When most people think of smoking, they picture lung cancer. Yet for millions of smokers, the first sign of trouble may be a heart attack or a stroke. A recent study in BMJ Open reveals a troubling gap: while over 90% of smokers across 46 countries knew smoking causes lung cancer, far fewer understood its cardiovascular dangers.
Smoking is a leading cause of cardiovascular disease. In 2019, heart disease and stroke together accounted for about 2.6 million smoking-related deaths worldwide - twice the 1.3 million deaths from lung cancer. Despite this, only 85% of surveyed smokers knew about the heart disease link, 80% about heart attacks, and just 66% about strokes.
The damage starts with toxic chemicals in cigarette smoke, which injure blood vessel linings, promote inflammation, and accelerate plaque buildup. Smoking also makes blood more likely to clot, blocking flow to the heart or brain. Nicotine raises heart rate and blood pressure, while carbon monoxide reduces oxygen in the blood. Even light smoking carries substantial risk.
Secondhand smoke poses similar dangers. Non-smokers inhale many of the same toxins, increasing their risk of coronary heart disease. The study estimates secondhand smoke caused about 1.3 million deaths among non-smokers in 2021. Yet fewer than half of people in several high-income countries recognized this risk.
So what can be done? Quitting is the single most effective way to protect your heart and brain. Nicotine replacement therapy, medications, counseling, and quitlines can all help. Even cutting down brings meaningful benefits. Never smoke indoors or near others, especially children and pregnant women. Smoke-free homes and workplaces protect everyone.
The message is clear: smoking doesn’t just harm the lungs, it silently attacks the heart and brain. If you smoke, take the first step today: set a quit date, seek help, and cut down if quitting feels too hard. Do it for yourself, and for those around you who deserve clean air. Every cigarette avoided is a gift to your heart, and to those you love.
When most people think of smoking, they picture lung cancer. Yet for millions of smokers, the first sign of trouble may be a heart attack or a stroke. A recent study in BMJ Open reveals a troubling gap: while over 90% of smokers across 46 countries knew smoking causes lung cancer, far fewer understood its cardiovascular dangers.
Smoking is a leading cause of cardiovascular disease. In 2019, heart disease and stroke together accounted for about 2.6 million smoking-related deaths worldwide - twice the 1.3 million deaths from lung cancer. Despite this, only 85% of surveyed smokers knew about the heart disease link, 80% about heart attacks, and just 66% about strokes.
The damage starts with toxic chemicals in cigarette smoke, which injure blood vessel linings, promote inflammation, and accelerate plaque buildup. Smoking also makes blood more likely to clot, blocking flow to the heart or brain. Nicotine raises heart rate and blood pressure, while carbon monoxide reduces oxygen in the blood. Even light smoking carries substantial risk.
Secondhand smoke poses similar dangers. Non-smokers inhale many of the same toxins, increasing their risk of coronary heart disease. The study estimates secondhand smoke caused about 1.3 million deaths among non-smokers in 2021. Yet fewer than half of people in several high-income countries recognized this risk.
So what can be done? Quitting is the single most effective way to protect your heart and brain. Nicotine replacement therapy, medications, counseling, and quitlines can all help. Even cutting down brings meaningful benefits. Never smoke indoors or near others, especially children and pregnant women. Smoke-free homes and workplaces protect everyone.
The message is clear: smoking doesn’t just harm the lungs, it silently attacks the heart and brain. If you smoke, take the first step today: set a quit date, seek help, and cut down if quitting feels too hard. Do it for yourself, and for those around you who deserve clean air. Every cigarette avoided is a gift to your heart, and to those you love.
