'Upstreamism': Your zip code affects your health as much as genetics
Upstreamism advocate Rishi Manchanda calls us to understand health not as a "personal responsibility" but a "common good."
- Upstreamism tasks health care professionals to combat unhealthy social and cultural influences that exist outside — or upstream — of medical facilities.
- Patients from low-income neighborhoods are most at risk of negative health impacts.
- Thankfully, health care professionals are not alone. Upstreamism is increasingly part of our cultural consciousness.
If you encounter the word "miasma" today, it's probably in reference to the worst level of a popular video game. But as late as the 19th century, medical science treated such "bad air" seriously. Under the purview of miasma theory, doctors believed that epidemics of diseases such as cholera and bubonic plague originated from noxious air wafting from decaying, rotting flesh.
Enter John Snow. Mapping an 1854 outbreak of cholera, Snow discovered that the afflicted shared a common environmental link. They all secured water from a pump on Broad Street in Soho, London. Snow theorized it was the water, not the miasmatic air, that caused the outbreak. He removed the pump's handle, nullified the spread of the disease, and proved his theory accurate.
Because of this, Snow is widely considered the father of epidemiology. Michael J. Dowling, president and CEO of Northwell Health, offers an additional honorific. He cites Snow as a "classic upstreamist," one whose example is important to understanding our struggles with upstreamism today.
What is upstreamism?
Upstreamism is a call for health care professionals to recognize that many of the determinants affecting a patient's health exist outside the medical facility — that is, upstream of it.
A clinician can prescribe medicine or offer advice when the patient is in their practice, but consider how much time the average person spends in a hospital and the like. Very little. Instead, the vast majority of a patient's life is spent upstream, in their environment, where many mental and physical health issues can manifest and potentially worsen.
If a health care professional is to be an upstreamist, they must equip themselves to assess and address these social and cultural determinants together with a patient's symptoms.
Rishi Manchanda, founder of HealthBegins and upstreamism advocate, says that "one's zip code matters more than your genetic code." In fact, he points out, epigenetics shows us that our zip codes can shape our genetic codes.
In his TED talk, Manchanda illustrates upstreamism with an anecdote about a patient named Veronica. Veronica suffered chronic, debilitating headaches. She had visited emergency rooms three times before trying Manchanda's clinic. The previous doctors looked at Veronica's symptoms in isolation, saw nothing wrong, and prescribed standard pain medication.
He measured the same vital signs, got the same results, but asked an additional question: what were her living conditions like? Turns out, her living conditions weren't ideal. Her housing had mold, water leaks, and cockroaches. Manchanda theorized that her condition may be the result of an allergic reaction to the mold, a diagnosis the others missed because they only considered Veronica's symptoms in isolation. They forgot to look upstream.
Swimming against the social current?
Volunteers beautify a park in Bowie, MD, as part of a three-year project to repair low-income neighborhoods in the county. (Photo: Staff Sgt. Alexandre Montes/U.S. Air Force)
Like an actual river, a patient's upstream environment doesn't flow in a straight line. In lieu of springs, streams, headwaters, and tributaries, a patient's constitutional watershed contains their social environment, their physical environment, their economic status, their individual lifestyle, and their access to care.
As a result, people living in low-income neighborhoods face far more negative social and cultural health influences than those living in wealthier areas. Patients from such environments are less likely to have access to pollutant-free water, full-service grocery stores and farmers markets, and parks and playgrounds. The stress of such environments leads to higher rates of depression, unresponsive parenting practices, and even increased rates of mortality.
"If you're living in a very, very good neighborhood, […] you will live years longer than the person who lives in a very, very poor area, in general," Dowling said in an interview. "So if I want to improve your health, I've got to make sure that I have doctors, and nurses, etc., to provide medical care to you. But I've also got to figure out how to work on all of these other things."
Mapping the upstream
The challenges of upstreamism would be daunting to health care professionals if they had to face them alone. However, we are in the midst of social changes that will make upstreamism viable. One of those changes is an always connected world where new information is available quickly.
Going back to Veronica's story, Manchanda didn't solve the problem alone. He connected her with a community health worker, and the partnership paid off. The community worker found mold, a strain Veronica was allergic to. Once her home conditions improved, Veronica's quality of life did as well. Manchanda inadvertently helped one of her sons, too, as his asthma was exacerbated by the same mold.
"If we're all able to do this work, doctors and healthcare systems, payers and all of us together, we'll realize something about health. Health is not just a personal responsibility or phenomenon. Health is a common good," Manchanda said in his TED talk.
Beyond search engines, technology companies are making a big push for health care. The tools and innovations they develop could streamline the mapping of a patient's upstream environment. For example, devices like smartphones and Fitbits may allow patients to generate their own health records, offering doctors a proactive, up-to-date account of a patient's environment. The growing ubiquity of such devices will also allow doctors to perform virtual health visits, giving them easy access to patients and their live-in environment.
Finally, many health care professionals and organizations are heeding the upstreamist call to use their voices to advocate for changes to harmful social influences. As part of the Greater New York Hospital Association, Northwell Health has supported actions to curb gun violence in the United States. They advocate for, among other steps, a renewed ban on assault rifles, enhanced background checks, and permitting the CDC and NIH to conduct research on gun violence.
"[G]un violence isn't just a national tragedy, it's also a public health crisis," writes Dowling in his book Health Care Reboot.
This brings us back to John Snow. If he hadn't looked to the environment, looked upstream, he may have missed a solution that saved people's lives. The problems facing upstreamists today may require solutions more taxing than removing a water pump handle. But through technology and changes in social attitudes, they are manageable and can have a lasting impact on health care.
The number of people with dementia is expected to triple by 2060.
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>
Scientists have found evidence of hot springs near sites where ancient hominids settled, long before the control of fire.
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