Circumferential Measurements are Essentially Unreliable.
One look at the inaccurate and misleading claims related to the use of Zerona, the too-good-to-be-true fat busting device, and other claims with related devices, led a team of investigators to develop and utilize a mathematic geometric model that can reliably be used by clinicians and device engineers alike. Hailed by Mat Avram and others as one of the most significant presentations at the annual ASLMS meeting in Phoenix, the authors studied a faux fat model with circumference, ultrasound and micrometer measurements to understand these issues better. Mathematically, if the fat is reduced by ‘X’ mm, then the circumference reduction will be 2.1 times ‘X’. Thus a device that reduces abdominal fat by 0.5 cm will cause a predicted abdominal circumference reduction of just over 1cm. The claims of 4 independent studies of these types of devices, published in reputable journals, were, in 3 out of 4 cases, found to be mathematically impossible and exaggerated the maximum possible average girth reduction by a factor of 5 times.
It’s impossible for a potential client, be they a prospective patient or purchaser of these devices, to make a serious and clear decision about the ‘right’ device, when these studies, vetted and stamped with the approval of the Journal editors and reviewers, are so clearly full of nonsense. Dr Christopher Zachary, Professor and Chair of UC Irvine’s department of dermatology, together with John Allison PhD and Nazanin Saedi MD, made this presentation to the Dermatology/Plastic section of the American Society for Laser Medicine and Surgery’s annual meeting in Phoenix.
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