Study shows that sun exposure impacts weight loss surgery results

Seasonal sun exposure — a key factor in the body’s natural ability to make vitamin D — plays a substantial role in how well people do after weight loss surgery, new research has found.

Results of the study reveal interplay among vitamin D status, seasons, geography and surgery outcomes, said lead researcher Leigh Peterson from Johns Hopkins University in Baltimore, Maryland, U.S.

Specifically, the researchers found that patients undergoing bariatric surgery in the U.S. during winter — January to March, the time of lowest vitamin D levels — fared worse than patients who had procedures in the summer.

Similarly, patients having surgery in the north seemed to have more complications than those in the south.

“Sun exposure is critical in the synthesis of vitamin D, so the notion that people living in less sunny northern states may suffer from vitamin D deficiency is not surprising,” Mr. Peterson noted.

“What is remarkable is how closely sun exposure, vitamin D and surgical outcomes were linked,” Mr. Peterson said. — IANS