Version 1
: Received: 28 February 2023 / Approved: 3 March 2023 / Online: 3 March 2023 (09:08:53 CET)
How to cite:
Purvis, A.; Ruddock, A.; Hembrough, D.; Ranchordas, M.; Claxton, D. Observation of a 10-day Therapeutic Fast of An Obese Female. Preprints2023, 2023030064. https://doi.org/10.20944/preprints202303.0064.v1
Purvis, A.; Ruddock, A.; Hembrough, D.; Ranchordas, M.; Claxton, D. Observation of a 10-day Therapeutic Fast of An Obese Female. Preprints 2023, 2023030064. https://doi.org/10.20944/preprints202303.0064.v1
Purvis, A.; Ruddock, A.; Hembrough, D.; Ranchordas, M.; Claxton, D. Observation of a 10-day Therapeutic Fast of An Obese Female. Preprints2023, 2023030064. https://doi.org/10.20944/preprints202303.0064.v1
APA Style
Purvis, A., Ruddock, A., Hembrough, D., Ranchordas, M., & Claxton, D. (2023). Observation of a 10-day Therapeutic Fast of An Obese Female. Preprints. https://doi.org/10.20944/preprints202303.0064.v1
Chicago/Turabian Style
Purvis, A., Mayur Ranchordas and David Claxton. 2023 "Observation of a 10-day Therapeutic Fast of An Obese Female" Preprints. https://doi.org/10.20944/preprints202303.0064.v1
Abstract
This case study features an observation of an obese female (body mass index ≥ 30 kgm-2) who undertook a 10-day water and electrolyte fast with the aim of reducing body fat and improving physiological markers of health. A comprehensive range of physiological measures (body mass, girths, blood pressure, body fluid balance, urine osmolarity, and resting oxygen consumption), mood indicators, metabolic markers (blood ketones, blood glucose, breath ketones, urine ketones), and measurement of intake and expenditure (fluid intake, food intake, nutritional macros, steps taken, and estimated movement caloric expenditure) were measured before, during and after the fasting period to determine the effectiveness of undertaking extended therapeutic fasting for improving markers of health and weight loss. Body mass on the first day of the fast was 95.1 kg and on the tenth and final day of the fast it was 88.1 kg representing a loss of 7 kg at a rate of 0.7 kg·day1. Mean body mass in the 15 days after the fast was 88.3 ± 0.4 kg. This case study is novel in reporting key physiological and psychological markers over a 10-day fast, and in pre- and post-fast periods. A 10-day fast appears to be a safe and effective method of weight loss, mood is positively affected by fasting and weight loss from fasting can be sustained providing care is taken in the approach to post-fasting nutrition.
Keywords
Fasting; weight loss; obese; ketones.
Subject
Biology and Life Sciences, Anatomy and Physiology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
