Health Benefits of a 16-Week Whole Food, High Fiber, Plant Predominant Diet among U.S. Employees.

PURPOSE: To assess improvements in eating behaviors and health measures among adults participating in a whole food plant predominant diet, Full Plate Living (FPL) program. DESIGN: Retrospective, post hoc analysis of self-reported 16-week pre-post participant data obtained over a 3 year program period (2017-19). SETTING: Wellness offering for employees in Southwest U.S. SUBJECTS: Of 6,820 enrollees, 4,477 completed the program, further segmented by generational cohorts. INTERVENTION: FPL program materials and weekly online video lessons. MEASURES: Baseline and follow-up measures included eating behaviors, self-perceived health status and energy, body weight, and confidence in healthy eating and weight loss. ANALYSIS: Paired t-tests were used to examine changes in eating behaviors and health measures. Mixed-effects models were used to examine whether changes among generational cohorts differed. RESULTS: Significant pre-post improvements were demonstrated for all measures, including servings of fruits (1.54 to 2.34), vegetables (2.05 to 2.87), beans (.63 to .99), and weight loss (3.5) (P < .001). Self-perceived health and energy values, and confidence in making healthy food choices and losing weight improved (P < .001). Improvements were observed across generational cohorts (P < .001). CONCLUSION: The FPL healthy eating approach has a beneficial impact on health measures across generational cohorts, and may be an effective addition to lifestyle medicine and corporate wellness offerings. Longer-term program evaluation is warranted.

Increased dietary fiber is associated with weight loss among Full Plate Living program participants.

Introduction: Prior studies have demonstrated that an intake of foods rich in dietary fiber is associated with a favorable impact on health status and body weight. However, the association between fiber intake and weight loss has not been well-studied in employer settings. This research aimed to assess the relationship between dietary fiber and weight loss among individuals participating in the Full Plate Living (FPL) program. Methods: The 16-week plant-predominant fiber-rich eating program was delivered to 72 employers, primarily in the Southwest U.S., over 3 years (2017-2019). Participants received weekly video lessons, FPL materials, and additional online resources. A retrospective analysis of repeated measures was conducted using participant data obtained from 4,477 participants, of which 2,792 (62.5%) reduced body weight. Analysis of variance with post hoc analysis was used to assess the statistical significance of the changes between baseline and follow-up measures of dietary fiber intake in each of the food categories, specifically the relationship between changes in individual and combined (composite) daily servings of fruits, vegetables, whole grains, beans, and nuts on body weight measures among three groups at follow-up: those who lost, maintained, or gained weight. Multilevel modeling was used to test the hypothesis that increased intake of fiber was associated with greater weight loss. Results: The mean weight loss for the weight loss group was 3.28 kg. As compared to the two other groups, the intake of whole fiber-rich foods at follow-up was significantly higher among the weight loss group with fruits (2.45 servings), vegetables (2.99 servings), beans (1.03 servings), and total fiber composites (9.07 servings; P < 0.001). A significant increase in servings of grains was also noted (P < 0.05). Multilevel modeling demonstrated that a higher total fiber composite (Model 1), as well as higher intakes of either vegetables or fruits (Model 2), resulted in greater weight loss. Discussion: Our findings indicate that the FPL program can be a part of a lifestyle medicine approach to healthy eating and weight loss. Delivering the program in clinical, community, and workplace settings can increase its reach as an effective and low-cost offering.