Jonas Brothers Reflect on Their Father’s Colon Cancer Battle: “Cancer Affects Everyone” and Brought Us Closer

“Have I been good to my kids and my wife?” he recalled thinking upon hearing the diagnosis, during an interview with People Magazine.

Colon (or colorectal) cancer impacts the large intestine or rectum and often requires swift, aggressive treatment. Kevin Sr. underwent care for early-stage disease and thankfully reached remission a year later—but the emotional toll reshaped his family’s outlook.

In stage two colon cancer, tumors are typically larger than those found in stage one—but they remain confined to the colon wall.

Once removed, every tumor is carefully examined under a microscope by a pathologist. If specific high-risk features are identified—such as aggressive cell patterns or signs of spread within the wall—there’s a greater chance the cancer could return. In these cases, doctors may recommend chemotherapy to help reduce the risk of recurrence.

WATCH: Colon cancer stages 1, 2, and 3.

Dr. Heather Yeo, a Colorectal Surgeon and Surgical Oncologist at Weill Cornell Medicine and NewYork-Presbyterian, explains that the type of treatment for stage 2 colon cancer patients depends on the depth of the tumor into the colon wall and the risk of it spreading.

“If it has bad features– for example, if when they look at the pathology slides under the microscope, if they see that it’s involving some of the vessels nearby, then that is a higher risk factor,” Dr. Yeo explained to SurvivorNet.

“Then, those patients might be more likely to benefit from chemotherapy. Chemotherapy has toxicity and has side effects on patients,” Dr. Yeo added.

Before treatment decisions are made, the tumor’s pathology is carefully studied to weigh the risks and determine if chemotherapy is needed, which can cause patients’ side effects such as hair loss, nausea, diarrhea, vomiting, neuropathy, among other impacts.

“So cancer affects everyone in our lives, and so we’re lucky to be a part of this campaign to make sure that we raise more awareness for people and bring joy to them in a different capacity,” said Joe Jonas.

“[The] more emotionally challenging periods really test your endurance,” added Nick Jonas, reflecting on what the family endured.

Before their fame, Kevin Sr. wrote and recorded Christian music in the early 1990s—where he met his wife, Denise. Years later, their sons—Kevin, Joe, and Nick—became household names after rising through Disney Channel fame and breaking into pop-rock stardom with their 2005 debut album It’s About Time. Their musical legacy continues today with their 20th anniversary tour.

 

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But the family’s connection to cancer deepened when Kevin Jonas revealed his own diagnosis of basal-cell carcinoma, a form of skin cancer.

“Friendly reminder to get your moles checked,” he urged in an Instagram post, pointing to a treated spot on his forehead.

WATCH: When checking for melanoma, remember your ABCDEs

The main types of skin cancer include basal cell carcinoma, squamous cell carcinoma, and melanoma.

Melanoma is among the most concerning forms of skin cancer because of its ability to spread to other organs. This type of skin cancer is most commonly found on sun-exposed areas of the skin, such as the face, neck, arms, and legs. Surprisingly, it might also develop in places that have never been exposed to the sun, such as the palms of your hands or soles of your feet, your eyes or mouth, or under your nails.

While the exact type of treatment Kevin Jonas received for his skin cancer remains unclear, Mohs surgery is the most common option in areas such as the face, ears, and nose.

Mohs micrographic surgery (MMS) is a microscopically controlled procedure that removes skin cancer by conservatively cutting along the entire margin until the surgeon reaches clear tissue. It’s commonly used to remove other skin cancers, such as basal and squamous cell carcinomas.

WATCH: Best surgery option for melanoma.

During the procedure, your doctor will numb the area with anesthesia and remove the tumor using a scalpel. You’ll be asked to wait while they analyze layers of the removed sample under a microscope. The procedure is done one layer at a time, examining each layer for cancer cells before removing the next layer.

This process continues until all cancer cells are removed from the area.

With both father and son personally affected, the Jonas Brothers’ commitment to raising awareness is rooted in lived experience. Their voices now echo beyond the stage, amplifying a message of resilience, early detection, and hope.

When One Person is Diagnosed, the Whole Family Feels It

A serious health diagnosis sends shockwaves far beyond the individual—it touches the lives of every family member. Research published in The Journal of the Royal Society of Medicine found that “most chronic diseases have similar effects on family members [as they do on the patient], including psychological and emotional functioning, disruption of leisure activities, effect on interpersonal relationships, and financial resources.”

 

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Parents, siblings, spouses, and others often carry invisible emotional burdens: “helplessness, lack of control, anger, embarrassment,” researchers observed.

The strain can show up in all kinds of ways—disrupted sleep, altered eating habits, and spiritual or cultural searching for meaning. It can limit freedom, deepen fears about death, and leave loved ones desperately seeking support and understanding.

Yet even amid the emotional toll, experts emphasize that a strong support system has the power to bring families closer. The pain of a diagnosis, while devastating, can also strengthen bonds and foster deeper empathy.

Understanding Kevin Jonas Sr.’s Diagnosis

Colon cancer is very treatable and curable if caught early. Colon cancer screenings can involve at-home tests such as Cologuard, but a colonoscopy is more effective, according to SurvivorNet experts.

The cancer starts when abnormal lumps called polyps grow in the colon or rectum. It takes up to 10 years for a colon polyp to become full-blown cancer, according to SurvivorNet experts.

The American Gastrointestinal Association lowered the recommended initial age for colorectal screening from 50 to 45. However, experts recommend screening earlier for some people who may be at an increased risk of developing colon cancer, such as those with a family history of the disease.

WATCH: Debunking misconceptions about colon cancer.

The most poignant symptom of colon cancer is a change in bowel habits. This may include constipation or diarrhea due to changes in the size or shape of bowel movements. A change in stool color, particularly black or tarry stools, can indicate bleeding from a tumor that lies deep in the colon.

Other symptoms can be harder to pinpoint, such as abdominal pain and unintentional weight loss. Finally, some tumors bleed a small amount over a prolonged period, resulting in anemia (a low red blood cell count) that is detected through blood work.

Questions to Ask Your Doctor

If you are facing a colon cancer diagnosis, here are some questions you may ask your doctor.

• What are my treatment options based on my diagnosis?
• If I’m worried about managing the costs of cancer care, who can help me?
• What support services are available to me? To my family?
• Could this treatment affect my sex life? If so, how and for how long?
• What are the risks and possible side effects of treatment?

Learn more about SurvivorNet's rigorous medical review process.

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