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June 11, 2026 07:00 ET | Source: Medifast

What Science-Backed Subscription Health Programs Measure Differently

OPTAVIA's RCT used DXA scanning and a 92.3% completion rate to document 98% lean mass retained in 198 participants across 16 weeks.
May 21, 2026 07:00 ET | Source: Medifast

Weight Loss Coaching vs. App-Only Programs: What Published Research Shows About Long-Term Outcomes

OPTAVIA, backed by 18 RCTs, shows coach-guided weight loss delivers up to 10x more weight loss and 17x more fat loss than app-only programs.