Alterations of the gut microbiota have previously been observed due to sleep deprivation. A novel study shows the close crosstalk between sleep quality and gut microbiome diversity, which is mediated by the pro-inflammatory cytokine IL-6.

Poor sleep quality is a widespread problem and has been associated with several diseases in humans such as cardiovascular disease and cancer. Previous research has reported that the human gut microbiota may express endogenous circadian rhythms, together with findings showing alterations of the gut microbiota in response to sleep deprivation. On the other hand, the gut microbiota and its metabolites regulate the immune system including cytokine activity via bidirectional signaling of the brain-gut-microbiome axis, which may influence sleep and circadian rhythm.

There’s been some debate as to whether it’s preferable to synthesize vitamin D naturally from sun exposure or from supplements.

The short answer is to think about how nature designed humans. Are we designed to take supplements or to be out in the sun? No.

Check out my previous post that explains how vitamin D is synthesized in the body and the numerous health benefits here. Yet, many physicians and dermatologists recommend avoiding sun exposure because it can increase the risk of melanoma. But is this really true?