Table 5 Factors affecting the rate and synthesis of endogenously produced vitamin D
From: Plausible ergogenic effects of vitamin D on athletic performance and recovery
Seasonal Variations in UVB Exposure |
Living at Latitudes (~32-42° N or S) That Are Further Away From The Equator |
Higher Altitudes |
Cloudy Climates |
Thick Ozone Layers due to Pollution |
Darker Skin Pigmentation (higher melanin [natural sun-block] levels) |
Higher Adipose Tissue (obesity) |
Older Age |
Utilization of Sun-block |