2020 Democratic presidential candidates want to end ban on gay blood donors
FDA guidelines say men can't donate blood if they've had sex with another man in the past 12 months.
- At least seven 2020 Democratic presidential campaigns have called for an end to the FDA's guidelines, as reported by The Independent.
- It would be the first year that the issue has been a focus of presidential candidates.
- The American Public Health Association said the FDA's ban isn't based on science.
In 1983, as the HIV and AIDS was ramping up in the U.S., the Food and Drug Administration banned blood donations from men who'd ever had sex with other men. The policy remains active, though in 2015 the FDA narrowed its ban to apply only to men who've had sex with another man in the past year.
Soon, the ban could be lifted altogether.
A growing number of 2020 Democratic presidential candidates are calling to end the long-standing policy, which gay-rights advocacy groups say promotes homophobia and is no longer necessary, thanks to modern disease-screening techniques. Most harmfully, the ban could be preventing healthy blood from reaching patients who need it, when blood shortages are already alarmingly common.
"The one-year deferral period for male blood donors who identify as gay and bisexual has nothing to do with science or medicine and everything to do with outdated stigmas against the LGBTQ community," a spokesperson for Beto O'Rourke's campaign told The Independent, which received similar responses from the campaigns of Elizabeth Warren, Bernie Sanders, Kamala Harris, Kirsten Gillibrand, John Delaney, and Marianne Williamson.
"Our blood screening policies must be based on 21st century medical evidence, not outdated biases about which populations carry more risk of HIV transmission. These policies serve no one and will only limit access to life-saving blood donations."
The ban hasn't been a key issue in past elections, said William McColl, director of health policy with the advocacy group AIDs United.
"I'm pleased to hear that they're talking about it. I think it shows that we've come a really long way in a short period of time," McColl told The Independent. "This discussion wasn't happening even 10 years ago, for sure."
House Democrats tried to lift the FDA's current policy in 2016, but the legislation never passed.
Is the FDA's current policy based on science?
Not really, according to Georges C. Benjamin, the executive director of the American Public Health Association.
"[The FDA's 12-month policy on gay donors] continues to prevent low-risk individuals from contributing to our blood supply and maintains discriminatory practices based on outdated stereotypes," he wrote in comments submitted to the FDA in 2015. "Instead, we strongly urge FDA to issue guidance that is grounded in science to ensure a safe and robust blood supply."
Benjamin noted that current screening technology can identify HIV in blood donations within 11 days, and that the odds of an infected sample making it past screening is about 1 in 3.1 million. The Williams Institute, a think-tank at UCLA School of Law, estimates that eliminating the ban would add 615,300 pints to the national blood supply each year, an increase of about 4 percent.
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- The study builds on a 19th-century discovery by physicist Edward Hall.
- The research promises to lead to a new generation of semiconductor materials and devices.
Credit: Gunawan/Nature magazine
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The images and our best computer models don't agree.
A trio of intriguing galaxy clusters<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDQzNDA0OS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYxNTkzNzUyOH0.0IRzkzvKsmPEHV-v1dqM1JIPhgE2W-UHx0COuB0qQnA/img.jpg?width=980" id="d69be" class="rm-shortcode" data-rm-shortcode-id="2d2664d9174369e0a06540cb3a3a9079" data-rm-shortcode-name="rebelmouse-image" />
The three galaxy clusters imaged for the study
Mapping dark matter<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="d904b585c806752f261e1215014691a6"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/fO0jO_a9uLA?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span><p>The assumption has been that the greater the lensing effect, the higher the concentration of dark matter.</p><p>As scientists analyzed the clusters' large-scale lensing — the massive arc and elongation visual effects produced by dark matter — they noticed areas of smaller-scale lensing within that larger distortion. The scientists interpret these as concentrations of dark matter within individual galaxies inside the clusters.</p><p>The researchers used spectrographic data from the VLT to determine the mass of these smaller lenses. <a href="https://www.oas.inaf.it/en/user/pietro.bergamini/" target="_blank" rel="noopener noreferrer">Pietro Bergamini</a> of the INAF-Observatory of Astrophysics and Space Science in Bologna, Italy explains, "The speed of the stars gave us an estimate of each individual galaxy's mass, including the amount of dark matter." The leader of the spectrographic aspect of the study was <a href="http://docente.unife.it/docenti-en/piero.rosati1/curriculum?set_language=en" target="_blank">Piero Rosati</a> of the Università degli Studi di Ferrara, Italy who recalls, "the data from Hubble and the VLT provided excellent synergy. We were able to associate the galaxies with each cluster and estimate their distances." </p><p>This work allowed the team to develop a thoroughly calibrated, high-resolution map of dark matter concentrations throughout the three clusters.</p>
But the models say...<p>However, when the researchers compared their map to the concentrations of dark matter computer models predicted for galaxies bearing the same general characteristics, something was <em>way</em> off. Some small-scale areas of the map had 10 times the amount of lensing — and presumably 10 times the amount of dark matter — than the model predicted.</p><p>"The results of these analyses further demonstrate how observations and numerical simulations go hand in hand," notes one team member, <a href="https://nena12276.wixsite.com/elenarasia" target="_blank">Elena Rasia</a> of the INAF-Astronomical Observatory of Trieste, Italy. Another, <a href="http://adlibitum.oats.inaf.it/borgani/" target="_blank" rel="noopener noreferrer">Stefano Borgani</a> of the Università degli Studi di Trieste, Italy, adds that "with advanced cosmological simulations, we can match the quality of observations analyzed in our paper, permitting detailed comparisons like never before."</p><p>"We have done a lot of testing of the data in this study," Meneghetti says, "and we are sure that this mismatch indicates that some physical ingredient is missing either from the simulations or from our understanding of the nature of dark matter." <a href="https://physics.yale.edu/people/priyamvada-natarajan" target="_blank">Priyamvada Natarajan</a> of Yale University in Connecticut agrees: "There's a feature of the real Universe that we are simply not capturing in our current theoretical models."</p><p>Given that any theory in science lasts only until a better one comes along, Natarajan views the discrepancy as an opportunity, saying, "this could signal a gap in our current understanding of the nature of dark matter and its properties, as these exquisite data have permitted us to probe the detailed distribution of dark matter on the smallest scales."</p><p>At this point, it's unclear exactly what the conflict signifies. Do these smaller areas have unexpectedly high concentrations of dark matter? Or can dark matter, under certain currently unknown conditions, produce a tenfold increase in lensing beyond what we've been expecting, breaking the assumption that more lensing means more dark matter?</p><p>Obviously, the scientific community has barely begun to understand this mystery.</p>
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