After the release of Aurthohin's fourth album,
Dhrubok, Sumon's health deteriorated. In 2011, it was announced that he had a spine and
stomach cancer. After surgery and
chemotherapy, Sumon was pronounced cancer-free in 2013. He also suffered from skin cancer and a brain tumour. He wrote a song about his illness, "Cancer", which appeared on
Aushomapto 2. Later, cancer came back several times, but he recovered. Sumon also had a road accident and broke several bones including some discs. He also had a stroke and the left side of his body was paralysed for almost 2 months but eventually, he recovered. In his life, he had to go through a total of 36 surgeries. After four years of break, he came back with his band Aurthohin on 17 December 2021 in front of 35,000 people. People cried after seeing him performing again. Aurthohin became one of the most respected and popular bands in Bangladesh in 2022. He also released a single called "Boyosh holo Amar". ==Personal life==