Activation and recruitment of brown adipose tissue as anti-obesity regimens in humans.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing mechanistic and clinical literature without systematic review methodology
PubMed 24901355 · doi:10.3109/07853890.2014.911595
What was done
This narrative review summarizes evidence on human brown adipose tissue (BAT) and beige/brite adipocytes. It outlines the mechanism of UCP1-dependent thermogenesis, radionuclide detection of active BAT in adults, and the effects of acute cold exposure, repeated cold exposure, endocrine signals, and dietary ingredients targeting transient receptor potential (TRP) channels on BAT recruitment and energy balance.
What was found
The abstract reports qualitative relationships without specific numerical data. Adult human BAT comprises mostly beige/brite adipocytes and activates during acute cold exposure, correlating positively with cold-induced increases in energy expenditure. BAT activity is inversely related to body fatness. Repeated cold exposure or daily ingestion of TRP-channel-activating food ingredients was associated with recruited BAT, increased energy expenditure, decreased body fat, and potential improvements in glucose tolerance.
Why it matters
It highlights BAT activation and beige adipocyte recruitment as potential physiological mechanisms to elevate metabolic rate and combat obesity and associated metabolic conditions.
Limits
As a narrative review, it lacks systematic search criteria, quality appraisal, and meta-analytic synthesis. The abstract reports no quantitative effect sizes, statistical bounds, participant numbers, or evidence regarding long-term clinical efficacy and safety.
Cited by
- supports Young healthy men who wore a cooling suit set to 50°F for 2 hours daily for 1 month experienced an almost 50% increase in brown adipose tissue.