What is yo-yo effect?
Weight cycling or yo-yo effect, i.e. repeated phases of loss and weight gain, appears related to excess weight and accumulation of fat in the abdomen.
Yo-yo effect and health
Several studies suggest a link with increased blood pressure, increased blood cholesterol, with gallbladder disease, with a significant increase in binge eating disorder, in women with greater easy to weight gain than those who are not subject to weight cycling. In this regard there should be emphasized that the weight cycling occurs over years, during which, aging, the rate of metabolism inevitably tends to decrease: this could make more difficult the subsequent losses.
Finally, weight cycling was also associated with a sense of depression with regard to weight.
Cereda E., Malavazos A.E., Caccialanza R., Rondanelli M., Fatati G. and Barichella M. Weight cycling is associated with body weight excess and abdominal fat accumulation: a cross-sectional study. Clin Nutr 2011;30(6):718-23 [Abstract]
Sachiko T. St. Jeor S.T. St., Howard B.V., Prewitt T.E., Bovee V., Bazzarre T., Eckel T.H., for the AHA Nutrition Committee. Dietary Protein and Weight Reduction. A Statement for Healthcare Professionals From the Nutrition Committee of the Council on Nutrition, Physical Activity, and Metabolism of the American Heart Association. Circulation 2001;104:1869-74 [Abstract] [PDF]