You can call the seller with the health care products that the elderly want to buy, ask them why these health care products are ineffective or even have side effects, or threaten them to call the police 1. This can make the old people see the hypocrisy and panic of the seller, and also make them realize that they may have been cheated.

You can let the old people watch a TV series "A sense of security for the old", which specifically exposes the "sunset industry" derived from the mentality of the old people who are afraid of death and advocate health preservation, and specifically exposes the deception, insider and process. This will enable the elderly to rationally accept the ineffectiveness and harmfulness of health care products, and also let the elderly realize themselves.

You can check the approval number and logo of health care products. If it is a regular health food, there should be a health food approval number and logo. Without these, or expired, or false, it can be said that these health care products are deceptive.

You can communicate with the elderly more, accompany them more, care more, let them feel the love and warmth of their families, and reduce their loneliness and emptiness. This can make the elderly no longer rely on health care products to meet their psychological needs, and also make them trust the opinions of their families more.