Why is Linda dying when she is only middle aged Brave new world?

Linda is dying at a relatively young age due to a combination of factors including her addiction to soma, the excessive consumption of alcohol, poor nutrition, and exposure to a harsh environment in the Savage Reservation. Additionally, Linda's mental state has deteriorated due to the clash between the values of the World State and those of the reservation, leading to a sense of hopelessness and despair that has contributed to her decline.