of lung cancer.
But, besides that, we find that it has a lot to do with cancer.
I created this video because I thought 
that I should alert not only smokers but also non-smokers.
If you're curious, please watch the video until the end.
In the past, tobacco was good in Korea.
Of course, I used to smoke in those days.
In Korea, the adult smoking rate was incomparably high compared to other countries.
If you ask a street passer-by, 'Can I get a cigarette worth?'
It was a time when people were willing to give them cigarettes and when they meet someone, they naturally offered them cigarettes.
In those days, you could even smoke on buses, trains, and airplanes.
It's the difference between heaven and earth compared to now.
However, now Korea has no place in the world for smokers,
so it is worth complaining as a smoker.
However, if you think about your health and economy, it's time to stay away from smoking.
Smoking can cause cancer almost anywhere in the body.
It causes cancer in the mouth, throat, esophagus, stomach, colon, rectum, liver, pancreas, larynx, bronchi, kidneys,
bladder, cervix, and causes acute myelogenous leukemia.
Also, if a person with cancer smokes, he or she is more likely to die than a non-smoker.
Smoke-free cigarettes, like chewing cigarettes, cause esophageal cancer, oral cancer and pancreatic cancer.
Looking at the cancers that occur in the organs mentioned earlier, there are quite a few cancers listed,
so it is not necessary to pick cancers related to tobacco.
In cancer patients, the poison of tobacco smoke weakens the body's immune system, 
making it more difficult to kill cancer cells.
The cancer cells then continue to grow without stopping.
It's also important to remember that the poison of cigarette smoke damages or alters the DNA of cells,
leaving them out of control, causing cancer.
The National Cancer Institute under the NIH explains 
the harms of tobacco and the good things it can bring.
The picture is the homepage of the National Cancer Institute of America.
It's an explanation of how harmful the chemicals are in cigarettes.
There are over 7,000 chemicals in tobacco smoke,
of which at least 250 are harmful substances such as hydrogen cyanide, carbon monoxide, and ammonia.
The hydrogen cyanide here is chemically HCN,
which is a weak acid. So, when it becomes ionized, it becomes like this.
Potassium is attached here instead of hydrogen,
so when it becomes KCN, this is the highly toxic potassium cyanide,
so HCN itself is also extremely toxic.
And Carbon Monoxide is CO.
Carbon dioxide is CO2, and Carbon monoxide is CO.
Oxygen combines hemoglobin. 
Carbon monoxide binds hemoglobin about 200 times
stronger than the ability of hemoglobin to bind oxygen.
So, of course, instead of oxygen binding with hemoglobin,
carbon monoxide will dominate most of the hemoglobin.
So it's a very harmful substance that drops the ability to transport oxygen.
And there's ammonia. Ammonia is a toxic substance.
And at least 69 of them are known as carcinogens.
Here's an example from here.
It's a classic example. If you look at some of these carcinogens,
Here's the acetaldehyde, followed by aromatic amines.
Benzene, a very famous carcinogen.
And there's beryllium, and then here's the arsenic.
And cadmium, chromium, things like that.
It's a substance that's common in formaldehyde and sick house syndrome.
But this is also carcinogenic.
And we're introducing vinyl chloride.
Next, the harmful effects of second-hand smoking can be caused.
The US Environmental Protection Agency, the US National Toxicology Program-
here toxicology means not animals at that time,
but the poisons that deal with poisons-
Secondhand smoke is classified as a carcinogen.
Nonsmokers can develop lung cancer through secondhand smoke,
and in the United States, 7300 people die of lung cancer each year from secondhand smoke.
Living with smokers increases the risk of lung cancer and stroke in non-smokers by 20 to 30 percent.
Indirect smoking also causes diseases and early death in non-smoking adults and children.
Exposure to secondhand smoke stimulates airway and immediately harms the human heart and blood vessels.
Smoking is highly addictive, and nicotine included in cigarettes is the main cause of addiction.
The addiction caused by nicotine is 
similar to that of drugs such as heroin and cocaine.
Nicotine is naturally present in cigarettes, 
but tobacco companies intentionally manufacture cigarettes
to contain enough nicotine to cause and sustain addiction.
Nicotine is absorbed into the bloodstream through the inner walls of the mouth and lungs and travels to the brain in seconds.
There is no safe level of smoking. 
Smoking one cigarette a day throughout your life can cause smoking-related cancer and premature death.
Since we only talked about the depressing stories that occur
when smoking, we should also talk about the bright stories that occur when quitting smoking.
Let's take a look at the immediate benefits of quitting smoking 
and what are the benefits of quitting smoking for long periods of time?
The immediate effects of smoking cessation include abnormally high heart rate and blood pressure 
returning to normal when smoking, and carbon monoxide levels begin to decrease.
Carbon monoxide was introduced earlier.
The ability to combine with hemoglobin, which carries oxygen, is about 200 times stronger than oxygen.
Then of course, it reduces the blood's ability to transport oxygen, so we have to think about this.
Less coughing, less phlegm, and greater lung capacity in a few months.
The risk of cancer, heart disease, and other chronic diseases is lower than if you continue to smoke.
The benefits of long-term smoking cessation reduce the risk of many diseases
such as cancer, heart disease and chronic obstructive pulmonary disease.
The picture shows a paper. 
In this paper, smokers who quit smoking before the age of 40 reduce the probability of premature death
from smoking-related diseases by about 90%, and smokers who quit smoking between the ages of 45 and 54 
reduce the premature mortality rate by about two-thirds.
The content of this paper explains the risks of smoking
and the merits and benefits of quitting smoking.
Here's the description for each age group.
And here's the source of this paper.
Regardless of age, people who quit smoking have a significant increase in life expectancy compared to those who continue to smoke.
However, it should be borne in mind that the younger a young person quits,
the lower their life expectancy, as well as their risk from many diseases, 
so the benefits of quit smoking are much greater.
We know that cigarettes are very addictive 
and cannot be quenched easily.
But if you think that you can harm your family
or other neighbors by smoking, 
you should quit?
It's a common ground where we all have to live together.
It is not easy to quit smoking,
so there will be better ways to get help from others.
It's not about pride.
How good would it be if I could reduce
the damage to my family and neighbors by quitting smoking?
Even with the help of others, if you quit smoking successfully, 
you can have a good effect on your family and neighbors.
If you are thinking about quitting smoking,
using a public health center smoking cessation clinic would be helpful.
That's all for today's video. Thank you for watching until the end.
In the next video, I look forward to seeing you all become healthier and happier. 
If this video helps, I'm sure you'll even "subscribe, like, and set notifications."
Everyone, thank you for your hard work. Good-bye.
