Women are carrying the bigger burden of Alzheimer’s disease in the U.S., according to a new report — making up not only most of the cases, but paying more of the cost of caring for the growing population of people with the mind-destroying illness.

The new report from the Alzheimer’s Association paints Alzheimer’s as a disease that disproportionately affects women, both as patients and as caregivers. It points out that women in their 60s are about twice as likely to develop Alzheimer’s over the rest of their lives as they are to develop breast cancer.

“So women are at the epicenter of Alzheimer’s disease today, not only by being most likely to be diagnosed with Alzheimer’s, but also by being the caregiver most of the time,” said Maria Carrillo, vice president of the advocacy group.

Alzheimer’s affects more than 5 million Americans, a number projected to soar to 13 million over the next 35 years. A study published earlier this year suggested it’s a big killer, taking down more than 500,000 Americans every year.

Three out of five of those living with Alzheimer’s are women, the report finds. “The surprising statistic we pulled out of this report actually is that women over 65 have a one in six chance of developing Alzheimer’s disease, in comparison to one out of 11 in men,” Carrillo said. And that compares to a one in eight lifetime risk for developing breast cancer.

Even if they escape the disease themselves, women often are burdened in another way, by having to care for afflicted loved ones. There are more than twice as many women as men taking care of someone with Alzheimer’s all day, every day, the report finds.

Join our Newsletter for the latest news right to your inbox