Weight Loss Plateau

Weight Loss Plateau

A plateau is close to universal: between 80 and 95 percent of dieters encounter one within six to twelve months, typically after an initial period of rapid loss. It is a predictable physiological response rather than a lapse of discipline. Reduced body mass lowers total energy expenditure, adaptive thermogenesis lowers it further than mass alone accounts for, appetite hormones shift toward hunger, and unconscious non-exercise movement declines. Two ingredients are graded against this condition here, both at Grade C, on 13 studies and 700 participants.

Caffeine holds Grade C on 8 studies and 400 participants, and green tea extract standardized for EGCG the same grade on 5 studies and 300 participants. Both are thermogenic agents, and both are graded higher against other endpoints on this site, caffeine reaching Grade A for exercise performance and for fat oxidation. The lower grade here reflects the endpoint rather than the compound: sustaining loss after adaptation has set in is a harder outcome to demonstrate than a short-term change in energy expenditure.

Adaptive thermogenesis is the central mechanism and the reason thermogenic supplementation has limited leverage against it. Measured energy expenditure after substantial weight loss commonly falls below the value predicted for the new body mass, and the deficit persists well beyond the period of active loss. A compound that raises expenditure by a small percentage is acting against a larger opposing adjustment, and tolerance to the stimulant component develops over weeks of continued use.