Publication date: Available online 18 March 2017
Source:The Journal of Steroid Biochemistry and Molecular Biology
Author(s): Lynette M. Smith, Gallagher J. Christopher, Suiter Corinna
Falls are a serious health problem in the aging population. Because low levels of vitamin D have been associated with increased fall rates, many trials have been performed with vitamin D; two meta-analyses showed either a small effect or no effect of vitamin D on falls. We conducted a study of the effect of vitamin D on serum 25 hydroxyvitamin D (25OHD) and data on falls was collected as a secondary outcome. In a 12-month double blind randomized placebo trial, elderly women, mean age 66 years, were randomized to one of seven daily oral doses of vitamin D or placebo. The main inclusion criterion for study was a baseline serum 25OHD<20ng/ml(50nmol/L). A history of falls was collected at baseline and fall events were collected every 3 months. Results showed that the effect of vitamin D on falls followed a U-shaped curve whether analyzed by dose or serum 25OHD levels. There was no decrease in falls on low vitamin D doses 400, 800 IU, a significant decrease on medium doses 1600, 2400,3200 IU (p=0.020) and no decrease on high doses 4000, 4800 IU compared to placebo (p=0.55). When compared to 12-month serum 25OHD quintiles, the faller rate was 60% in the lowest quintile <25ng/ml (<50nmol/L), 21% in the low middle quintile 32–38ng/ml (80–95nmo/L), 72% in the high middle quintile 38–46ng/ml (95–115nmo/L) and 45% in the highest quintile 46–66ng/ml (115–165nmol/L). In the subgroup with a fall history, fall rates were 68% on low dose, 27% on medium doses and 100% on higher doses. Fall rates on high doses were increased compared to medium doses (Odds Ratio 5.6.95% CI: 2.1–14.8). In summary, the maximum decrease in falls corresponds to a 12- month serum 25OHD of 32–38ng/ml (80–95nmol/L) and faller rates increase as serum 25OHD exceed 40–45ng/ml (100–112.5nmol/l). The Tolerable upper limit (TUL) recently increased in 2010 from 2000 to 4000 IU/day may need to be reduced in elderly women especially in those with a fall history.
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Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com
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Σάββατο 18 Μαρτίου 2017
Medium doses of Vitamin D Decrease Falls and Higher Doses of Daily Vitamin D3 Increase Falls: A Randomized Clinical Trial
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- Spatio-temporal patterns of event-related potentia...
- 3T Hippocampal Glutamate-Glutamine Complex Reflect...
- Genetic or pharmacological activation of the Droso...
- New concepts of personalized therapy in salivary g...
- Dosimetric comparison between treatment plans of p...
- A Modified Dual-plane Technique Using the Serratus...
- Dual lanthanide-doped complexes: the development o...
- Absence of functional fetal regulatory T cells in ...
- C3 nephritic factors: a changing landscape
- Rape myth acceptance in convicted rapists: A syste...
- Alcohol abuse, personality disorders, and aggressi...
- Ventricular wall biomaterial injection therapy aft...
- Biomaterials for intervertebral disc regeneration ...
- Croconaine nanoparticles with enhanced tumor accum...
- Long-term bioavailability of redox nanoparticles e...
- Changes in health-related quality of life of oral ...
- Dexamethasone injection into the pterygomandibular...
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- Protective role of misoprostol in prevention of ge...
- Electromyographic ratio of masseter and anterior t...
- Endoscopic management of bilateral vocal fold para...
- Anterior open bite correction by Le Fort I osteoto...
- Reply
- Normal PAI-2 level in French FXII-HAE patients
- Relationship Between Laryngeal Electromyography an...
- Improved Glottic Exposure for Robotic Microlarynge...
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- Pitch Strength as an Outcome Measure for Treatment...
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- Mazindol: a risk factor for pulmonary arterial hyp...
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- Outcome after operative intervention for traumatic...
- Dissecting intracranial aneurysm in pregnancy: A r...
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- Spontaneous extradural and subgaleal hematoma: A r...
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