scholarly journals Long-term effects of folic acid and vitamin-B12 supplementation on fracture risk and cardiovascular disease: Extended follow-up of the B-PROOF trial

Author(s):  
Sadaf Oliai Araghi ◽  
Jessica C. Kiefte-de Jong ◽  
Suzanne C. van Dijk ◽  
Karin M.A. Swart ◽  
Kim J. Ploegmakers ◽  
...  
2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Sadaf Oliai Araghi ◽  
Jessica C Kiefte-de Jong ◽  
Suzanne van Dijk ◽  
Natasja van Schoor ◽  
Lisette CPGM de Groot ◽  
...  

Abstract Objectives To investigate the possible effects of the intervention with folic acid and vitamin B12 supplementation on fracture and cardiovascular disease risk: 5–7 years after the end of the intervention period of 2–3 years. Methods Extended follow-up of B-PROOF trial, a multi-center, double-blind randomized placebo-controlled trial designed to assess the effect of 2–3 years daily supplementation with folic acid (400 µg) and vitamin-B12 (500 µg) versus placebo on fracture incidence. Fracture and cardiovascular outcomes were assessed by follow-up questionnaire. Fracture incidence (and a part of cardiovascular disease incidence) was verified by general practitioners (GPs). Results A total of 1298 individuals participated in the second follow-up round. Median age at baseline was 71.0 years [68.0–76.0] for both groups (n = 662 in the treatment group and n = 636 in the placebo group). No effect of the intervention on first osteoporotic fracture and other fracture risk after a follow up of 5–7 years was observed (HR: 0.99, 95% CI: 0.62; 1.59 and HR: 0.77; 95% CI: 0.50; 1.19, respectively) and also not for cardiovascular- or cerebrovascular disease (OR: 1.14; 95%CI: 0.74–1.74 and OR: 1.01; 95%CI: 0.76–1.33, respectively). Significant interaction for total homocysteine level was observed for osteoporotic- and any fracture (P = 0.10 and 0.06 resp.), which indicated a significantly lower risk of fracture in the intervention group with higher total homocysteine level. Conclusions This study does not support a prolonged effect of supplementation of folic acid and vitamin B12 on fracture risk, or on cardiovascular disease in older individuals with elevated homocysteine concentration. However, B-vitamin supplementation may be beneficial in reducing fractures in individuals with higher total homocysteine levels. Funding Sources The initial B-PROOF study has received funding so far by The Netherlands Organization for Health Research and Development (ZonMw), the Hague; unrestricted grant from NZO (Dutch Dairy Association), Zoetermeer; Orthica, Almere; NCHA (Netherlands Consortium Healthy Ageing) Leiden/Rotterdam; Ministry of Economic Affairs, Agriculture and Innovationn, the Hague; Wageningen University, Wageningen; VUmc, Amsterdam; Erasmus Medical Center, Rotterdam. Supporting Tables, Images and/or Graphs


2018 ◽  
Vol 28 (2) ◽  
pp. 275-282 ◽  
Author(s):  
Sadaf Oliai Araghi ◽  
Jessica C. Kiefte-de Jong ◽  
Suzanne C. van Dijk ◽  
Karin M.A. Swart ◽  
Hanneke W. van Laarhoven ◽  
...  

BMJ ◽  
2007 ◽  
Vol 334 (7599) ◽  
pp. 885 ◽  
Author(s):  
Nancy R Cook ◽  
Jeffrey A Cutler ◽  
Eva Obarzanek ◽  
Julie E Buring ◽  
Kathryn M Rexrode ◽  
...  

2015 ◽  
Vol 2015 ◽  
pp. 1-3 ◽  
Author(s):  
Fabian Wolpert ◽  
Krisztina Baráth ◽  
Janis Brakowski ◽  
Roland Renzel ◽  
Michael Linnebank ◽  
...  

Background. Funicular myelosis is a known consequence of exposure to nitrous oxide. Nevertheless, there are only a few clinical trials assessing its long-term effects and there is no literature about the role of nutritional vitamin B12 supplementation in the context of nitrous oxide abuse.Case Descriptions. We diagnosed funicular myelosis in a young butcher, who consumed high amounts of meat regularly. Since the diagnostic process did not reveal any metabolic causes, reinterrogation of the patient uncovered recreational abuse of nitrous oxide out of whipped cream can gas cartridges. After stopping abuse and supplementation of vitamin B12, the patient recovered almost completely.Conclusions. In our case, even high nutritional vitamin B12 uptake could not compensate the noxious effects of nitrous oxide. Since there are emerging reports of increasing misuse, this should be considered in the diagnostic and therapeutic care of patients with nitrous oxide abuse. Furthermore, our case emphasizes that patients with vitamin B12 deficiency should be assessed for nitrous oxide abuse.


Cardiology ◽  
2006 ◽  
Vol 107 (1) ◽  
pp. 57-62 ◽  
Author(s):  
Martijn G.H. van Oijen ◽  
Floor Vlemmix ◽  
Robert J.F. Laheij ◽  
Lea Paloheimo ◽  
Jan B.M.J. Jansen ◽  
...  

2015 ◽  
Vol 7 (1) ◽  
Author(s):  
Dieuwertje E. G. Kok ◽  
Rosalie A. M. Dhonukshe-Rutten ◽  
Carolien Lute ◽  
Sandra G. Heil ◽  
André G. Uitterlinden ◽  
...  

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