Fasting can be an effective tool for weight loss. However if used inappropriately, can result in some not good situations. The patient's situation in this case isn't quite like the intermittent fasting schedules that are popular today. Chubbyemu video: https://youtu.be/nQC_GDTNkQQ Heme Review commentary: https://youtu.be/tWlvWYGztYk Music by Lifeformed Tweet me: https://twitter.com/hemereview IG me: https://instagram.com/hemereview References: Mechanism of hypokalemia in magnesium deficiency. Huang CL, Kuo E. J Am Soc Nephrol. 2007;18:2649–2652. https://pubmed.ncbi.nlm.nih.gov/17804670/ Hypophosphatemia and Rhabdomyolysis https://www.ncbi.nlm.nih.gov/pmc/articles/PMC371889/ A Case of Hemodynamically Unstable Sick Sinus Syndrome Secondary to Refeeding Syndrome https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8148626 Review of the Refeeding Syndrome. January 2006 Nutrition in Clinical Practice 20(6):625-33.  EMCrit Refeeding Syndrome https://emcrit.org/ibcc/refeeding/ Refeeding syndrome: what it is, and how to prevent and treat it. BMJ. 2008 Jun 28; 336(7659): 1495–1498. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2440847/