RE: Eli Lilly Foundayo24 May 2026 19:31
INDIANAPOLIS, May 22, 2026 – Eli Lilly and Company (NYSE: LLY) announced a new analysis from the Phase 3 ATTAIN-1 and ATTAIN-2 trials showing that Foundayo (orforglipron), was associated with clinically significant body weight reductions in adults aged 65 and older with obesity or overweight, with or without type 2 diabetes. Foundayo is the only approved GLP-1 pill that can be taken any time of day without food or water restrictions. The post-hoc analysis was recently presented at ECO 2026 in Istanbul, Turkey.1
Key results: Weight loss in adults 65 and older
Foundayo at all doses tested was associated with statistically significant reductions in body weight compared with placebo at 72 weeks in adults ≥65, in both trials using the efficacy estimand (all p<0.001).2
ATTAIN-1 (participants with obesity or overweight and without T2D): At the highest dose, mean body weight reduction reached 13% in the observed data for adults 65 and older. Participants ≥65 years were associated with mean body weight reductions of -7.9% (5.5 mg), -11.3% (9 mg), and -13.0% (17.2 mg) vs. -1.6% with placebo. Comparable mean body weight reductions of -7.7% (5.5 mg), -9.2% (9 mg), and -12.4% (17.2 mg) were observed in adults <65 vs. -0.8% placebo.
ATTAIN-2 (participants with obesity or overweight and T2D): Participants ≥65 years were associated with mean body weight reductions of -7.5% (5.5 mg), -8.3% (9 mg), and -12.2% (17.2 mg) vs. -2.3% placebo. Comparable mean body weight reductions of -5.0% (5.5 mg), -7.6% (9 mg), and -9.9% (17.2 mg) were observed in adults <65 vs. -2.2% placebo.
Expert perspective: What the results could mean for patients
“Weight management in older adults requires careful consideration of both benefit and risk. These data are reassuring on both fronts —up to 13% weight loss was observed in patients 65 and older taking Foundayo, with a safety profile similar to what was observed in the broader trial populations,” said Rachel Batterham, M.D., senior vice president of medical innovation and external engagement, Lilly Cardiometabolic Health. “The fact that these results were achieved with a once-daily pill that patients can take at any time, without planning around meals or dealing with injections, matters in this age group.”
Key results: Safety profile across age groups
The safety profile of orforglipron was generally consistent across age groups and aligned with the overall ATTAIN-1 and ATTAIN-2 populations. Gastrointestinal adverse events, sometimes severe, including nausea, constipation, diarrhea, and vomiting were the most frequently reported events, consistent with the GLP-1 receptor agonist class.
Pooled serious adverse events (SAEs) were reported by 5.6%, 6.2%, and 5.4% of participants <65 years of age and 9.9%, 13.0%, and 11.6% of participants ≥65 years of age in the orforglipron 5.5 mg, 9 mg, and 17.2 mg groups, respectively, vs. 5.4% and 11.4% in the placebo group.