First, the elderly don't know much. However, for young people, health care products are no less than IQ tax. Because the vitamins in health care products are easily ingested through vegetables or fruits, and the intake content is much higher than that of health care products, and the price is also cheaper than that of health care products. However, old people don't know all this knowledge as young people do. They can only know the quality of health care products by their own judgment, so many health care products are bought by old people only by the efficacy of health care products.
Second, most elderly people have no children to accompany them and trust health care products, which is also related to not getting along with their children at ordinary times. Nowadays, many young people choose to work in big cities or far away from home in order to get better jobs, so they only go home to visit the elderly on holidays. When these old people spend less time with them, they will want to make themselves better, so they will choose to buy health care products to enhance their body resistance.
Third, it is easy to be promoted by advertisements. Finally, not all elderly people will buy health care products, but some rational elderly people do not take health care products as the only source of nutrition intake. However, the profit of health care products is very high, and manufacturers are willing to spend a lot of money to promote them. Therefore, the publicity effect of health care products on the market is much higher than their nutritional value, so some elderly people in unknown so will be fooled into buying health care products.