Smoking – health risks
You can eat five portions of fruit or veg a day and exercise regularly – but healthy behaviour means little if you continue to smoke.
The message that 'smoking is bad for you' is an old one, so not everyone gives it their full attention.
Below we list the health risks of smoking.
Why quit smoking?
Most people know that smoking can cause lung cancer, but it can also cause many other cancers and illnesses.
Smoking directly causes over 100,000 deaths in the UK each year and contributes to many more.
Of these deaths, about 42,800 are from smoking-related cancers, 30,600 from cardiovascular disease and 29,100 die slowly from emphysema and other chronic lung diseases.
How do cigarettes damage health?
Cigarettes contain more than 4000 chemical compounds and at least 400 toxic substances.
When you inhale, a cigarette burns at 700°C at the tip and around 60°C in the core. This heat breaks down the tobacco to produce various toxins.
As a cigarette burns, the residues are concentrated towards the butt.
The products that are most damaging are:
tar, a carcinogen (substance that causes cancer)
nicotine is addictive and increases cholesterol levels in your body
carbon monoxide reduces oxygen in the body
components of the gas and particulate phases cause chronic obstructive pulmonary disorder (COPD).
The damage caused by smoking is influenced by:
the number of cigarettes smoked
whether the cigarette has a filter
how the tobacco has been prepared.
Smoking affects how long you live
Research has shown that smoking reduces life expectancy by seven to eight years.
Of the 300 people who die every day in the UK as a result of smoking, many are comparatively young smokers.
The number of people under the age of 70 who die from smoking-related diseases exceeds the total figure for deaths caused by breast cancer, AIDS, traffic accidents and drug addiction.
Non-smokers and ex-smokers can also look forward to a healthier old age than smokers.
Major diseases caused by smoking
Cardiovascular disease
Cardiovascular disease is the main cause of death due to smoking.
Hardening of the arteries is a process that develops over years, when cholesterol and other fats deposit in the arteries, leaving them narrow, blocked or rigid. When the arteries narrow (atherosclerosis), blood clots are likely to form.
Smoking accelerates the hardening and narrowing process in your arteries: it starts earlier and blood clots are two to four times more likely.
Cardiovasular disease can take many forms depending on which blood vessels are involved, and all of them are more common in people who smoke.
Coronary thrombosis: a blood clot in the arteries supplying the heart, which can lead to a heart attack. Around 30 per cent are caused by smoking.
Cerebral thrombosis: the vessels to the brain can become blocked, which can lead to collapse, stroke and paralysis. Damage to the brain's blood supply is also an important cause of dementia.
If the kidney arteries are affected, then high blood pressure or kidney failure results.
Blockage to the vascular supply to the legs may lead to gangrene and amputation.
Smokers tend to develop coronary thrombosis 10 years earlier than non-smokers, and make up 9 out of 10 heart bypass patients.
Cancer
Smokers are more likely to get cancer than non-smokers. This is particularly true of lung cancer, throat cancer and mouth cancer, which hardly ever affect non-smokers.
The link between smoking and lung cancer is clear.
Ninety percent of lung cancer cases are due to smoking.
If no-one smoked, lung cancer would be a rare diagnosis – only 0.5 per cent of people who've never touched a cigarette develop lung cancer.
One in ten moderate smokers and almost one in five heavy smokers (more than 15 cigarettes a day) will die of lung cancer.
The more cigarettes you smoke in a day, and the longer you've smoked, the higher your risk of lung cancer. Similarly, the risk rises the deeper you inhale and the earlier in life you started smoking.
For ex-smokers, it takes approximately 15 years before the risk of lung cancer drops to the same as that of a non-smoker.
If you smoke, the risk of contracting mouth cancer is four times higher than for a non-smoker. Cancer can start in many areas of the mouth, with the most common being on or underneath the tongue, or on the lips.
Other types of cancer that are more common in smokers are:
bladder cancer
cancer of the oesophagus
cancer of the kidneys
cancer of the pancreas
cervical cancer
COPD
Chronic obstructive pulmonary disease (COPD) is a collective term for a group of conditions that block airflow and make breathing more difficult, such as:
emphysema – breathlessness caused by damage to the air sacs (alveoli)
chronic bronchitis – coughing with a lot of mucus that continues for at least three months.
Smoking is the most common cause of COPD and is responsible for 80 per cent of cases.
It's estimated that 94 per cent of 20-a-day smokers have some emphysema when the lungs are examined after death, while more than 90 per cent of non-smokers have little or none.
COPD typically starts between the ages of 35 and 45 when lung function starts to decline anyway.
In smokers, the rate of decline in lung function can be three times the usual rate. As lung function declines, breathlessness begins.
As the condition progresses, severe breathing problems can require hospital care. The final stage is death from slow and progressive breathlessness.
Other risks caused by smoking
Smoking raises blood pressure, which can cause hypertension (high blood pressure) – a risk factor for heart attacks and stroke.
Couples who smoke are more likely to have fertility problems than couples who are non-smokers.
Smoking worsens asthma and counteracts asthma medication by worsening the inflammation of the airways that the medicine tries to ease.
The blood vessels in the eye are sensitive and can be easily damaged by smoke, causing a bloodshot appearance and itchiness.
Heavy smokers are twice as likely to get macular degeneration, resulting in the gradual loss of eyesight.
Smokers run an increased risk of cataracts.
Smokers take 25 per cent more sick days year than non-smokers.
Smoking stains your teeth and gums.
Smoking increases your risk of periodontal disease, which causes swollen gums, bad breath and teeth to fall out.
Smoking causes an acid taste in the mouth and contributes to the development of ulcers.
Smoking also affects your looks: smokers have paler skin and more wrinkles. This is because smoking reduces the blood supply to the skin and lowers levels of vitamin A.
Smoking and impotence
For men in their 30s and 40s, smoking increases the risk of erectile dysfunction (ED) by about 50 per cent.
Erection can't occur unless blood can flow freely into the penis, so these blood vessels have to be in good condition.
Smoking can damage the blood vessels and cause them to degenerate: nicotine narrows the arteries that lead to the penis, reducing blood flow and the pressure of blood in the penis.
This narrowing effect increases over time, so if you haven't got problems now, things could change later.
Erection problems in smokers may be an early warning signal that cigarettes are already damaging other areas of the body – such as the blood vessels that supply the heart.
Smoking and others
There are many health-related reasons to give up cigarettes – not just for smokers, but to protect those around you.
Babies born to mothers who smoke during pregnancy are twice as likely to be born prematurely and with a low birth weight.
Passive smoking
The 'side-stream' smoke that comes off a cigarette between puffs carries a higher risk than directly inhaled smoke.
Children who grow up in a home where one or both of their parents smoke have twice the risk of getting asthma and asthmatic bronchitis. They also have a higher risk of developing allergies.
Infants under two years old are more prone to severe respiratory infections and cot death.
For adults, passive smoking seems to increase the risk of lung cancer, but the evidence for an increased risk of heart disease is not yet conclusive.
Thinking about quitting?
As well as reducing your risk of getting a smoking-related illness, there are other benefits to quitting smoking.
General health improves – tiredness and headaches can be linked to smoking.
Your sense of taste and smell improve.
Your heart will be less strained and work more efficiently.
Stopping smoking is the single biggest thing you can do to improve your health, but it's a difficult task.
Smokers who are trying to kick their habit may be disappointed to find there's no single quit method that guarantees success.
The weight of evidence suggests that smokers should set a date to stop, and do their best to quit completely from this point.
On average it takes four to five attempts to give up, and there are a number of things that can help willpower.
Nicotine replacement treatment (NRT) in the form of gum, skin patches or nasal spray.
Zyban (bupropion) is a medicine that's licensed to help smoking cessation.
Champix (varenicline): a medicine that mimics the effect of nicotine in the body, and so reduces the urge to smoke and also reduces withdrawal symptoms. Varenicline can double your chance of successfully quitting
Behaviour modification programmes.
Alternative therapies such as acupuncture and hypnosis.
Research shows that people who take part in a full 'quit smoking' programme, including behavioural therapies and medication, may increase their chance of successfully quitting from about 3 per cent on willpower alone to over 30 per cent.
10 Surprising Health Benefits of Beer
Beer drinkers rejoice: Your favorite brew may be healthier than you think.
For years, wine drinkers have indulged without guilt, reveling in the news that red wine can help protect against heart disease. Recent research shows that beer can also be good for what ails you, from reducing risk for broken bones to helping warding off diabetes and mental decline. It can even increase longevity, a large study suggests.
However, the key to tapping into beer’s benefits is moderation, meaning just one 12-ounce beer per day for women and two for men. Heavy drinking ups the threat of liver damage, some cancers, and heart problems. Bingeing on brewskis can also make you fat, since a 12-ounce regular beer has about 150 calories, while light beer has about 100.
Here are 10 surprising—and healthy—reasons to cheer about your next beer.
1. Stronger Bones
Beer contains high levels of silicon, which is linked to bone health. In a 2009 studyat Tufts University and other centers, older men and women who swigged one or two drinks daily had higher bone density, with the greatest benefits found in those who favored beer or wine. However, downing more than two drinks was linked toincreased risk for fractures.
For the best bone-building benefits, reach for pale ale, since a 2010 study of 100 types of beer from around the word identified these brews as richest in silicon, while light lagers and non-alcoholic beers contained the least.
2. A Stronger Heart
A 2011 analysis of 16 earlier studies involving more than 200,000 people, conducted by researchers at Italy’s Fondazion di Ricerca e Cura, found a 31 percent reduced risk of heart disease in those who quaffed about a pint of beer daily, while risk surged in those who guzzled higher amounts of alcohol, whether beer, wine, or spirits.
More than 100 studies also show that moderate drinking trims risk of heart attacks and dying from cardiovascular disease by 25 to 40 percent, Harvard reports. A beer or two a day can help raise levels of HDL, the “good” cholesterol that helps keep arteries from getting clogged.
3. Healthier Kidneys
A study in Finland singled out beer among other alcoholic drinks, finding that each bottle of beer men drank daily lowered their risk of developing kidney stones by 40 percent. One theory is that beer’s high water content helped keep kidneys working, since dehydration increases kidney stone risk.
It’s also possible that the hops in beer help curb leeching of calcium from bones; that “lost” calcium also could end up in the kidneys as stones.
4. Boosting Brain Health
A beer a day may help keep Alzheimer’s disease and other dementia at bay, researchers say.
A 2005 study tracking the health of 11,000 older women showed that moderate drinkers (those who consumed about one drink a day) lowered their risk of mental decline by as much as 20 percent, compared to non-drinkers. In addition, older women who downed a drink a day scored as about 18 months “younger,” on average, on tests of mental skills than the non-drinkers.
5. Reduced Cancer Risk
A Portuguese study found that marinating steak in beer eliminates almost 70 percent of the carcinogens, called heterocyclic amines (HCAs) produced when the meat is pan-fried. Researchers theorize that beer’s sugars help block HCAs from forming.
Scientists also have found that beer and wine contain about the same levels of antioxidants, but the antioxidants are different because the flavonoids found in hops and grapes are different.
6. Boosting Vitamin Levels
A Dutch study, performed at the TNO Nutrition and Food Research Institute, found that beer-drinking participants had 30 percent higher levels of vitamin B6 levels in their blood than their non-drinking counterparts, and twice as much as wine drinkers. Beer also contains vitamin B12 and folic acid.
7. Guarding Against Stroke
Researchers at the Harvard School of Public Health found that moderate amounts of alcohol, including beer, help prevent blood clots that block blood flow to the heart, neck and brain—the clots that cause ischemic stroke, the most common type.
8. Reduced Risk for Diabetes
Drink up: A 2011 Harvard study of about 38,000 middle-aged men found that when those who only drank occasionally raised their alcohol intake to one to two beers or other drinks daily, their risk of developing type 2 diabetes dropped by 25 percent. The researchers found no benefit to quaffing more than two drinks. The researchers found that alcohol increases insulin sensitivity, thus helping protect against diabetes.
9. Lower Blood Pressure
Wine is fine for your heart, but beer may be even better: A Harvard study of 70,000 women ages 25 to 40 found that moderate beer drinkers were less likely to develop high blood pressure—a major risk factor for heart attack—than women who sipped wine or spirits.
10. Longer Life
In a 2005 review of 50 studies, the U.S. Department of Agriculture (USDA) reported that moderate drinkers live longer. The USDA also estimates that moderate drinking prevents about 26,000 deaths a year, due to lower rates of heart disease, stroke, and diabetes.
These benefits appear to apply in other countries as well, with an earlier studyreporting that, “if European beer drinkers stopped imbibing, there would be a decrease in life expectancy of two years—and much unhappiness.”