▲Together with their two sisters, Alec, Billy, Stephen, and Daniel helped care for their mom when she was diagnosed with breast cancer. They even set up the Carol M. Baldwin Breast Cancer Research Fund in her honor.

▲The actor has frequently spoken about how he chose to take care of his brother with Alzheimer's.

▲The Christian musician revealed that she and her sisters cared for her ailing dad, who suffered from dementia until his death.

▲In her memoir 'Seasons of My Mother,' the Oscar and Tony winner touches on caring for her mother, who had Alzheimer's.

▲The actress and host provided round-the-clock care for her mother, who suffered from Alzheimer's disease.

▲The actor cared for his mother Mary Ann for over two decades. She suffered from Alzheimer's and passed away in 2004.

▲The 'Breaking Bad' star cared for his mother, who was diagnosed with Alzheimer's disease.

▲The actress wrote a memoir entitled 'How to Forget: A Daughter's Memoir.' The book chronicles her care of her father, who suffered from terminal lung cancer, and her mother, who had Alzheimer's.

▲The actress cut all ties with her alcoholic mother in her late twenties. But after learning of her dementia and Alzheimer's disease, she selflessly chose to become her caregiver.

▲The 'L.A. Law' actor's mother suffered from multiple sclerosis and was wheelchair-bound. He took care for her alongside his dad.

▲According to reports, Priscilla Presley had her mother Ann Lillian Wagner-Beaulieu move in with her to take care of her.

▲The talented British actress is an ambassador for the Alzheimer’s Society, and has been since 2012. She credits the organization for helping her and her family deal with the disease after her grandmother was diagnosed.

▲Her mother was committed during most of the actress' life. Despite not seeing a great deal of her, she continued to pay for her care until her own premature death in '62.

▲Like her contemporary Marilyn Monroe, the 'Singin' in the Rain' actress learned early on what it's like to care for an ailing parent. She was only 14 when she started caring for her mother.

▲After her dad died from a heart attack at 90, the comedic actress requested her mother move in with her so she could keep an eye on her. Maggie Griffin passed away in March 2020.

▲The Welsh actress not only took care of her husband Michael Douglas after his cancer diagnosis, but she also helped to care for her father-in-law, movie legend Kirk Douglas, who passed away at the beginning of 2020.

▲The legendary actress cared for her mother during her finals days. Dorothy Hall suffered from Alzheimer's disease, which she had been living with for 15 years until her death in 2008.

▲The former First Lady of the United States was only 12 years old when she had to care for her ailing father, who had terminal leukemia.

▲The Rock was there for his mother during her devastating lung cancer diagnosis. Thankfully, she survived and is still with us today.

▲The R&B singer's daughter Bobbi Christina tragically died in hospice care after having been in a coma for seven months.

▲The former Secretary of State became a caregiver to her ill mother.

▲

The New Kids on the Block member's mother suffered from Alzheimer's disease and he was her main caregiver.

▲The former Brat Pack actor took care of his father who suffered from cancer. His inspiration? His grandfather. He said, "The amazing way my grandfather would just love my grandmother as a ‘woman,’ and not just as a patient."

▲The mother of Lauren, Rogen's wife, suffers from Alzheimer's disease, prompting him and Lauren to organize Hilarity for Charity, an annual fundraiser for the devastating degenerative disease.

▲In 2019, the Princess of Pop announced she would be going on a hiatus and suspending her Las Vegas residency to care for her ailing father.

▲The 'Happy Days' actor cared for his mother for over a decade after she suffered a stroke.

▲The rapper turned actress and talk show host was her mom's primary caregiver. She suffered from the autoimmune disease scleroderma.

▲The actor commuted from Hollywood to Maine to care for his mother who was suffering from ovarian cancer. She survived four relapses, but finally succumbed to the disease in 2014.

▲

What happens when the carer becomes the cared for? Unfortunately, far too many of us will have real-life experience with this question. The natural pattern is that parents pass before their children, however unfortunately there's no way of predicting the future, and many other factors may come into play. While it may be difficult, these celebrities stepped in when times got hard for these family members.

Click through the gallery to find out the celebrities that cared for their ailing relatives.

▲

The veteran actress, director, and producer announced in 2013 that her mother Evelyn was suffering from dementia. She took care of her until her death in 2019.