Adequate vitamin D3 skin synthesis versus erythema risk in the Northern Hemisphere midlatitudes
PBN-AR
Instytucja
Instytut Geofizyki Polskiej Akademii Nauk
Informacje podstawowe
Główny język publikacji
en
Czasopismo
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY (30pkt w roku publikacji)
ISSN
1011-1344
EISSN
1873-2682
Wydawca
ELSEVIER SCIENCE SA
DOI
Rok publikacji
2018
Numer zeszytu
179
Strony od-do
54-65
Numer tomu
Liczba arkuszy
Autorzy
Pozostali autorzy
+ 1
Słowa kluczowe
en
Solar UV
Spectral measurements
Vitamin D3
Erythema
Optimal daily dose
Safe sunbathing
Streszczenia
Język
en
Treść
Health-optimum-exposure index (HOED is proposed to assess if the prescribed amount of vitamin D-3 (target value) could be synthesized in the human skin without erythema appearance. It is defined as the ratio between the vitamin D-3 quantity received during the maximum allowed outdoor exposure without erythema risk and the target value. Sunbathing is safe for HOEI > 1 and 1/HOEI represents a part of minimal erythema dose (MED) necessary to obtain the target value. We examine the following targets: a vitamin D-3 quantity equivalent to 1000 IU vitamin D-3 taken orally, and an optimal vitamin D-3 quantity defined by Krzyscin et al. (2016). The biologically weighted (previtamin D-3 and erythemal) doses from the Northern Hemisphere midlatitudinal stations are analyzed to find HOEI dependence on personal and meteorological factors. HOEI depends mostly on the exposed skin area, person's age, and sun elevation at noon but not on the Fitzpatrick skin phototype. We found that only young adults (< 21 yr) could safely obtain vitamin D-3 quantity, which is equivalent to 1000 IU taken orally, almost throughout the whole year. Duration of such exposures appears < 1 h only in the warm subperiods of the year (April-September) for a person with minimal erythema dose of 330 J m(-2). Exposing larger part of the body (similar to 30%) enables the oldest persons (> 59 yr) to reach 1000 IU target during warm days in spring and summer. The optimal daily vitamin D-3 quantity could only be synthesized only by young adults for about 40-60% of days in the May-August period if they expose at least 1/3 part of their body surface area. Vitamin D-3 supplementation seems to be necessary over the whole year for the oldest persons with daily dosage of similar to 2000 IU but reduced to similar to 1000 IU in summer for sunseekers exposing significant part of the body.
Cechy publikacji
discipline:Geofizyka – dziedzina nauk o ziemi
discipline:Medycyna
discipline:Geophysics – field of earth sciences
discipline:Medicine
Original article
Original article presents the results of original research or experiment.
Oryginalny artykuł naukowy
Oryginalny artykuł naukowy przedstawia rezultaty oryginalnych badań naukowych lub eksperymentu.
Inne
System-identifier
PBN-R:872184
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