World
How a study on hormonal contraception and breast cancer was distorted
As misinformation about women’s health spreads faster than ever, doctors say new research on the risks of hormonal birth control underscores the challenge of communicating nuance in the social media age.
The study, which was conducted in Sweden and tracked more than 2 million teenage girls and women less than age 50 for more than a decade, found that hormonal contraception remains safe overall, but also found small differences in breast cancer risk based on the hormones used in the formulation.
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In addition, the researchers observed a small, short-term rise in breast cancer diagnoses among current or recent users. Those findings are consistent with prior large studies, including a 2017 Danish registry analysis and a 2023 meta-analysis.
It was published online on October 30 in JAMA Oncology.
Doctors say these study results won’t change how they advise patients and that women should not stop using their birth control.
Still, TikTok is flooded with factually incomplete warnings that contraceptives cause cancer and are as dangerous as smoking. Reproductive health advocates warn that studies like this can easily be taken out of context online and be reduced to a single alarming number.
Case in point: The study reported that women who had used hormonal birth control had about a 24 percent higher rate of breast cancer than women who hadn’t. But because breast cancer is still uncommon in younger women, that works out to an increase from roughly 54 to 67 breast cancer cases per 100,000 women per year – about 13 extra cases per 100,000 women, or about one extra case per 7,800 users of hormonal contraceptives per year.
Co-authors Asa Johansson and Fatemeh Hadizadeh, epidemiologists at Uppsala University, said the rise is modest and short-term, with risk highest during current use and fading within five to 10 years after stopping.
Rachel Fey, interim co-CEO of Power to Decide – a group whose mission is to provide accurate information on sexual health and contraceptive methods – said that kind of nuance is exactly what tends to disappear on social media.
“I get really angry at this because it’s designed to scare people like me away from birth control, which has made my life so much better in so many ways,” she said. “It’s really frustrating … especially when it’s given without context. And then in this era of social media, it can just take off without anybody who knows what they’re talking about providing that context.”
The researchers also found the risk was slightly higher with certain progestins such as desogestrel – found in combined oral contraceptives like Cyred EQ, Reclipsen, Azurette, and Pimtrea – but did not increase with others, such as medroxyprogesterone acetate injections, sold under the brand name Depo‑Provera.
How to interpret the findings
Some experts say the results should be viewed with care because the study counted both invasive breast cancers and early, noninvasive lesions known as in situ tumours, growths that may never become life-threatening. Including these precancerous cases could make the overall risk of clinically significant disease appear higher than it is.
“A substantial proportion of the ‘cases’ would never have progressed to invasive breast cancer,” said Lina S Morch, a senior researcher and team leader at the Danish Cancer Institute. Morch was not associated with the Swedish study. She added that experts should wait for more data separating early-stage and advanced cancers before making new rules or warnings about specific hormones.
The doctor-patient conversation
Even as scientists debate how to interpret the finer points of the data, physicians emphasise that for most patients, the study reinforces what they already discuss in the exam room: That hormonal birth control is broadly safe, and decisions should be tailored to each woman’s needs and values.
Katharine White, chief of Obstetrics and Gynaecology at Boston Medical Center, said this study won’t change how she talks to her patients.
“When counselling patients about their contraceptive options, I focus on their past experiences with birth control, their medical history, and what’s important to them about their birth control method and pregnancy planning (if applicable),” White wrote in an email. “Side effects and risks of methods are already a key part of my counselling about both hormonal and non-hormonal methods.”
Other doctors noted there are other contraceptive options.
Eleanor Bimla Schwarz, chief of General Internal Medicine at Zuckerberg San Francisco General Hospital, said, “For those who prefer hormone-free contraception, the copper IUD offers safe, convenient, highly effective contraception for over a decade after placement, and is rapidly reversible when pregnancy is desired,” referring to a type of long-acting intrauterine device.
Mary Rosser, director of Integrated Women’s Health at Columbia University Irving Medical Center, said this was a large, high-quality study that looked at many types of hormones over many years. But she added that doctors shouldn’t change their advice yet.
Johansson and Hadizadeh stressed that the results should guide shared decision-making, not cause alarm. “It may be reasonable to consider formulations associated with lower observed risk in our data,” they said. They noted that products containing medroxyprogesterone acetate, drospirenone, or levonorgestrel were linked to lower risk, while long-term use of desogestrel-only contraceptives might be best avoided when other options fit.
Keeping the risk in perspective
Hormonal birth control provides many health benefits beyond pregnancy prevention. It can lighten heavy periods, ease pain from endometriosis, and lower the risk of ovarian and uterine cancers for years after stopping. Morch noted that even small risks are worth discussing, but said decisions should be guided by women’s “values and preferences”.
White said it’s important to see the big picture. “The risk of an unintended pregnancy is 85 percent for people who do not use contraception – so any risks of birth control need to be weighed against the risk of an unexpected pregnancy,” she wrote.
KFF Health News is a national newsroom that partners with PolitiFact and produces in-depth journalism about health issues.
World
A look at some of the contenders to be Iran’s supreme leader after the killing of Khamenei
Iran’s leaders are scrambling to replace Supreme Leader Ayatollah Ali Khamenei, who ruled the country for 37 years before he was killed in the surprise U.S. and Israeli bombardment.
It’s only the second time since the 1979 Islamic Revolution that a new supreme leader is being chosen. Potential candidates range from hard-liners committed to confrontation with the West to reformists who seek diplomatic engagement.
The supreme leader has the final say on all major decisions, including war, peace and the country’s disputed nuclear program.
In the meantime, a provisional governing council composed of President Masoud Pezeshkian, hard-line judiciary chief Gholamhossein Mohseni Ejei and senior Shiite cleric Ayatollah Ali Reza Arafi is guiding the country through its biggest crisis in decades. Foreign Minister Abbas Araghchi said Sunday that a new supreme leader would be chosen early this week.
The supreme leader is appointed by an 88-member panel called the Assembly of Experts, who by law are supposed to quickly name a successor. The panel consists of Shiite clerics who are popularly elected after their candidacies are approved by the Guardian Council, Iran’s constitutional watchdog.
Khamenei had major influence over both clerical bodies, making it unlikely the next leader will mark a radical departure.
Here are the top contenders.
Mojtaba Khamenei
The son of Khamenei, a mid-level Shiite cleric, is widely considered a potential successor. He has strong ties to Iran’s paramilitary Revolutionary Guard but has never held office. His selection could prove awkward, as the Islamic Republic has long criticized hereditary rule and cast itself as a more just alternative.
Ayatollah Ali Reza Arafi
Arafi is a member of the provisional government council. The senior Shiite cleric was handpicked by Khamenei to be a member of the Guardian Council in 2019, and three years later he was elected to the Assembly of Experts. He leads a network of seminaries.
Hassan Rouhani
Rouhani, a relative moderate, was president of Iran from 2013 to 2021 and reached the landmark nuclear agreement with the Obama administration that U.S. President Donald Trump scrapped during his first term. Rouhani served on the Assembly of Experts until 2024, when he said he was disqualified from running for reelection. Rouhani criticized it as an infringement on Iranians’ political participation.
Hassan Khomeini
Khomeini is the most prominent grandson of the founder of the Islamic Republic, Ayatollah Ruhollah Khomeini. He is also seen as a relative moderate, but has never held government office. He currently works at his grandfather’s mausoleum in Tehran.
Ayatollah Mohammed Mehdi Mirbagheri
Mirbagheri is a senior cleric popular with hard-liners who serves on the Assembly of Experts.
He was close to the late Ayatollah Mohammad Taghi Mesbah Yazdi, a fellow hard-liner who wrote that Iran should not deprive itself of the right to produce “special weapons,” a veiled reference to nuclear arms.
During the COVID-19 pandemic, Mirbagheri denounced the closure of schools as a “conspiracy.”
He is currently the head of the Islamic Cultural Center in Qom, the main center for Islamic teaching in Iran.
World
US cleared to use British bases for limited strikes on Iranian missile capabilities
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The U.S. has been cleared to use British bases for limited strikes on Iran’s missile capabilities after Prime Minister Keir Starmer signed off on the plan, and while U.K. Defense Secretary John Healey stated on Sunday Britain had “stepped up alongside the Americans.”
“The only way to stop the threat is to destroy the missiles at source, in their storage depots or the launchers which are used to fire the missiles,” Starmer confirmed in a recorded statement to the nation.
“The U.S. has requested permission to use British bases for that specific and limited defensive purpose,” he said. “We have taken the decision to accept this request.”
The decision came amid escalation across the Middle East in the wake of U.S. and Israeli strikes on Iran and Tehran’s retaliatory missile and drone attacks, raising fears of a broader regional conflict.
British Prime Minister Keir Starmer signed off on a plan to use British bases for limited strikes on Iranian missile capabilities. (Kin Cheung / POOL / AFP via Getty Images)
On Feb. 28, in the wake of Operation Epic Fury, Starmer confirmed British planes “are in the sky today” across the Middle East “as part of coordinated regional defensive operations to protect our people, our interests and our allies.”
Healey went on to disclose Sunday that two Iranian missiles were fired in the direction of Cyprus, where Britain maintains key sovereign base areas.
The Royal Air Force confirmed that Typhoon jets operating from Qatar as part of the joint U.K.-Qatar Typhoon Squadron successfully intercepted an Iranian drone heading toward Qatar.
About 300 British personnel are stationed at a naval facility in Bahrain, where Iranian missiles and drones struck nearby areas.
“We’re taking down the drones that are menacing either our bases, our people or our allies,” Healey told “Sunday Morning with Trevor Phillips” on Sky. “We’ve stepped up alongside the Americans. We’ve stepped up our defensive forces in the Middle East. We’re flying those sorties.”
ISRAEL’S LARGEST EVER MILITARY FLYOVER HAMMERS IRANIAN MILITARY TARGETS
British Defense Secretary John Healey stressed that the U.K. had “no part” in the American-Israeli strikes on Iran. (Peter Nicholls/Pool via Reuters)
Healey also made sure to stress that the U.K. had “no part” in the U.S. and Israeli strikes on Iran and insisted all British actions were defensive. “All our actions are about defending U.K. interests and defending U.K. allies,” he said.
When asked if the U.K. would join the U.S. in offensive action, Healey said, “I’m not going to speculate,” according to Sky News.
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Downing Street also confirmed Feb. 28 that Starmer and President Donald Trump had spoken by phone about the “situation in the Middle East,” the BBC reported.
Fox News Digital has reached out to Downing Street for comment.
World
Pakistan calls troops, orders 3-day curfew as 24 killed in pro-Iran rallies
Army deployed and some areas in northern Gilgit-Baltistan region put under curfew after deadly violence over Khamenei’s killing.
Published On 2 Mar 2026
Pakistan has called in the military and imposed a three-day curfew in some areas following deadly protests over the killing of Iran’s Supreme Leader Ayatollah Ali Khamenei in a joint United States-Israeli attack on Saturday.
At least 24 people were killed and dozens injured in clashes between protesters and security forces across the country on Sunday, prompting authorities to tighten security around the US embassy and consulates.
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The curfew was imposed before dawn Monday in the districts of Gilgit, Skurdu, and Shigar in the northern Gilgit-Baltistan region, where at least 12 protesters and one security officer were killed and dozens of others wounded during confrontations, according to an official statement.
Of those, seven were killed in Gilgit, a rescue official said, while six others died in Skardu, a doctor told AFP news agency on Monday.
Thousands of demonstrators on Sunday attacked the offices of the United Nations Military Observer Group in India and Pakistan (UNMOGIP), which monitors the ceasefire along the disputed Himalayan region of Kashmir, and the UN Development Programme in Skardu city.
Protesters also burned a police station and damaged a school and the offices of a local charity in Gilgit, according to officials.
UN spokesman Stephane Dujarric on Monday said protesters became violent near the UNMOGIP Field Station, which was vandalised.
“The safety and security of UN personnel and premises throughout the region remain our top priority, and we continue to closely monitor the situation,” Dujarric said.
Shabir Mir, a Gilgit-Baltistan government spokesman, said the situation was under control and that the curfew would remain in place until Wednesday. Police chief Akbar Nasir Khan urged residents to stay indoors, citing “deteriorating law and order conditions”.
In the southern port city of Karachi, the country’s commercial hub, 10 people were killed and more than 60 injured during a protest outside the US consulate.
Two additional protesters were killed in the capital, Islamabad, while heading towards the US embassy.
Pakistani authorities have beefed up security at US diplomatic missions across the country, including around the US consulate building in Peshawar, to avoid any further violence.
The US embassy and its consulates in Karachi and Lahore cancelled visa appointments and American Citizen Services on Monday, citing security concerns.
The federal government warned that the situation could further deteriorate amid large-scale demonstrations condemning Khamenei’s killing on Saturday.
Tehran has responded with a series of drone and missile attacks targeting Israel and US assets in several Gulf countries.
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