Studies have found that sunscreens with sun protection factor (SPF) 8 or higher block our skin's ability to produce vitamin D from sunlight by as much as 95 percent (and SPF 15 or higher by 99 percent) [source: Holick, Ginde]. The bottom line? Be reasonable. Talk to your doc...
In winter, with 10% of the body surface area exposed, greater than 45min in the middle of the day is required in most locations to maintain existing 25(OH)D concentration. These data can be used to inform guidelines regarding maintaining vitamin D via sun exposure and may help health ...
How much sun do you need to get enough vitamin D? That depends on your latitude on the Earth and how dark or light your skin is. For a benchmark, consider this study that compared sun exposure in Miami and Boston. In Miami in the summer, it only takes a few minutes for a person ...
Are such supplements necessary, and if so, how much should we be taking?Everyone is DifferentOne might suppose that this question is as easily answered as saying, "Everyone needs to spend 15 minutes in the sun every day." Or, "Everyone needs to take x amount of vitamin D per day." ...
Additionally, there’s a lot of data linking Vitamin D supplementation to a reduced risk of Type II diabetes in adults.7. Reduces Falls And Fractures In The ElderlyThe elderly are at particularly high risk of deficiency, partly because they don’t get as much sun....
Your skin tone can also affect how much vitamin D your body will make—some need longer time in the sun in order to make an efficient amount. Lastly, sunblock can inhibit your ability to naturally make vitamin D—but wedon't advise skipping your daily SPF...
The main reason more people are vitamin D deficient is that they don’t get enough exposure to sunlight. But simply getting outside more isn’t exactly the solution. Many of us live in more northern latitudes (pretty much anywhere north of Florida), where ample sunlight isn’t available yea...
Vitamin D rich foods Seafood– Seafood is one of the best sources. If you eat fish, aim to have two or three portions per week. Choose trout, halibut, sardines, herring, salmon and mackerel. Whole milk– Organic full-fat milk contains much more than semi-skimmed milk and is less likely...
Foods naturally rich in vitamin D are scarce. Fortified foods help fill the gap. However, while many in the scientific community are excited about its promise, they have yet to agree on how much you need and where to obtain it. Read on to better understand the debate and learn what's ...
American Journal of Cardiology. “Clearly vitamin D is important for your heart health, especially if you have low blood levels of vitamin D. It reduces cardiovascular inflammation and atherosclerosis, and may reduce mortality, but it appears that at some point it can be too much of a good ...