The old man is addicted to health lectures, so we can analyze his emphasis on health. As children, we should take them to regular hospitals for health check-ups. Let him know his physical condition, let the doctor tell them that they are in good health, or give correct advice.
Now there is a common problem in society, that is, people will easily believe those health care products and some strange things before they come into contact with a formal or correct answer. We must let the elderly at home have a correct health awareness. Those lectures are all about promoting those health care products, giving them free blood pressure tests, giving them small gifts on the pretence, and so on. We have to tell them. We should use our patience and care to change the old people's minds bit by bit. It doesn't happen overnight, just as we learn knowledge from childhood, there is a process.
They are addicted to these lectures, which also shows that they don't have much spare time and hobbies. Old people at home are usually retired to take care of our daily life, or stay at home alone. We usually go to work and want to relax when we have a rest, while the old people are bored all day, doing nothing and having no hobbies.
Solution:
Cultivate some healthy hobbies for the elderly at home and let them spend all their time on those healthy hobbies. Because they are their parents, they have hobbies or some wishes that were not completed or realized when they were young. At this time, they are boldly encouraged to pursue what they like. Once people have their own hobbies, they will be addicted to them and have no time to listen to those health lectures. This problem will be solved naturally.
Most importantly, as a junior, you must know the original intention of your parents. They may be worried about our health. Our parents are old, so we should always care about their health and ensure our own health.