This study evaluated the SWW Method®, a 12-week dietary and lifestyle intervention based on the carbohydrate-insulin model, in a healthy cohort of women aged 35-75. The study assessed whether the intervention resulted in significant improvements in blood glucose markers (HbA1c, fasting blood glucose), weight, BMI, and other metabolic markers compared to a no-intervention control group. The SWW Method® protocol includes intermittent fasting, a protein-forward diet, meal sequencing, hydration, magnesium supplementation, and sleep support. This was a non-randomized case-control trial with 45 intervention participants and 40 controls, conducted over 12 weeks.

The SWW Method® study is a non-randomized case-control trial in which participants self-selected into either the SWW Method® intervention group (cases) or a no-intervention control group through separate recruitment channels. Primary, secondary, and exploratory outcome measures were compared between the two groups.

This 12-week trial was designed to evaluate the SWW Method®'s effect on blood sugar balance and weight loss in a moderately healthy population of women aged 35-75. Cases completed the six-week SWW Method® program, followed by six weeks of coach-supported accountability via the ATE™ app. Questionnaires and lab work were collected one week before and six weeks after the intervention to assess changes over the 12-week period.

The SWW Method® is an isocaloric carbohydrate-insulin model (CIM)-based protocol designed to support blood sugar balance and weight loss through: adequate hydration, alkalizing with a daily greens powder, intermittent fasting, conscious meal timing, a protein-forward diet, non-starchy vegetables with every meal, limiting starchy carbohydrate intake to once per day, magnesium supplementation, and optimizing circadian rhythm. The protocol is delivered through nutrition education, group coaching, and one-on-one nutrition support.

Participants completed a Comprehensive Health Profile through Quest Diagnostics at baseline and 12 weeks, including a complete blood count (CBC), comprehensive metabolic panel (CMP), lipid/cholesterol panel, urinalysis, hemoglobin A1c (HbA1c), vitamin D, and high-sensitivity C-reactive protein (hsCRP), as well as biometrics including height, weight, waist circumference, and blood pressure.

The primary outcome was change in HbA1c / fasting blood glucose and weight / BMI between baseline and 12 weeks. Secondary outcomes included changes in lipid markers, blood pressure, C-reactive protein, and other lab and biometric measures. Statistical analysis was performed using the Wilcoxon signed-rank test for within-group comparisons and difference-in-differences regression for between-group comparisons.

Inclusion Criteria:

• Female
• 35-75 years of age
• No prior enrollment in the SWW Method® or Sarah Wragge Wellness® program.

Exclusion Criteria:

• History of non-skin-related cancer diagnosis or treatment within the past five years.
• Currently taking weight loss medication, including semaglutide
• Currently taking any medication for blood sugar or diabetes management.
• Previous enrollment in the SWW Method® or any Sarah Wragge Wellness® program.

Female only. The study was designed to evaluate the SWW Method® dietary and lifestyle intervention specifically in women aged 35-75, as the program is designed for and marketed to a female population.

Individual participant data will not be shared publicly due to privacy and ethical restrictions. The data supporting the findings of this study are available from the corresponding author upon reasonable request.