People who yo-yo diet are up to six times more likely to have low levels of muscle mass that those whose weights remain more constant.
in a study showing lose-gain-lose bouts are tough on cardiovascular health, but now Italian researchers find they can affect muscle health as well.researchers looked at 60 men and 147 women, all classified as obese with an average body mass index of 38, and a mean age of 52. They were categorized into three groups: non-weight cyclers, mild weight cyclers, and severe weight cyclers who had more than five weight cycles during their lives.
Those in the severe group had nearly 4 times the increased risk of low muscle mass compared to the non-weight cycles using the scan data and 6 times more risk when considering handgrip strength.Why would weight loss and regain be such a muscle zapper? It’s likely because of how the body puts that weight back on, according to said lead researcher Andrea Rossi, M.D., Ph.D., of the Healthy Aging Center at the University of Verona.
“The yo-yo effect is associated with an increase in fat mass, which is why it has unfavorable effects on heart health,” Rossi said. “But the main message with our research is that it is also a risk for loss of muscle, with important consequences on your level of autonomy.”
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