The Margin: Why comparing blood clot risks from COVID-19 vaccines and birth control pills doesn’t work

Among a many renouned comparisons has been a heightened risk of clots that women holding hormonal birth control pills face. And this, in turn, has led some people to doubt how many a medical village cares about women. The many common complaint: that a JJ poke was paused over a one in a million risk of critical blood clots for a ubiquitous population, nonetheless women have been speedy to use verbal contraceptives for decades even yet 1 in 1,000 rise blood clots — which, it should be noted, is still rare.  

But women’s health experts told MarketWatch that this isn’t a satisfactory comparison for a integrate of reasons. First, we’re articulate about opposite forms of clots here. 

Dr. Jen Villavicencio, a associate with a American College of Obstetricians and Gynecologists (ACOG), told MarketWatch in a matter that it is “not appropriate” to review a risk of clotting compared with a Johnson Johnson COVID vaccine with a risk of clotting among some hormonal birth control methods. “The clotting syndrome that is now being investigated by a FDA and a CDC is expected opposite from a form of blood clotting gifted with birth control,” she said.

Don’t miss: Johnson Johnson vaccine pause: What to know if we got or scheduled a shot

Indeed, supervision health officials are questioning a form of blood clot called a intelligent venous sinus thrombosis (CVST) among a JJ recipients. These clots shaped in a removal veins of a brain, total with a low platelet count, radically causing a stroke. Hormonal birth control pills, on a other hand, lift a risk of blood clots in a leg that can mangle off and transport to a lung, causing a pulmonary embolism that blocks blood upsurge to partial of a lung. The latter clots can be treated with anticoagulants, while a JJ clots cannot. 

What’s more, there are many opposite personal factors that can lift or revoke a risk of building a blood clot, such as: a family story of clots; high blood pressure; obesity; pregnancy; new surgery; or recently pang a fracture. 

“Each one of us has opposite risk factors for a same medical intervention, either it’s a Johnson Johnson vaccine or either it’s holding a birth control pill,” Dr. Gloria Bachmann, an OB-GYN and executive of a Women’s Health Institute during Rutgers, told MarketWatch. “And there are advantages for both, and there are risks for both, and that’s where one has to weigh a risk of this intervention, and what would be a risks of removing COVID.” 


“The biggest risk during a impulse is a COVID virus, not a COVID vaccine.”


— Dr. Arthur Caplan

Plus, women on a tablet are done wakeful of a risks beforehand, records Dr. Arthur Caplan, executive of NYU Langone’s Division of Medical Ethics. “Some women have suggested maybe people are indifferent to women’s health. we don’t see it that way,” he said. “Women I’ve famous on birth control pills are good wakeful of a risk of clots. People assume a risk, and afterwards confirm they’re gonna do it.” 

So while it might be useful to get people to stop panicking about a JJ pause, or reports of singular blood clots among AstraZeneca
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-0.27%

vaccine recipients, by display usually how many other drugs and personal behaviors could be some-more expected to means clots, directly comparing a rate of blood clots from birth control with a rate among recipients of COVID vaccines doesn’t unequivocally work. “Plus, opposite birth control pills have opposite amounts of estrogen and progesterone, and lift opposite risks of blood clots, so it’s not as elementary as creation a tellurian statement,” pronounced Bachmann.

Related: The expectancy of perfection: Risk of blood clot from Johnson Johnson COVID-19 vaccine is 0.00009%

But it does resurface a critical theme of what’s deliberate an excusable risk in medicine — or in anything, unequivocally — and a risk-benefit research any one of us creates when we confirm to take a remedy to provide an ailment notwithstanding a probable side effects. And a scholarship shows that a advantages of removing vaccinated opposite COVID transcend a tiny risk of blood clots for many people. And that is identical to holding hormonal birth control pills. Bachmann records that women on birth control suffer a reduced risk of ovarian cancer, fewer anemia problems, some-more unchanging periods, as good as a impediment of neglected pregnancies. (Pregnancy indeed poses an even larger risk of blood clots than birth control pills, she added.)

In a box of COVID-19, a pathogen has putrescent some-more than 31.5 million Americans and killed some-more 565,695. Health officials are questioning 6 cases of critical blood clotting, all women, who perceived a JJ vaccine, including one who died.

What’s more, some 30% of COVID-19 survivors have reported determined symptoms like fatigue, mind haze and problem respirating still plaguing them 9 months later. Plus, a new investigate from researchers during Oxford University has found that people who agreement COVID-19 are during distant aloft risk of building blood clots than people who accept COVID vaccines. In fact, a risk of intelligent venous thrombosis after a COVID-19 infection is about 100 times larger than normal, and several times aloft than after coronavirus vaccination or after a flu.

Read more: Getting COVID creates distant aloft risk of singular blood clots than vaccines, Oxford investigate finds

Meanwhile, 99.992% of entirely vaccinated people have avoided removing COVID, CDC information shows.

The bottom line is that a fallout from throwing COVID right now distant outweighs a tiny risk of probable side effects from any of a vaccines that have been authorized for puncture use authorisation in a U.S. Problem is, people aren’t good during “translating risk into action,” as Dr. Andrew Pavia, a George and Esther Gross Presidential Professor during a University of Utah, recently told MarketWatch. Which could explain some opposing behavior. 

“I had someone come adult to me currently who said, ‘I won’t take that vaccine since it’s dangerous’ — and they fume dual packs [of cigarettes] a day!” Caplan said. Meanwhile, smoking cigarettes can boost a risk of both building blood clots and pang critical COVID-19 illness. 

He’s among a doctors who fear that pausing JJ will boost vaccine hesitation in a U.S. In fact, a recent poll conducted by The Economist and YouGov found that usually 37% of respondents consider that JJ’s vaccine is protected after a pause, compared with 52% who believed it was protected before a pause.

“I consider a messaging should have been, ‘While we inspect a probable organisation [with blood clots] that is critical though rare, keep vaccinating,’” he said. “I wouldn’t stop vaccinating myself or anybody in my family since of this probable association. we would not lift divided from a Johnson Johnson vaccine due to a reduction than one in a million risk of death.” 

“The biggest risk during a impulse is a COVID virus, not a COVID vaccine,” Caplan added.

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