MPB is primarily caused by a combination of genetic and hormonal factors: 

• Genetics: Men with a family history of MPB are more likely to develop it themselves. 

• Hormones: The hormone dihydrotestosterone (DHT) plays a role in hair loss. In men with MPB, hair follicles become more sensitive to DHT, which causes them to shrink and produce thinner, shorter hairs. 

Symptoms: 

Receding hairline, Thinning hair on the crown, Bald patches on the top of the head, and Hair may become finer and weaker. 

Progression: 

MPB typically progresses gradually over time. The rate of hair loss can vary widely between individuals