1. Induced respiratory diseases Second-hand smoke contains tar, nicotine, suspended particles and other harmful substances and carcinogens. People often smoke secondhand smoke. These harmful substances enter the airway, stimulate airway mucosa, and often induce respiratory diseases, such as bronchitis, pneumonia, lung cancer and so on. 2. Induced cancer Second-hand smoke contains dozens of carcinogens. Long-term secondhand smoke, repeatedly stimulated by these carcinogens, may induce cancer. Generally, people who smoke secondhand smoke for a long time are much more likely to suffer from malignant diseases such as lung cancer, breast cancer, cervical cancer, bladder cancer and leukemia than others.

3. Induced coronary heart disease often passive smoking, blood lipids will be abnormal, blood viscosity will increase, and myocardial tissue will often be destroyed, so the risk of coronary heart disease will greatly increase.

Second, discourage relatives from quitting smoking. I think the most effective way is to change the elders' own cognition.

1. Cognitive therapy can be used. Cognitive therapy is a psychotherapy method that changes patients' bad cognition through cognitive and behavioral techniques according to the theoretical hypothesis that cognitive processes affect emotions and behaviors. We can show our elders pictures of smokers' lungs compared with those of normal people, articles about the harm of smoking, and even some examples of diseases caused by smoking, so that elders can realize the horror of smoking and the harm of smoking to themselves and others.

At the same time, you can show your elders the benefits of quitting smoking and make them more motivated to quit smoking, such as

(1) Just one day after quitting smoking, the benefits of quitting smoking on the heart, blood pressure and blood system appeared. After quitting smoking 1 year, the excess risk of coronary heart disease is reduced by half compared with that of continuous smokers.

(2) After quitting smoking for 5 years-15 years, the risk of stroke dropped to the level of never smokers. There are also 10 and 15 benefits of quitting smoking and so on. You can show it to your elders.

2. Secondly, systematic desensitization therapy can be used. This method is to let the elders gradually reduce their smoking behavior and finally achieve the goal of quitting smoking. If this method is adopted, we should also pay attention to helping our elders build up confidence in quitting smoking. But I believe that in the process of quitting smoking, elders will have anxiety or avoidance behavior, so it is very important to ask elders not to avoid it. At the same time, after each small stage is successful, we should communicate with our elders more and praise them more. Elders also need encouragement!

3. We can also let our elders try using melon seeds, chewing gum, fruits, etc. Instead of smoking, there are smoking cessation recipes. Family members can search for such recipes and give them to their elders who smoke, and one will also have a good effect.