Why you DONT need a vitamin D calculatorYour shadow can tell you when you are getting vitamin D from the sun, you don't need a calculator.
What’s the cheapest way to get your full recommended dose of vitamin D? Sunlight, of course! It’s no secret that vitamin D deficiency peaks during the winter, while vitamin D levels are highest during the summer. Since nearly half of all Americans are vitamin D deficient, there is a good chance that you are one of them. So, you may want to think about taking advantage of that free, natural source of vitamin D: the sun. The right type of lightUnfortunately, simply being out and about in the sunshine doesn’t guarantee you’ll get the right amount of vitamin D. This is evident in the fact that a high percentage of people from sunny states like Hawaii, California, and Florida are still vitamin D deficient! Maximizing sunlight exposure for vitamin D synthesisThe angle at which sunlight hits you is key to determining if you are receiving enough UV light to facilitate vitamin D synthesis. Angles lower than 45 degrees mean that the sunlight has to pass through too much ozone for any UV light to reach the ground. Angles greater than 45 degrees mean that enough UV light has made it through to help your body produce vitamin D. However, you don’t need a complicated calculator to know if the sun angle is right or not! Think about what else is directly related to the angle of the sun: your shadow. If sunlight is hitting you at an angle of 45°, your shadow will be exactly as long as you are tall. Say you are 5’4” tall; when the sun is exactly halfway up from the horizon, hitting you at a 45-degree angle, your shadow will be exactly 5 feet and 4 inches long. At lower angles, insufficient for vitamin D production, your shadow will be longer than your height. Conversely, at angles greater than 45 degrees, when the sun appears higher in the sky, your shadow will be shorter than you, indicating optimal conditions for vitamin D production. You can shine a lamp on a ruler stood on end and measure its shadow to visualize how this works. In today’s complicated world, we all wish living a healthy lifestyle was easy. Fortunately, getting enough vitamin D to meet your body’s needs is as simple as it gets. Just take a walk outside and check out your shadow. A shadow shorter than you means you are good to go for free, natural vitamin D! |