references
  
      National Library of Medicine: "Androgenetic alopecia"
    
      American Academy of Dermatology Association: "HAIR LOSS IN NEW MOMS"
    
      Mayo Clinic: "Hair Loss"
    
      Cleveland Clinic: "Is My Thyroid Condition to Blame for My Hair Loss?"
    
      Dermatology and Therapy: "The Role of Vitamins and Minerals in Hair Loss: A Review"
    
      Mayo Clinic: "Can stress cause hair loss?"
    
      Dermatology Practical & Conceptual: "Diet and hair loss: effects of nutrient deficiency and supplement use"
    
      Mayo Clinic: "What you eat promotes radiant hair, skin and nails naturally"
    
      Mayo Clinic: "Preventing hair loss in women"
    
      Cleveland Clinic: "Hair Loss in Women"
    
      Mayo Clinic: "Mayo Clinic Minute: Expert advice for women with thinning hair"
    
      Journal of Cosmetic Dermatology: "Microneedling for Hair Loss"

Is this an emergency? If you are experiencing serious medical symptoms, please see the National Library of Medicine’s list of signs you need emergency medical attention or call 911.

If your hair is thinning on the sides, it could be due to styling choices, stress, medications or hormonal changes, as well as other factors.

Image Credit: Vahit Ozalp/iStock/GettyImages

Image Credit: Vahit Ozalp/iStock/GettyImages

      National Library of Medicine: "Androgenetic alopecia"
    
      American Academy of Dermatology Association: "HAIR LOSS IN NEW MOMS"
    
      Mayo Clinic: "Hair Loss"
    
      Cleveland Clinic: "Is My Thyroid Condition to Blame for My Hair Loss?"
    
      Dermatology and Therapy: "The Role of Vitamins and Minerals in Hair Loss: A Review"
    
      Mayo Clinic: "Can stress cause hair loss?"
    
      Dermatology Practical & Conceptual: "Diet and hair loss: effects of nutrient deficiency and supplement use"
    
      Mayo Clinic: "What you eat promotes radiant hair, skin and nails naturally"
    
      Mayo Clinic: "Preventing hair loss in women"
    
      Cleveland Clinic: "Hair Loss in Women"
    
      Mayo Clinic: "Mayo Clinic Minute: Expert advice for women with thinning hair"
    
      Journal of Cosmetic Dermatology: "Microneedling for Hair Loss"