HONG KONG (Reuters) – Breast cancer is becoming more prevalent in Asia and affecting younger women than those in the U.S. and Europe, a cancer specialist in Hong Kong said.

“We are seeing younger women with breast cancer throughout the whole region. It’s the same in China, Taiwan, Hong Kong, (South) Korea and Singapore,” said Louis Chow, executive director of the Hong Kong-based Organization for Oncology and Translational Research (OOTR).

“Compared to (victims in the) U.S. and Europe, we’re seeing re-menopausal women in Asia, whereas in developed countries we are seeing post-menopausal women, in their mid-50s. In Asia, we see those in their 40s and we are not even surprised to see those in their 30s,” he said in an interview.

Breast cancer is the most common cause of cancer in women. In the United States, it affects one in eight women and is the second most common cause of cancer deaths in women after lung cancer.