Dave Coulier Says Cancer Treatment Left Him Unable to Eat Solid Food
Dave Coulier told fans on Instagram that his changed appearance and voice are the result of cancer treatment, including extensive radiation for carcinoma in his throat.
People reported that the Full House alum shared the update on May 7, 2026, after fans noticed he looked and sounded different. Coulier has dealt with two cancers in less than two years, including stage 3 non-Hodgkin lymphoma and p16 squamous carcinoma, a head and neck cancer found at the base of his tongue.
I grew up in the era when Coulier was Uncle Joey, the guy doing voices and goofy bits on family TV. So seeing him explain why his own voice now sounds different lands in a strange, sobering way.
“I look differently, and I sound differently”
In his Instagram message, Coulier addressed the concern directly.
“Hi everyone, it’s me Dave, and I haven’t posted in quite a while and the last time I did some of you said that I look differently, and I sound differently, and I do,” he began the video. “And what you’re seeing is the side effects of extensive radiation that I went through for carcinoma in my throat.”
Entertainment Weekly reported that Coulier said the treatment has kept him from eating solid food and led to a 45-pound weight loss. He didn’t dress it up. He told people what happened. Plain and painful.
“I haven’t been able to eat solid food in months. So I’ve lost 45 pounds, that’s what you’re seeing. And it’s affected my ability to speak, some of you have said that I speak differently. So you’re right on with what you’re seeing and what you’re hearing.”
What radiation can do
The specific side effects of radiation can vary by person, but head and neck radiation can be rough on the mouth and throat. According to the National Cancer Institute, radiation therapy to the head and neck may harm salivary glands and mouth tissue, and it can make it hard to chew and swallow safely.
Cancer Research states that radiotherapy in the head or neck area can cause swelling and soreness in the throat, which may make swallowing solid food difficult.
The good news in the update
ABC7 reported that Coulier also shared encouraging news, saying recent scans and his prognosis look positive for both the throat carcinoma and lymphoma.
People added that Coulier said his recent PET scans came back with good news, adding, “The prognosis looks good for both the carcinoma in my throat and the lymphoma.” The outlet also reported that he had said in February that he was in remission.
Coulier’s also said that he has been making art, writing, and working on Awear Market, his non-toxic store.
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