The relationship of adequate and excessive intake of vitamin D to health and disease.

1983 ◽  
Vol 2 (2) ◽  
pp. 173-199 ◽  
Author(s):  
R P Holmes ◽  
F A Kummerow
2020 ◽  
Author(s):  
Lambros Athanassiou ◽  
Ifigenia Kostoglou ◽  
Pavlos Tsakiridis ◽  
Aikaterini Tzanavari ◽  
Eirini Devetzi ◽  
...  

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Stefan Pilz ◽  
Katharina Kienreich ◽  
Daniel Stückler ◽  
Andreas Meinitzer ◽  
Andreas Tomaschitz

Sunlight-induced vitamin D, synthesis in the skin is the major source of vitamin D, but data on the relationship of sun-related behaviour with vitamin D and parathyroid hormone (PTH) levels are relatively sparse. We evaluated whether habitual sun exposure is associated with 25-hydroxyvitamin D (25[OH]D) and PTH levels and whether there exist seasonal variations. We examined 111 hypertensive patients in Austria (latitude 47° N). Frequent sunbathing at home and outdoor sports were associated with higher 25(OH)D levels (P<0.05for both). Red or blond scalp hair as a child, memory of sunburns, preferring sunbathing, frequent stays on the beach or in open-air pools, and solarium use were associated with lower PTH levels (P<0.05for all). Multiple linear regression analyses including age, sex, and body mass index showed that sun exposure score was significantly associated with 25(OH)D (betacoefficient=0.27;P=0.004) and by trend with PTH (betacoefficient=−0.16;P=0.09). These associations were more prominent in summer in which 25(OH)D levels were significantly higher compared to winter. Translation of these findings into recommendations for the prevention and treatment of vitamin D deficiency remains a challenge for the future.


2011 ◽  
Vol 215 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Ankur Gupta ◽  
Paul D. Thompson

2016 ◽  
Vol 7 (1) ◽  
pp. 18-22 ◽  
Author(s):  
M. Serdaroğlu Beyazal ◽  
S. Kırbaş ◽  
A. Tüfekçi ◽  
G. Devrimsel ◽  
A. Küçükali Türkyılmaz

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