Hormonal
BMAL1 is a necessary transcription factor for adipogenesis; its absence prevents lipid accumulation and expression of key adipocyte genes (PPARγ2, aP2), while its restoration or overexpression promotes lipogenesis and lipid synthesis.
This research highlights that your body's internal clock (circadian rhythm) and genetic factors play a crucial role in how fat cells develop and store energy. While you cannot change your genes, maintaining a regular sleep schedule and avoiding late-night eating might support healthy fat metabolism by aligning with your body's natural BMAL1 rhythms.
BMAL1 knockout mice embryonic fibroblast cells failed to be differentiated into adipocytes. Importantly, adding BMAL1 back by adenovirus gene transfer restored the ability of BMAL1 knockout mice embryonic fibroblast cells to differentiate.
Why this rating
Strong in vitro and mouse model evidence with clear mechanistic pathways, but lacks human clinical trials.
Source
Brain and muscle Arnt-like protein-1 (BMAL1), a component of the molecular clock, regulates adipogenesis
Shigeki Shimba et al. · Proceedings of the National Academy of Sciences · 2005
DOI 10.1073/pnas.0502383102
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