The Irish Cancer Society saw a 52% increase in breast cancer patients accessing its services last year.
Almost 300 breast cancer patients used its free Volunteer Driver Service to get to and from chemotherapy appointments.
The ICS also saw a 12% increase in breast cancer patients availing of free counselling sessions.
While over 500 patients had counselling through affiliated cancer support centres.
Breast cancer is the most common form of invasive cancer affecting women in Ireland.
Last year the majority of enquiries to its Cancer Nurseline and Daffodil Centres were from breast cancer patients, or their concerned family members.
It says over 3,700 enquiries were received from people seeking emotional support and advice about their diagnosis.
It's appealing to the public for donations to help fund services - it's 98% funded by donations.