Weighing the evidence for a body mass-regulating gravitostat [Biological Sciences]

The intriguing paper by Jansson et al. (1) reports the identification of a body mass-regulating homeostat that operates in rodents independently of leptin. In response to implantation of capsules weighing 15% of body weight the authors observed that ∼80% of this load was offset by a reduction in biological body...

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