TLDR Men with a family history of hair loss are more likely to experience it themselves, especially if both parents have hair loss.
The 2004 study with a sample size of 254 Caucasian men aged 18 to 49 found that family history is a significant factor in the risk of developing androgenetic alopecia (AGA) in men. Men whose fathers had hair loss were 2.5 times more likely to suffer from hair loss themselves, and this association persisted after adjusting for age. The risk was even higher for men with hair loss in both parents, with odds ratios of 7.9 and 14.7. The study also highlighted the importance of the mother's father's hair loss status in assessing risk. While age was a risk factor for all men, family history was particularly influential between ages 25 and 45. The study was geographically limited to Dayton, Ohio, and used self-reported data for parental hair loss.
24 citations,
January 2000 in “Dermatology” Gene linked to common hair loss found, may lead to new treatments.
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54 citations,
May 1998 in “Urology” Men with enlarged prostates often have more severe baldness.
74 citations,
January 1998 in “Dermatology” Men who think they are losing hair feel worse about themselves, especially if they are younger.
1 citations,
January 2020 in “Postepy Dermatologii I Alergologii” Family history, especially on the mother's side, increases the risk of female pattern hair loss.
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The article concludes that understanding the causes of hair loss and using continuous treatments like minoxidil and finasteride can help manage it, despite potential side effects.
January 2015 in “Journal of Clinical Dermatology” 
72 citations,
March 2005 in “British Journal of Dermatology” AGA can occur in children with family history; early diagnosis and treatment important.
49 citations,
January 2004 in “Dermatology” Men with a family history of hair loss are more likely to experience it themselves, especially if both parents have hair loss.
