Q: I’m having some memory problems, and my doctor said to eat more salads. What does that have to do with anything? — Pat R., ...

In some situations, they can be helpful. In others, they can lead to dangerous nutrient deficiencies or imbalances. Experts weigh in on how to make an informed decision.

In another 2017 study, researchers found that women with the highest intakes of vitamin D and calcium had a 17% lower risk of early menopause. Cheese and fortified milk are rich in these nutrients.