Is atrial fibrillation dangerous, and what can I do about it?
Atrial fibrillation substantially raises your chances of dying, heart failure, and stroke, and calls for active treatment. Discuss blood thinners for stroke prevention with your doctor, as well as which lifestyle changes make sense in your particular case.
Atrial fibrillation is a heart rhythm disorder in which the upper chambers of the heart beat chaotically. That may sound harmless, but many studies combined, covering nearly 9.7 million people, show that having atrial fibrillation gives you a 46% higher chance of dying than people without the condition. Doctors are therefore right to take it seriously.
The greatest risk is heart failure: the chance of that is almost five times higher than with a normal heart rhythm. The risk of a stroke caused by a blood clot is more than doubled. Women with the condition have strokes more often than men with the same condition, and also die from them more often. In addition, atrial fibrillation is linked to a 64% higher chance of chronic kidney disease. In people who also have diabetes, the risk of a foot amputation appears to more than quadruple, but that finding comes from one large Korean study and still needs to be confirmed.
The most well-proven way to prevent a stroke is the use of blood thinners. Modern blood thinners that work differently from older vitamin K-based medicines are included in this. Your doctor will decide together with you which medicine suits you best, because blood thinners themselves also increase the risk of bleeding. That calls for a tailored approach.
There is also reasonable evidence that lifestyle changes help, although long-term studies are still scarce. Losing weight if you are overweight, moving more, drinking less alcohol, stopping smoking, getting treatment for sleep apnoea, and keeping your blood pressure well controlled can all reduce symptoms. This is seen as a fourth pillar alongside the standard medicines.
Finally, atrial fibrillation is also the most common complication after heart surgery. If you are about to undergo a heart procedure, ask your doctor in advance about preventing and treating this risk.
All claims come from studies in people followed for years and from many studies combined (covering roughly 9.7 million participants). The associations reflect links between factors and are not formally proven to be cause and effect, but the size and consistency of the evidence are substantial. The evidence for blood thinners is based on guideline literature and studies in people. The lifestyle evidence is more limited. The finding about foot amputation in people with both diabetes and atrial fibrillation comes from one study and requires confirmation.
How dangerous is belly fat?
Belly fat clearly raises the risk of heart disease, bowel cancer, and mental decline, independently of your weight. Measuring your waist circumference gives you a more concrete picture of that risk than the bathroom scales.
Is loud snoring dangerous for my health?
Loud snoring is linked to serious health risks: hardening of the arteries, a higher chance of dying after a heart attack, and dangerous daytime sleepiness. If you snore loudly on a regular basis and feel tired during the day, get it checked by your GP.
How harmful is prolonged stress really for my heart?
Prolonged stress measurably increases your risk of heart and vascular disease, particularly through work-related stress (10–40% extra risk in large population studies). The effect is real, but smaller than that of smoking or high blood pressure.
What is a healthy cholesterol level and when should I be concerned?
A normal LDL value does not give a complete picture of your cardiovascular risk. Ask your doctor about your remnant cholesterol as well, especially if cardiovascular disease or Alzheimer's disease runs in your family.
Is high blood pressure at night more dangerous than during the day?
High blood pressure at night is more dangerous than high blood pressure during the day. Have a 24-hour measurement taken if you are uncertain about your night-time values, and discuss with your doctor whether your treatment should be adjusted accordingly.
Is taking a daily aspirin smart or dangerous?
Whether a daily aspirin is smart or dangerous depends entirely on your age and medical profile. Take aspirin only on a doctor's advice, and never stop or start it on your own.