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Metabolic & Cardiometabolic

Does tailoring your diet with a glucose monitor improve blood sugar?

The claim, precisely: personalized CGM-guided diet improves glycemic control

Strong support Metabolic & Cardiometabolic
RefutedContestedStrong support
consensus score 1.00

Yes — personalizing diet by your own glucose responses improves control, confirmed in independent trials.

Evidence ladder

How far up the ladder this claim has climbed. A high consensus on a low rung means "consistent so far," not "proven in people."

Top evidence so far: All trials, pooled (Meta-analysis)

MechanismIn-vitroAnimalObservationalRCTMeta-analysis

How the studies fall

3 support 0 contradict 0 tested null 0 mixed · 3 sources, 3 independent groups

What the evidence shows

Acting on personalized postprandial predictions (or CGM feedback) improves glycemic control / time-in-range in RCTs — validating the whole measure->tailor->re-measure loop our protocol imitates. Independent (non-commercial) CGM-feedback trials corroborate.

The evidence (3)

SourceGradeStanceQualityFinding
Bannuru
2025 · J Diabetes Sci Technol
meta-analysis supports moderate Meta (21 RCTs, 2734 adults): CGM-guided nutrition cut HbA1c -0.46%, raised time-in-range +7.2%
Ben-Yacov O, et al. (Segal)
2021 · Diabetes Care
RCT supports moderate RCT n=225 prediabetes: personalized-postprandial diet beat Mediterranean on CGM time-in-range
Willis HJ, et al. (UNITE)
2026 · (RCT)
RCT supports moderate UNITE RCT: nutrition-focused CGM use improved time-in-range in T2D (independent of ZOE/DayTwo)

Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.