What Vitamin Deficiency Causes Your Head to Sweat?
                                
                                
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                                    5 min read                                
                            
                                According to a study published in the *New England Journal of Medicine*, approximately one billion people worldwide have low levels of Vitamin D. For many, one of the earliest signs of this deficiency is a sweaty head, often without any other apparent cause. While it may seem like a minor inconvenience, this symptom can indicate an underlying nutritional issue that needs attention.