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.
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.
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
Suicide can’t be predicted by asking about suicidal thoughts : Study
Most people who died of suicide deny they experience suicidal thoughts when asked by doctors in the weeks and months leading up to their death, a major Australian study has found.
The findings, co-authored by clinical psychiatrist and Professor Matthew Large from UNSW’s School of Psychiatry, Sydney that published in the journal BJPsych Open The meta-analysis challenge the widely-held assumption that psychiatrists can predict who will suicide by asking if they are preoccupied with thoughts of killing themselves.
The study showed that 80% of patients who were not undergoing psychiatric treatment and who died of suicide reported not to have suicidal thoughts when asked by their psychiatrist or GP.
“If you meet someone who has suicidal ideation there is a 98 per cent chance that they are not going to suicide,” said Professor Large, an international expert on suicide risk assessment who also works in the emergency department of a major Sydney hospital.
“But what we didn’t know was how frequently people who go on to suicide have denied having suicidal thoughts when asked directly,” he added.
“This study proves we can no longer ration psychiatric care based on the presence of suicidal thoughts alone. We need to provide high-quality, patient-centred care for everyone experiencing mental illness, whether or not they reveal they are experiencing suicidal thoughts,” Professor Large said.
About one in 10 people will have suicidal ideation in their lifetime. But the study showed suicidal ideation alone was not rational grounds for deciding who gets treatment and who does not, Professor Large said.
“We know that suicide feeling is pretty common and that suicide is actually a rare event, even among people with severe mental illness,” Professor Large added.
Suicidal ideation tells us an awful lot about how a person is feeling, their psychological distress, sometimes their diagnosis and their need for treatment but it’s not a meaningful test of future behaviour.
Suicidal feelings can fluctuate rapidly and people may suicide very impulsively after only a short period of suicidal thoughts.
But, people had good reasons not to disclose thoughts of suicide, fearing stigma, triggering over-reactions or upsetting family and friends, and being involuntarily admitted for psychiatric treatment, Professor Large said.
Professor Large emphasized that clinicians should not assume that patients experiencing mental distress without reporting suicidal ideas were not at elevated risk of suicide.