The participants found it easiest to incorporate single...

The participants found it easiest to incorporate single items such as the almonds and margarine into their daily lives. The fiber and vegetable protein were more challenging since they require more planning and preparation and because these types of niche products are less available. It's just easier, for example, to buy a beef burger instead of one made from soy, although the range of options is improving. We considered it ideal if the participants were able to follow the diet three-quarters of the time.