What a lot of people don’t realize, however, is that unlike vitamin C or vitamin D, there are many types of B vitamins that each play their own important role in maintaining how your body functions. In particular, vitamin B7—commonly known as biotin—stands apart from the rest with its role in keeping skin, hair, and nails healthy and looking vibrant and youthful. In fact, biotin is often referred to by its nickname "vitamin H" from the German words Haar and Haut which mean, you guessed it—hair and skin. Other sources say that biotin was originally called vitamin H because when nutrients were first being discovered they were named in alphabetical order.
No matter where its name originated, biotin, like all the other B vitamins, is critical for our body to thrive. B7 is used for a myriad of pathways that determine the health of every single one of our trillions of cells. Without a doubt, biotin is essential for life.
Your body cannot synthesize biotin, so it must be obtained through diet, supplementation, and intestinal bacteria. Any protein-bound biotin from your food ends up being converted to free biotin, which is then absorbed within the small and large intestine
. Once absorbed, it is then moved into the systemic circulation, picked up by the liver, to finally cross the blood-brain barrier into the central nervous system
Since biotin is found in many different kinds of food, severe deficiencies in this nutrient can be rare. However, in my functional medicine
clinic, I often see lower, suboptimal levels actually becoming increasingly more common. Why is that? Well, due to the fact that a lot of this conversion happens within your gut, many patients who struggle with inflammatory bowel diseases
or other microbiome dysfunctions can have trouble maintaining adequate amounts of biotin
. Other factors like antibiotics, which wipe out the beneficial bacteria in your gut, contribute to low levels of biotin since they also end up killing biotin-producing bacteria