Summary
Scientists discovered significant changes in breast tissue as women age, especially during menopause. These changes, which include fewer and less active cells, may increase the risk of breast cancer. The study, conducted by researchers at the University of Cambridge and the University of British Columbia, examined over 3 million cells from over 500 women.
Key Facts
- Researchers studied over 3 million cells from more than 500 women aged 15 to 86.
- The research focused on breast tissue changes related to aging.
- Significant changes occur during menopause, with fewer breast cells and less frequent cell division.
- Structural changes in breast tissue may create conditions that allow cancer to grow more easily.
- As women age, milk-producing structures shrink or disappear, and fat cells increase.
- Immune defenses within the breast tissue weaken over time.
- Hormonal changes, especially lower estrogen levels during menopause, play a key role.
- The study aims to influence future cancer screening and prevention strategies.
