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Vitamin D deficiency linked higher diabetes risk

Gorkha Post

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KATHMANDU — People with vitamin D deficiency might have a greater risk of developing diabetes, researchers at the University of California San Diego School of Medicine and Seoul National University said in a new study report.

For the study published in PLOS One, researchers studied 903 healthy adults without pre-diabetes or diabetes during clinic visits from 1997 to 1999, and followed up with them for 10 years, to study their levels of 25-hydroxyvitamin and their medical condition.

Among the study participants, who had a mean age of 74, researchers found 47 new cases of diabetes and 337 new cases of pre-diabetes.

“Further research is needed on whether high 25-hydroxyvitamin D levels might prevent type 2 diabetes or the transition from pre-diabetes to diabetes,” study co-author Dr. Cedric F Garland, adjunct professor in the UC San Diego School of Medicine Department of Family Medicine and Public Health, said in a press release.

“But this paper and past research indicate there is a strong association,” he said.

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The 25-hydroxyvitamin D, which is known as the ‘sunshine’ vitamin because it’s produced in your skin in response to sunlight, also can be received through certain foods and supplements. The vitamin helps in growth and development of bones and teeth, and resistance against certain diseases.

The minimum healthy level of 25-hydroxyvitamin D in blood plasma was listed as 30 nanograms per milliliter, which is 10 ng/ml above the level recommended in 2010 by the Institute of Medicine, now part of The National Academies.

“We found that participants with blood levels of 25-hydroxyvitamin D that were above 30 ng/ml had one-third of the risk of diabetes and those with levels above 50 ng/ml had one-fifth of the risk of developing diabetes,” first author Dr. Sue K. Park, of the Department of Preventive Medicine at Seoul National University College of Medicine in South Korea, said.

Those below 30 ng/ml were considered vitamin D deficient and up to five times at greater risk for developing diabetes than those above 50 ng/ml.

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To reach the D levels of 30 ng/ml, Garland said it would require dietary supplements of 3,000 to 5,000 international units per day, but less with moderate daily sun exposure.

The recommended average daily amount of vitamin D is 400 IU for children up to 1 year, 600 IU for ages 1 to 70 years and 800 IU for persons over 70, according to the National Institutes of Health.

Good food sources for vitamin D include egg yolk, shrimp,salmon, sardines, fortified milk, cereal, yogurt and orange juice.

With Agency Inputs

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Type 2 diabetics can reduce cardiovascular disease risk

Raghu Kshitiz

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With proper treatment and not smoking, individuals with type 2 diabetes can significantly reduce their risk of cardiovascular disease, according to a new study in Sweden.

Individuals with type 2 diabetes have 10 times the risk for heart attack, heart failure and stroke, and five times the risk for premature death compared with the control group.

In a study published in The New England Journal of Medicine, researchers at University of Gothenburg in Sweden said that the increased risks could be theoretically eliminated.

“The study shows that patients with type 2 diabetes with all risk factors within therapeutic target range had an extremely low risk of premature death, heart attack and stroke. This is definitely good news,” author Aidin Rawshani, a doctoral student at the Institute of Medicine, Sahlgrenska Academy, said in a press release.

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For the study, researchers analyzed data on 271,174 patients with type 2 diabetes registered in the Swedish National Diabetes Register from 1998-2014 and matched with 1.35 million controls on the basis of age, sex and county. In a median followup of 5.7 years, there were 175,345 deaths.

Risk factors that can be controlled by medication, and cigarette abstinence, are blood pressure, long-term blood glucose, lipid status, renal function and smoking, according to the researchers.

Smoking was the most important risk factor for premature death and an elevated blood glucose level was the most dangerous factor for heart attack and stroke.

“By optimizing these five risk factors, all of which can be influenced, you can come a long way,” Rawshani said adding, “We have shown that the risks can be greatly reduced, and in some cases may even be eliminated.”

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In some cases, patients with type 2 diabetes have no more than a 10 percent elevated risk of premature death, heart attack and stroke compared with the general population. The risk for heart failure is 45 percent higher among those with type 2 diabetes in those instances.

In addition, the risk of complications, especially heart failure, is greatest among those under 55 years.

“This makes it extra important to check and treat risk factors if you are younger with type 2 diabetes.” Rawshani added.

With Agency Inputs

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