Science
6 doctors on Biden's cancer diagnosis, how it may have arisen and his treatment options
Former President Biden’s weekend announcement that he has an “aggressive” form of prostate cancer that has metastasized to his bone sparked the usual sympathy from supporters — and sharp suspicions among detractors.
The announcement comes amid fresh reporting on Biden and his inner circle hiding the degree to which his mental acuity was slipping during his presidency and campaign for reelection last year, and the advanced stage of his cancer drew immediate accusations from the right that the former president was also hiding problems with his physical health.
President Trump said he was surprised the cancer “wasn’t notified a long time ago,” suggested the public wasn’t being properly informed and said that “people should try and find out what happened.”
The Times spoke to six doctors who are experts in prostate cancer. They said the information Biden’s office has shared about his condition is indeed limited, but also that many of the assumptions being made publicly about the progression of such cancers, the tests that can screen for them and the medical guidelines for care among men of Biden’s advanced age — 82 — were simply off base.
The cancer
In its statement Sunday, Biden’s office said the former president was seen last week “for a new finding of a prostate nodule after experiencing increasing urinary symptoms,” and on Friday was “diagnosed with prostate cancer, characterized by a Gleason score of 9 (Grade Group 5) with metastasis to the bone.”
Dr. Mark Litwin, chair of UCLA Urology, said that description indicated Biden has a more advanced and aggressive form of prostate cancer than is diagnosed in most men, but that it was nonetheless “a very common scenario” — with about 10% of such cancers in men being metastatic at diagnosis.
Dr. Howard Sandler, chair of the Department of Radiation Oncology at Cedars-Sinai, agreed.
“It’s a little unusual for him to show up with prostate cancer that’s metastatic to bone at first diagnosis, but not extraordinary,” he said. “It happens every day to elderly men.”
That’s in part because of the nature of such cancer, the modern screening guidelines for older men, and the advanced treatment options for such cancer when it is found, the doctors said.
Prostate cancer in small, slow-growing amounts is prevalent among men of Biden’s age, whether it’s causing them problems or not. Most prostate cancers can be slowed even more dramatically — for years after diagnosis — with medical intervention to block testosterone, which feeds such tumors.
For those reasons, many doctors recommend men stop getting tested for prostate-cancer-related antigens, through what’s known as a PSA test, around age 70 or 75, depending on the individual’s overall health.
That advice is based in part on the idea that finding a slow-moving prostate cancer and deciding to act on it surgically or otherwise — which many alarmed patients are inclined to do when they get such news — can often lead to worse outcomes than the cancer would have caused if simply left alone. That includes impotence, incontinence and life-threatening infections.
Also, if an older patient does start experiencing symptoms and is found to have a more advanced prostate cancer, modern treatments are capable of stalling the cancer’s growth for years, the doctors said — often beyond the point when those patients are statistically likely to die from something else.
Even when older patients are tested and show somewhat elevated PSA levels, it is not always of immediate concern, and they are often told to just keep an eye on it, Litwin said. Simply put, doctors “typically don’t get too exercised about a diagnosis of prostate cancer in an 82-year-old,” he said.
Dr. Sunil Patel, a urologic oncologist and an assistant professor of urology and oncology within the Brady Urological Institute at the Johns Hopkins University School of Medicine, said that’s because the average life expectancy for an American man is under 85.
“And so most men at that time, at 75, they’re like, ‘OK, well, if it’s not going to kill me in the next 10 years, I’m going to leave it alone,’” Patel said. “That’s a really shared decision between the patient and the physician.”
When advanced, aggressive prostate cancers are found, as with Biden, the prognosis — and treatment plan — is of course different, the doctors said. “He is for sure going to need treatment,” Litwin said. “This is not the type that we can just observe over time like we often do.”
But that doesn’t mean Biden’s doctors dropped the ball earlier, he and others said.
The diagnosis
Biden’s office has not said whether he was receiving PSA screenings. A letter from Biden’s White House physician in February of last year made no mention of PSA testing, despite other recent presidents’ medical assessments including that information. Biden’s aides did not respond to requests for comment.
The doctors The Times spoke to had no special insight into Biden’s medical care, but said his diagnosis did not make them feel any less confident about the caliber of that care or suggest to them any nefarious intent to hide his condition.
For starters, “it would be considered well within the standard of care” for Biden to have forgone testing in recent years, given his age, Sandler said. “Certainly after 80.”
Litwin said he believes Biden probably was still tested, given his position, but that doesn’t mean he was necessarily hiding anything either. Some forms of aggressive prostate cancer don’t secrete antigens into the blood at levels that would be flagged in a PSA test, while others can grow and even metastasize rapidly — within a matter of months, and between routine annual screenings, he said.
Patel said he has personally found “very aggressive disease” in patients who had relatively normal PSA levels. “I don’t think anyone can blame anyone in terms of was this caught too late or anything like that,” he said. “This happens not too infrequently.”
Dr. Alicia Morgans, associate professor of medicine at Harvard Medical School, a genitourinary medical oncologist and the director of the Survivorship Program at the Dana-Farber Cancer Institute, agreed. Even if a patient is diligent about getting screened annually, “there will be some cancers that arise between screening tests,” she said.
Morgans said things gets even more complicated as men get older, when their PSA number may increase and start getting monitored before it is considered a clear indicator of cancer.
“Maybe it’s up a while. It was not cancer before, it hasn’t really changed that much. Now it has become cancer. It’s not the fault of anyone,” she said. “You can do everything right and things like this can happen.”
The treatment
Biden’s office said his cancer appeared “to be hormone-sensitive, which allows for effective management.”
The doctors The Times spoke to were relatively bullish about Biden’s short-term — and even medium-term — prognosis. “It’s not curable, but it’s highly treatable,” Morgans said.
“Without meaning to sound glib, there’s never been a better time to have metastatic prostate cancer in the history of medicine,” Litwin said — in part thanks to Biden’s own cancer “moonshot” initiative and the funding it sent to institutions such as UCLA, which has helped develop new drugs.
“There are numerous, very effective treatments for a patient in his situation,” Litwin said.
The standard and most likely course of care for Biden will be ADT, or androgen deprivation therapy, which involves a pill or shot that will shut down testosterone production, the doctors said.
“Now, an 82-year-old doesn’t have the same testosterone production as a 22-year-old anyway, so there’s not that far to go. But we shut it off,” Litwin said. “And by shutting it off, it cuts out the principal hormone that feeds the prostate cancer. That alone can be very, very effective.”
Dr. Geoffrey Sonn, urologic oncologist and associate professor of urology at Stanford Cancer Center, said Biden’s cancer is serious, but the ADT treatment “will make prostate cancer cells shrink down, stop growing, at least temporarily, in the vast majority of guys.”
“That is, it’s not a permanent fix, in that those cells will eventually figure out a way to grow even with low levels of testosterone,” Sonn said. “But that can take several years, and sometimes longer.”
Recent studies have shown that adding additional medications to an ADT regime can extend life even further, Sonn said, to “four, five, seven, 10” years or more after a metastatic prostate cancer diagnosis.
Dr. Mihir Desai, a urologist with Keck Medicine of USC, said with modern advancements, prostate cancer is just different than other cancers.
“If you find, say, colon cancer or pancreatic cancer or liver cancer are metastasized, then the deterioration is fairly fast and the outcomes are very poor,” he said. But with previously untreated metastatic prostate cancer, “there are many lines of treatment that can, if not cure it, certainly keep it under control for many years, with good quality of life.”
Sandler, who focuses on radiation oncology, said ADT treatment can cause loss of bone density or muscle mass, so Biden will likely be encouraged to stick to a fitness regimen or take medications to counter those effects.
He may also receive radiation to more heavily target specific pockets of cancer, including where it has metastasized to the bone, but that would depend on the number of metastatic sites, Sandler said — with radiation more likely the fewer sites there are.
“If there’s cancer all over the place, then there’s probably no benefit,” he said.
Science
Mobile clinic brings mammograms to women on Skid Row
Sharon Horton stepped through the door of a sky-blue mobile clinic and onto a Skid Row sidewalk. She wore a yellow knit beanie, gold hoop earrings and the relieved grin of a woman who has finally checked a mammogram off her to-do list.
It had been years since her last breast cancer screening procedure. This one, which took place in City of Hope’s Cancer Prevention and Screening mobile clinic, was faster and easier. The staff was kind. The machine that X-rayed her breast was more comfortable than the cold hard contraption she remembered.
Relatively speaking, of course — it was still a mammogram.
“It’s like, OK, let me go already!” Horton, 68, said with a laugh.
The clinic was parked on South San Pedro Street in front of Union Rescue Mission, the nonprofit shelter where Horton resides. Within a week, City of Hope, a cancer research hospital, would share the results with Horton and Dr. Mary Marfisee, the mission’s family medical services director. If the mammogram detected anything of concern, they’d map out a treatment plan from there.
Naureen Sayani, 47, a resident of Union Rescue Mission, left, discusses her medical history with Adriana Galindo, a medical assistant, before getting a mammogram on last week.
(Kayla Bartkowski / Los Angeles Times)
“It’s very important to take care of your health, and you need to get involved in everything that you can to make your life a better life,” said Horton, who is looking forward to a forthcoming move into Section 8 housing.
Horton was one of the first patients of a new women’s health initiative from UCLA’s Homeless Healthcare Collaborative at Union Rescue Mission. Staffed by third-year UCLA Medical School students and led by Marfisee, a UCLA assistant clinical professor of family medicine, the clinic treats mission residents as well as unhoused people living in the surrounding neighborhood.
The new cancer screening project arrives at a time of dire financial pressures on county public health services.
Citing rising costs and a $50-million reduction in federal, state and local grant and contract income, the Los Angeles County Department of Public Health on Feb. 27 ended services at seven of 13 public clinics that provide vaccines, tests and treatment for sexually transmitted diseases and other services to housed and unhoused county residents.
Although Union Rescue Mission’s own funding comes mainly from private sources and is less imperiled by public cuts, the 135-year-old shelter expects the need for its services to rise, Chief Executive Mark Hood said.
Even as unsheltered homelessness declined for the last two years across Los Angeles County, the unsheltered population on Skid Row — long seen as the epicenter of the region’s homelessness crisis — grew 9% in 2024, the most recent year for which census data are available.
For many local women navigating daily concerns over housing, food and personal safety, “their own health is not a priority,” Marfisee said.
Those whose problems have become too serious to ignore face daunting obstacles to care. Marfisee recalled one patient who came to her with a lump in her breast and no identification.
In order to get a mammogram, Marfisee explained, the woman first needed to obtain a birth certificate, and then a state-issued identification card. Then she needed to enroll in Medi-Cal. After that, clinic staff helped her find a primary care physician who could order the imaging test.
Given the barriers to preventative care, homeless women die from breast cancer at nearly twice the rate of securely housed women, a 2019 study found. Marfisee’s own survey of the mission’s female residents found that nearly 90% were not up to date on recommended cancer screenings like mammograms and pap smears, which detect early cervical cancer.
To address this gap, Marfisee — a dogged patient advocate — reached out to City of Hope. The Duarte-based research and treatment center unveiled in March 2024 its first mobile cancer screening clinic, a moving van-sized clinic on wheels that it deploys to food banks and health centers, as well as to companies offering free mammograms as an employee benefit.
“In true Dr. Mary fashion, she saw the vision,” said Jessica Thies, the mobile screening program’s regional nursing director. After working through some logistical hurdles, the mission and City of Hope secured a date for the van’s first visit.
The next challenge was getting the word out to patients. Marfisee and her students walked through the surrounding neighborhood, went cot to cot in the women’s dorm and held two informational sessions in December and January to answer patients’ questions.
At the sessions, the team walked through the basics of who should get a mammogram (women age 40 or older, those with a family history of breast cancer) and the procedure itself. (“Like a tortilla maker?” one woman asked skeptically after hearing a description of the mammography unit.)
The medical students were able to dispel rumors some women had heard: The test doesn’t damage breast tissue, nor do the X-rays increase cancer risk. Others questioned a mammogram’s value: What good was it knowing they had cancer if they couldn’t get follow-up care?
On this latter point, Marfisee is determined not to let patients fall through the cracks.
Thirteen patients received mammograms at the van’s first visit on Wednesday. Within a week, City of Hope will contact patients with their results and send them to Marfisee and her team. She is already mentally mapping the next steps should any patient have a situation that requires a biopsy or further imaging: working with their case manager at the mission, calling in favors, wrangling with any insurance the patient might have.
“It’ll be a good fight,” Marfisee said, as residents in the adjacent cafeteria carried trays of sloppy joes and burgers to their lunch tables. “But we’ll just keep asking for help and get it done.”
Science
Can fire-resistant homes be sexy? ‘You be the judge,’ says this Palisades architect
At first glance, it looks like nothing more than a charming Spanish-revival, quintessentially Californian home — but this Pacific Palisades rebuild is constructed like a tank.
Every exterior wall of the steel-framed home is a foot-thick, fire-resistant barricade. The home is connected to a satellite fire monitoring service. Should a fire start in town, sturdy metal shutters descend to cover every window. An exterior sprinkler system can pump 40,000 gallons of water from giant tanks hidden behind the shrubs in the property’s yard. If the cameras and heat sensors around the house detect danger, the system can envelop the home in over 1,000 gallons of fire retardant and hundreds of gallons of fire-suppressing foam.
Palisades resident and architect Ardie Tavangarian is so confident in his design that he even asked the fire department if they could start a controlled fire on the property to test it all out. (They said no.)
Tavangarian built a career designing multimillion-dollar luxury homes in Los Angeles, but after the Palisades fire destroyed 13 of his works — including his family’s home — he found another calling: how to design a house that can handle what the Santa Monica Mountains throw at it. And how to do it quickly and affordably.
Water tanks form part of a backup water supply in a newly built fire-resistant home in Pacific Palisades.
“Nature is so powerful,” he said, sitting on a couch in the new house, which he built for his adult twin daughters. “We are guests living in that environment and expecting, ‘Oh, nature is going to be really kind to me.’ No, it’s not. It does what it’s supposed to do.”
Tavangarian watched the Jan. 1 Lachman fire from his property not far from here; a week later that fire rekindled, grew into the Palisades fire, and burned through his house. But the painful details of the fire — the missteps of the fire department, the empty reservoir — didn’t matter when it came to deciding how to rebuild, he said. The reality is, many fires have burned in these mountains. Many more will.
A sprinkler on the roof is part of a house-wide sprinkler system.
For the architect, who has spent much of his 45-year career designing for luxury, hardening a home against wildfire has brought a new kind of luxury to his homes: peace of mind.
It’s a sentiment that resonates with fire survivors: Tavangarian says he’s received considerable interest from other property owners in the Palisades looking to rebuild their houses.
The metal shutters and advanced outdoor sprinkler system are the flashiest parts of Tavangarian’s home hardening project, and the efficacy of these adaptations is still up for debate. Because the measures have not yet been widely adopted, there are few studies exploring how much or little they protect homes in real-world fires.
Architect Ardie Tavangarian inside the house he designed.
Anecdotal evidence has indicated the effectiveness of sprinklers can vary significantly based on the setup and the conditions during the fire. Extreme wind, for example, can make them less effective. Lab studies have generally found shutters can reduce the risk of windows shattering.
These measures aren’t cheap, either. Sprinkler systems can cost north of $100,000, for example. However, Tavangarian said when all was said and done, the home he built for his daughters cost around $700 per square foot — less than what Palisades residents said they expected to pay, but more than what Altadena residents expected for their rebuilds.
Tavangarian also hopes to see insurers increasingly consider the home-hardening measures property owners take when writing policies, which he said could potentially offset the extra cost in a decade or less. As he explored getting insurance for the new home, one insurer quoted him $80,000 a year. After he convinced the company to visit the property, it lowered the quote to just $13,000, he said.
The house includes metal heat shields that can drop down if a fire approaches.
The home also has essentially all of the other less flashy — but much cheaper and well-proven — home hardening measures recommended by fire professionals: The underside of the roof’s overhang is closed off — a common place embers enter a home. The roof, where burning embers can accumulate, is made of fire-resistant material. The windows, vulnerable to shattering in extreme heat, are made of a toughened glass. There is virtually no vegetation within the first five feet of the home.
When asked if he felt he had compromised on design, comfort or aesthetics for the extra protection — one of the many concerns Californians have with the state’s draft “Zone Zero” requirements that may significantly limit vegetation within five feet of a home — Tavangarian simply said, “You be the judge.”
Science
Commentary: My toothache led to a painful discovery: The dental care system is full of cavities as you age
I had a nagging toothache recently, and it led to an even more painful revelation.
If you X-rayed the state of oral health care in the United States, particularly for people 65 and older, the picture would be full of cavities.
“It’s probably worse than you can even imagine,” said Elizabeth Mertz, a UC San Francisco professor and Healthforce Center researcher who studies barriers to dental care for seniors.
Mertz once referred to the snaggletoothed, gap-filled oral health care system — which isn’t really a system at all — as “a mess.”
But let me get back to my toothache, while I reach for some painkiller. It had been bothering me for a couple of weeks, so I went to see my dentist, hoping for the best and preparing for the worst, having had two extractions in less than two years.
Let’s make it a trifecta.
My dentist said a molar needed to be yanked because of a cellular breakdown called resorption, and a periodontist in his office recommended a bone graft and probably an implant. The whole process would take several months and cost roughly the price of a swell vacation.
I’m lucky to have a great dentist and dental coverage through my employer, but as anyone with a private plan knows, dental insurance can barely be called insurance. It’s fine for cleanings and basic preventive routines. But for more complicated and expensive procedures — which multiply as you age — you can be on the hook for half the cost, if you’re covered at all, with annual payout caps in the $1,500 range.
“The No. 1 reason for delayed dental care,” said Mertz, “is out-of-pocket costs.”
So I wondered if cost-wise, it would be better to dump my medical and dental coverage and switch to a Medicare plan that costs extra — Medicare Advantage — but includes dental care options. Almost in unison, my two dentists advised against that because Medicare supplemental plans can be so limited.
Sorting it all out can be confusing and time-consuming, and nobody warns you in advance that aging itself is a job, the benefits are lousy, and the specialty care you’ll need most — dental, vision, hearing and long-term care — are not covered in the basic package. It’s as if Medicare was designed by pranksters, and we’re paying the price now as the percentage of the 65-and-up population explodes.
So what are people supposed to do as they get older and their teeth get looser?
A retired friend told me that she and her husband don’t have dental insurance because it costs too much and covers too little, and it turns out they’re not alone. By some estimates, half of U.S. residents 65 and older have no dental insurance.
That’s actually not a bad option, said Mertz, given the cost of insurance premiums and co-pays, along with the caps. And even if you’ve got insurance, a lot of dentists don’t accept it because the reimbursements have stagnated as their costs have spiked.
But without insurance, a lot of people simply don’t go to the dentist until they have to, and that can be dangerous.
“Dental problems are very clearly associated with diabetes,” as well as heart problems and other health issues, said Paul Glassman, associate dean of the California Northstate University dentistry school.
There is one other option, and Mertz referred to it as dental tourism, saying that Mexico and Costa Rica are popular destinations for U.S. residents.
“You can get a week’s vacation and dental work and still come out ahead of what you’d be paying in the U.S.,” she said.
Tijuana dentist Dr. Oscar Ceballos told me that roughly 80% of his patients are from north of the border, and come from as far away as Florida, Wisconsin and Alaska. He has patients in their 80s and 90s who have been returning for years because in the U.S. their insurance was expensive, the coverage was limited and out-of-pocket expenses were unaffordable.
“For example, a dental implant in California is around $3,000-$5,000,” Ceballos said. At his office, depending on the specifics, the same service “is like $1,500 to $2,500.” The cost is lower because personnel, office rent and other overhead costs are cheaper than in the U.S., Ceballos said.
As we spoke by phone, Ceballos peeked into his waiting room and said three patients were from the U.S. He handed his cellphone to one of them, San Diegan John Lane, who said he’s been going south of the border for nine years.
“The primary reason is the quality of the care,” said Lane, who told me he refers to himself as 39, “with almost 40 years of additional” time on the clock.
Ceballos is “conscientious and he has facilities that are as clean and sterile and as medically up to date as anything you’d find in the U.S.,” said Lane, who had driven his wife down from San Diego for a new crown.
“The cost is 50% less than what it would be in the U.S.,” said Lane, and sometimes the savings is even greater than that.
Come this summer, Lane may be seeing even more Californians in Ceballos’ waiting room.
“Proposed funding cuts to the Medi-Cal Dental program would have devastating impacts on our state’s most vulnerable residents,” said dentist Robert Hanlon, president of the California Dental Assn.
Dental student Somkene Okwuego smiles after completing her work on patient Jimmy Stewart, 83, who receives affordable dental work at the Ostrow School of Dentistry of USC on the USC campus in Los Angeles on February 26, 2026.
(Genaro Molina / Los Angeles Times)
Under Proposition 56’s tobacco tax in 2016, supplemental reimbursements to dentists have been in place, but those increases could be wiped out under a budget-cutting proposal. Only about 40% of the state’s dentists accept Medi-Cal payments as it is, and Hanlon told me a CDA survey indicates that half would stop accepting Medi-Cal patients and many others will accept fewer patients.
“It’s appalling that when the cost of providing healthcare is at an all-time high, the state is considering cutting program funding back to 1990s levels,” Hanlon said. “These cuts … will force patients to forgo or delay basic dental care, driving completely preventable emergencies into already overcrowded emergency departments.”
Somkene Okwuego, who as a child in South L.A. was occasionally a patient at USC’s Herman Ostrow School of Dentistry clinic, will graduate from the school in just a few months.
I first wrote about Okwuego three years ago, after she got an undergrad degree in gerontology, and she told me a few days ago that many of her dental patients are elderly and have Medi-Cal or no insurance at all. She has also worked at a Skid Row dental clinic, and plans after graduation to work at a clinic where dental care is free or discounted.
Okwuego said “fixing the smiles” of her patients is a privilege and boosts their self-image, which can help “when they’re trying to get jobs.” When I dropped by to see her Thursday, she was with 83-year-old patient Jimmy Stewart.
Stewart, an Army veteran, told me he had trouble getting dental care at the VA and had gone years without seeing a dentist before a friend recommended the Ostrow clinic. He said he’s had extractions and top-quality restorative care at USC, with the work covered by his Medi-Cal insurance.
I told Stewart there could be some Medi-Cal cuts in the works this summer.
“I’d be screwed,” he said.
Him and a lot of other people.
steve.lopez@latimes.com
-
World6 days agoExclusive: DeepSeek withholds latest AI model from US chipmakers including Nvidia, sources say
-
Massachusetts6 days agoMother and daughter injured in Taunton house explosion
-
Denver, CO6 days ago10 acres charred, 5 injured in Thornton grass fire, evacuation orders lifted
-
Louisiana1 week agoWildfire near Gum Swamp Road in Livingston Parish now under control; more than 200 acres burned
-
Oregon4 days ago2026 OSAA Oregon Wrestling State Championship Results And Brackets – FloWrestling
-
Florida3 days agoFlorida man rescued after being stuck in shoulder-deep mud for days
-
Technology1 week agoArturia’s FX Collection 6 adds two new effects and a $99 intro version
-
News1 week agoVideo: How Lunar New Year Traditions Take Root Across America