Passive smoke, also known as ambient smoke or second-hand smoke, is smoke from a smoker that is inhaled by non-smokers. It contains many toxic substances that can be harmful to health. People with chronic diseases are particularly vulnerable to the effects of secondhand smoke. Here's why.

   Passive smoke and cardiovascular disease

  People with chronic cardiovascular disease are at particular risk because secondhand smoke can increase the risk of heart attack and stroke. Chemicals in tobacco smoke, such as nicotine and carbon monoxide, can lead to blood vessel damage, high blood pressure and other heart problems.

   Secondhand smoke and lung disease

  People with chronic lung diseases, such as asthma or chronic obstructive pulmonary disease (COPD), are particularly vulnerable to secondhand smoke. Inhaling tobacco smoke can worsen the symptoms of these diseases, increase the frequency and severity of attacks of shortness of breath, and accelerate disease progression.

   Passive smoke and diabetes

  For people with diabetes, secondhand smoke can increase the risk of complications associated with the disease, such as heart disease, stroke and kidney damage. Although the mechanism is not yet fully understood, research suggests that secondhand smoke may affect blood glucose control.

   Secondhand smoke and immune diseases

  Secondhand smoke can also harm people with immune diseases. Substances in tobacco smoke can affect the immune system, leading to an increased risk of infection, slower wound healing and other health problems.

   Seeking solutions

  People with chronic diseases should avoid rooms where cigarettes are smoked to minimize their risk of exposure to tobacco smoke. This is especially important for people with heart disease, lung disease, diabetes and immune diseases.

  Laws and policies can also help. Authorities can enact smoking bans in public places, and employers can create smoke-free work environments to protect employees' health.

  For a person with chronic diseases who lives with a smoker, a conversation about the dangers of secondhand smoke can encourage the smoker to change his or her habits. Professional advice and support can also help in this process.

   Summary

Secondhand smoke poses a serious risk to people with chronic diseases, increasing their risk of serious complications and worsening their overall health. Avoiding exposure to tobacco smoke, taking steps to reduce exposure in the home and workplace, and educating others about the harms of tobacco smoke are key to protecting their health.