The editor of the San Francisco Chronicle magazine invited me to write about what restaurants could do to make it easier for customers to make more healthful choices. Here's what I said:

As a nutritionist who cares deeply about the effects of food on health, I am often asked to speak to groups of owners of restaurants and restaurant chains. I accept such invitations whenever I can because I have an agenda for restaurant owners. I want them to make it much easier for customers to make healthier food choices.

Yes, I know. Restaurants are in the business of selling food. Restaurants must offer choices and give customers what they want. But restaurants bear some responsibility for encouraging people to eat too much and, therefore, contributing to obesity and its consequences.

As someone who loves to eat and eats in restaurants several times a week, I am all too aware of efforts to get me to eat more than I ordinarily would. Rather than resisting those efforts on my own, I'd appreciate some help.

Here's what I wish restaurants would do:

Give a price break for smaller portions. Larger portions are a huge barrier to healthful eating. Larger portions have more calories, of course. But they also encourage people to eat more, and they fool us into thinking that we aren't eating so much. Controlling weight means eating smaller portions. I'd like restaurants to offer half-size servings for, say, 70% of the price of "normal" size. That would work better for me than taking home a doggie bag.

Make healthy kids' meals the default. Why not put tasty and healthful meals on the menu as the only options for kids' meals? If parents want their kids to eat junk food, they can always order it, but restaurateurs do not need to aid and abet that choice. Kids should be eating grownup food anyway--restaurant meals offer a chance to expand their food experience.

Cook with less salt. Put salt shakers on the table. If customers don't think your food is salty enough, they can always add their own. But those of us who are trying to keep our blood pressure under control would appreciate food that did not already have so much added salt.

Notice that I'm not asking restaurants (other than fast food chains) to post calories or nutrition information, to label meals as heart-healthy or to do anything else to turn customers off. I'd be happy with just these three changes. Other suggestions, anyone?