Why according to research are suicide rates higher in rural communities?

Directions: Read the passage and answer the following question.

In 1999, Brian and Nerida Egan had to surrender their Darling Downs property in Queensland. They had run a mixed cattle farm for 12 years, but it hadn’t rained a drop for the last three and they couldn’t afford to continue. The couple walked away with nothing but their cattle dog, Stumpy. “It was soul-destroying to lose everything,” says Brian. “There was this ‘beast’ inside me that had taken over my life. I had no hope and just could not see any future.” At the age of 55, Brian had twice attempted to take his own life and was with severe clinical depression and symptoms of post-traumatic stress disorder (PTSD), as a result of disturbing experiences he witnessed while on naval service in Indonesia in his early 20s. Depression is one of the most significant human costs of the drought, with research showing higher suicide rates in rural communities, especially among men, due to social isolation and difficulty accessing help. The stigma of mental illness left Brian with only his mother, Hilda, and Nerida to rely on. He recalls running and hiding in the wardrobe when people came to the front door. “I was just so ashamed of what I had become, I did not want anyone to see me.”
Brian was sent to Greenslopes Private Hospital in Brisbane, where he would end up being admitted five times over the next two years. “I was catatonic. I couldn’t eat. I couldn’t talk or write. I didn’t know who I was, or who anyone else was.”
The doctors tried many different types of medication and treatment on Brian, but with limited benefits. Finally it was suggested to Brian by a psychologist that maybe the best thing for him to do was to go out and find someone worse off, and help them.