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They are found throughout the body and play a role in a wide range of biological processes, including cell growth and repair, hormone regulation, and immune function
It's key to remember that not all headaches come from hormone changes
Last Updated on April 30, 2026 by Patrick A
To achieve blood levels of at least 30 ng/mL, adults living at temperate latitudes (think: anywhere with distinct seasons) need 800 to 1,000 IU per day, ideally from vitamin D3, which is more effective than D2
Locomotion can be fine-tuned by various extrinsic and intrinsic factors, such as light, appetite, and energy consumption 8,9,10
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