Your mother likes to buy a lot of groceries. It may be her consumption habit. Generally speaking, there may be discounts for buying a lot at one time. Elderly people are actually very economical in spending money. She may want to To save some money, she didn’t consider that if she bought too much and couldn’t finish it, it would spoil, and then she would get tired of eating and not want to eat anymore. This is not a disease, but just a consumption habit of hers.

If you want to change her consumption habit, you can slowly communicate with her and ask her to buy less in the future. Although there are discounts for buying more, you can’t finish it if you buy too much. Throwing it away will also be a waste. If you communicate with her slowly, maybe she will understand and be willing to listen to you.

Of course, if she still does that and doesn't listen to you, just tell your mother not to buy groceries in the future. When you buy groceries, you can decide how much or how little you want. Your mother can do it too. Have less things to do, so you won't be used to your mother's spending habits anymore.