Vitamin D is what your body needs to be strong, feel good and stay off sickness. Not all the individuals, however, get an opportunity to spend a lot of time under the sun. This is where UVB LED light is useful. It provides your skin with the right boost so that it can produce its own Vitamin D in the same way as it would in the sun. And as your own body produces more Vitamin D, then it can absorb more calcium, keep your immune system busy and even make you feel lighter.