How do cigarettes affect the body? – Krishna Sudhir

How do cigarettes affect the body? – Krishna Sudhir


Cigarettes aren’t good for us. That’s hardly news–we’ve known
about the dangers of smoking for decades. But how exactly do cigarettes harm us? Let’s look at what happens
as their ingredients make their way through our bodies, and how we benefit physically
when we finally give up smoking. With each inhalation, smoke brings its more than 5,000
chemical substances into contact with the body’s tissues. From the start, tar,
a black, resinous material, begins to coat the teeth and gums, damaging tooth enamel,
and eventually causing decay. Over time, smoke also damages
nerve-endings in the nose, causing loss of smell. Inside the airways and lungs, smoke increases
the likelihood of infections, as well as chronic diseases
like bronchitis and emphysema. It does this by damaging the cilia, tiny hairlike structures whose job it is
to keep the airways clean. It then fills the alveoli, tiny air sacs that enable the exchange
of oxygen and carbon dioxide between the lungs and blood. A toxic gas called carbon monoxide
crosses that membrane into the blood, binding to hemoglobin and displacing the oxygen it would usually have transported
around the body. That’s one of the reasons smoking
can lead to oxygen deprivation and shortness of breath. Within about 10 seconds, the bloodstream carries a stimulant
called nicotine to the brain, triggering the release of dopamine
and other neurotransmitters including endorphins that create the pleasurable sensations
which make smoking highly addictive. Nicotine and other chemicals
from the cigarette simultaneously cause constriction
of blood vessels and damage their delicate
endothelial lining, restricting blood flow. These vascular effects lead
to thickening of blood vessel walls and enhance blood platelet stickiness, increasing the likelihood
that clots will form and trigger heart attacks and strokes. Many of the chemicals inside cigarettes
can trigger dangerous mutations in the body’s DNA that make cancers form. Additionally, ingredients like arsenic
and nickel may disrupt the process of DNA repair, thus compromising the body’s ability
to fight many cancers. In fact, about one of every three
cancer deaths in the United States is caused by smoking. And it’s not just lung cancer. Smoking can cause cancer
in multiple tissues and organs, as well as damaged eyesight and weakened bones. It makes it harder
for women to get pregnant. And in men,
it can cause erectile dysfunction. But for those who quit smoking, there’s a huge positive upside with almost immediate
and long-lasting physical benefits. Just 20 minutes after
a smoker’s final cigarette, their heart rate and blood pressure
begin to return to normal. After 12 hours,
carbon monoxide levels stabilize, increasing the blood’s
oxygen-carrying capacity. A day after ceasing, heart attack risk begins to decrease as
blood pressure and heart rates normalize. After two days, the nerve endings responsible
for smell and taste start to recover. Lungs become healthier
after about one month, with less coughing
and shortness of breath. The delicate hair-like cilia
in the airways and lungs start recovering within weeks, and are restored after 9 months,
improving resistance to infection. By the one-year anniversary of quitting, heart disease risk plummets to half
as blood vessel function improves. Five years in, the chance of a clot forming
dramatically declines, and the risk of stroke
continues to reduce. After ten years, the chances
of developing fatal lung cancer go down by 50%, probably because the body’s ability
to repair DNA is once again restored. Fifteen years in, the likelihood
of developing coronary heart disease is essentially the same
as that of a non-smoker. There’s no point pretending
this is all easy to achieve. Quitting can lead to anxiety
and depression, resulting from nicotine withdrawal. But fortunately,
such effects are usually temporary. And quitting is getting easier,
thanks to a growing arsenal of tools. Nicotine replacement therapy through gum, skin patches, lozenges, and sprays may help wean smokers off cigarettes. They work by stimulating
nicotine receptors in the brain and thus preventing withdrawal symptoms, without the addition
of other harmful chemicals. Counselling and support groups, cognitive behavioral therapy, and moderate intensity exercise also help smokers stay cigarette-free. That’s good news, since quitting puts you and your body
on the path back to health.

100 thoughts on “How do cigarettes affect the body? – Krishna Sudhir

  1. Seriously though ima bout smoke one I’ve gone a few months at my best…. then the times I’ve been locked up. Neways time to smoke

  2. I quit back in 2016 after my dad got lung cancer from smoking. The thing is that it is possible to quit but you truly have to want to quit yourself and mean it. I smoked for 15 years and loved it until I decided I needed to stop for myself and not pretend to want to quit in order to satisfy others.

  3. If you’re trying to quit don’t bother looking through these comments lol. Take it seriously unlike most of these idiots, the money you’ll save will take you on your dream vacation

  4. I smoked for 7 years, and decided to quit for good once 2019 ended. I haven’t had one cigarette for 2 months! And it’s honestly a lot easier to quit than people make it seem. I feel like people don’t want to quit because they’re afraid of the withdrawals, but it’s so worth it when you feel 1000% better!!

  5. I am struggling to quit smoking. I dont know what to do. Once i smoke i lost appetite and feel depressed and have me negatif thoughts but i still could not quit smokinh due to stres. 😭😭😭

  6. Honestly it was the “1 hour this part of the body goes back to normal” then I was all “oh neat, I wonder how my body would change after a day to a week to a year” I liked to think how my body was healing and recovering back to more normal. Im a before and after person so it helps.

  7. My father's brain was damaged due to chain smoking and he died when I was 12. I've promised myself I'll never smoke and put my family through that suffering.
    Hope I can keep my promise

  8. This worries me. My dad is 54, he’s been smoking since he was 17 I believe all because his friends told him to try it because “it’s cool”. He tells me he wants to quit but it’s so hard, he always says he wishes he never put the cigarette in his mouth. He told me he has tried to quit before and once made it a few months but soon spiraled out of control and back to smoking. I’m just hoping someone can give him that scare that will make something click in his mind.

  9. It's almost 2 year to quitting smoking….
    It was not as that much tough as I was thinking….
    Yes I love my self …😍😍😍… I love to thanks my self I did it for me….
    I love me 😍😍😍😘😘😘

  10. why people even start smoking and become addicted to it is truely beyond my comprehension. you knew it was bad for health when you first started smoking but you didnt care and wanted to be addicted to something or you think its cool to smoke and to fit in with smoking friends. no other explanation.

  11. just another form of slow suicide….people who still smoke after hearing it will kill them just don't love themselves enough and don't have a strong will to live long & healthy. So we have to help them, not judge or punish them.

  12. I quit in September 2017 and im still smoke free!! I used to miss smoking after meals cause that was the only time I ever really enjoyed them. Its very rare I get any sort of craving now, when I walk past people smoking I hold my breath as the smell makes me almost vomit. Im glad ive stopped, it doesnt do you any favours.

  13. I've quit video games, fapping and now hookah for good alhamdulilah it has been easy for me with the help of God almighty ❤.

  14. The title intrigued me, but upon watching I right quickly realized this was an overly simplistic cartoon. On to the next science based video.

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