A nutritionist took [Tamara Naar] shopping and introduced her to the joys of cauliflower. She upped her workouts, stopped eating hamburgers three times a week and scaled back on the Cold Stone pistachio ice cream. Today, Naar is 20 pounds lighter and down to two pills a day. Even she is shocked by how simply changing her eating changed her life.

—“Healthy Eating: Small Changes Can Equal Big Results,”
Jenny Staletovich

Describe how the author develops her argument in this part of the article.