The conventional belief that light skin evolved as humans migrated north out of Africa has been widely accepted for many years. However, recent research suggests that the origin of light skin may be more closely tied to the advent of agriculture rather than merely the result of migrating to higher latitudes. This shift in understanding revolves around the crucial role of vitamin D and dietary changes, such as a shift from a diet rich in animal-based foods to one reliant on cereal crops prompted by agricultural practices.
Read MoreAs summer progresses, I find myself spending more time outdoors and have naturally acquired a slightly darker complexion than during the colder months. While at the beach with family, we discussed our varying abilities to tan. Some of us had yet to achieve a noticeable tan, while others were well on their way. We all agreed that with more time in the sunshine, we would soon have a deeper tan. It made me curious about the science behind tanning and why our skin changes color in the first place.
Read MoreMask dissenters claim they are unhealthy for you, and a few have mentioned that they cause something called mask mouth. I had never heard of it, even though I am a dentist, so I did some digging. I will cover my observations and the science in this post to cover this new phenomenon.
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