ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

smoking and disease

Updated on October 8, 2012
The poisonous ingredients it contains
The poisonous ingredients it contains
The grave consequences of smoking
The grave consequences of smoking

Smoking and Disease

1. Tar:-
Settles on the lining of the airways.
Stimulates goblet cells and mucous glands to enlarge and secrete excessive mucus.
Inhibits the cleaning action of cilia by destroying most of it or paralysing it.
Contains carcinogens which stimulate mutation to cause Lung Cancer.
EFFECT- Mucus accumulates in which bacteria, dirt and viruses are collected. Scar tissues and smooth muscles thickening cause the airway to become narrower. Infections develop in the mucus causing inflammation (Bronchitis/Chronic Bronchitis).

Symptoms—severe cough, breathlessness.
Continuous inflammation stimulates phagocytes to leave the blood and line the airways. To do so, they release an enzyme, elastase, which destroys elastin in the walls of the alveoli. With reduced amount of elastin, the alveolar walls do not stretch and recoil much during breathing. This causes the bronchioles to collapse trapping air in the alveolus, making them burst (Emphysema). It reduces the surface area for gas exchange. Heavy coughing from bronchitis can also physically damage the alveolar walls.

2. Carbon monoxide:-
Diffuses into blood and binds with Hb more readily. Hb has a higher affinity towards carbon monoxide.
EFFECT- Reduces the carrying capacity of oxygen of Hb causing deficiency in oxygen for cells. As a result blood pressure increases. Increased blood flow can damage the linings of the coronary and carotid arteries which can lead to the build up of Atheroma (cholesterol, fibres, dead muscle cells and platelets), causing Atherosclerosis. Atherosclerosis in coronary arteries causes Coronary Heart Disease (Angina, Heart attack, Heart failure). Atherosclerosis in the carotid arteries cause them to burst. As a result blood leaks out and spread over the brain in a particular area. The brain tissue in that area is starved of oxygen supply and dies (Stroke).

Symptoms—unable to control body parts(paralysis), dizziness, slurred speech, confusion, blurred vision, loss of vision.

3. Nicotine:-
Drug which is readily absorbed by blood and travels to brain.
EFFECT- Stimulates nervous system to reduce the diameter of arterioles and increase the secretion of adrenaline. This increases the heart rate and blood pressure. There is a decrease in blood supply to the extremities of body. It also increases the stickiness of platelets increasing the risk of blood clot.
Causes Cardiovascular diseases (Stroke, Atherosclerosis, Coronary Heart Disease).

The process of atherosclerosis restricts the flow of blood increasing the risk of blood to clot and form a thrombus.

Formation of Atheroma – Atherosclerosis

Formation of Thrombus – Thrombosis

Low Density Lipoproteins tend to deposit its cholesterol in tissues.
High Density Lipoproteins tend to remove cholesterol from tissues.


    0 of 8192 characters used
    Post Comment

    No comments yet.


    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

    Show Details
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)