1. Advertising: Many health products will be promoted through advertisements and TV programs. These publicity methods often exaggerate the efficacy of products, and make the elderly mistakenly think that they can achieve the ideal effect by purchasing these products.

2. The influence of social circle: Old people often listen to the suggestions and experience sharing of friends and relatives in social circle. If people around you have a good evaluation of a health care product, it is easy to follow suit.

3. Personal physical condition: With the growth of age, the elderly face various health problems, such as joint pain, insomnia, and memory loss. Some health products usually advertise that they can alleviate or cure these symptoms, and these promises attract the attention of the elderly.

4. distrust of the medical system: some elderly people may have doubts about the traditional medical system and think that drug treatment will have side effects, while health care products are natural and harmless choices.

In short, the reasons why the elderly buy health care products are complicated, and we need to treat them with a rational attitude. If it is found that the elderly have bought unnecessary or ineffective health care products, they can try to communicate with them, provide more scientific and authoritative information, help them make reasonable diet and exercise plans, and reduce their dependence on health care products.