Life expectancy, socialism, and the determinants of health

“Socialism,”writes Washington Post columnist Kathleen Parker on February 9, “has always appealed to the young, the cure for which isn’t age but responsibility. This usually comes in the form of taxes and children, both of which involve working and sacrificing for the benefit of others, the extent of which forms the axis upon which all politics turns.” Parker is discussing the brouhaha around comments about the need for women to support Hillary Clinton’s presidential bid, particularly those by Gloria Steinem that young women are supporting Bernie Sanders because, essentially, that’s where the boys are. Her logic seems a little contradictory to me, because socialism is all about being part of a society that we are all in together, where we work and sometimes sacrifice for the benefit of others.

Parker really means that we become more selfish, that the “others” narrows from our whole society to that small group, presumably our nuclear family, for whom we work and sacrifice. Of course, she is only talking about some people. Some people never have children. Others of us realize that there are benefits that we all want as a society – transportation and police and schools and even a social safety net – that makes us more than willing to pay our taxes. And a few people, very wealthy, accumulate much more money than they or their children could ever use and pay very little in taxes. They, to be sure, are big fans of the popular narrative endorsed by Parker: that the rest of us need to buckle down and take care of our kids and not make a fuss and be socialist and threaten their gravy train. And for sure keep paying taxes, so that when they need to be bailed out the government has the funds.

It is a deeply flawed narrative, but it holds a lot of sway, and is used to justify policies that have facilitated the greatest transfer of wealth, from most of us to a few of them, in a century. More and more Americans are on a treadmill, working harder and harder to discharge their responsibilities to their families and pay their taxes, because their real wages are stagnant or decreasing. Our economy increasingly is one where little is manufactured but we all tithe to the kitty (or is it a lion?) of the financial services sector; its “players” compete for that money taken from the rest of us (anyone seen “The Big Short”?) and it bothers them not one bit. That it bothers a lot of young people enough to support Senator Sanders (who Parker says “never outgrew his own socialist-rebellious tendencies”) should make all of us happy and optimistic, since what is happening now is not good for most individuals, their families, America, or the world.

It’s also not good for a lot of people’s health. The New York Times’ Sabrina Tavernise reports on February 12, 2016 that the “Disparity in Life Spans of the Rich and the Poor Is Growing”. “Experts have long known that rich people generally live longer than poor people,” she begins, but how much longer is increasing. This was most recently demonstrated by a study conducted for the Brookings Institute by Barry Bosworth, Gary Burtless, and Kan Zhang (“What growing life expectancy gaps mean for the promise of Social Security”). Men in the bottom 10% of income born in 1920 lived 6 years less than those in the top 10%; for those born in 1950 it will be 14 years. For women the increase is as great, from 4.7 to 13 years, and for women in the bottom 30%, life expectancy has actually decreased. This is not a good trend, and it is not limited to the outliers in the top and bottom deciles. As illustrated by the accompanying graph, the more you make the longer you can expect to live. Tavernise makes clear that this is despite the advances that have occurred in medicine and technology; indeed those have relatively little impact upon longevity or health, despite the amount that we as a society spend upon them; most estimates of the contribution of all medical care to health status are in the 10-15% range. This is, nonetheless, where most of our health expenditures (now over 17% of GDP) are, and of course to the extent that they are of benefit to individuals they are far more available to those who have more money. Per Tavernise: “The Social Security Administration found, for example, that life expectancy for the wealthiest American men at age 60 was just below the rates in Iceland and Japan, two countries where people live the longest. Americans in the bottom quarter of the wage scale, however, ranked much further down — one notch above Poland and the Czech Republic.”

The Times article quotes the usual sources to tell us that lower income people are likely to have more negative health behaviors, like smoking and prescription opioid use (but, somewhat surprisingly, not that much more obesity – 37% in the lowest and 31% in the highest income group). Health behaviors are important; they may be as significant as medical care in determining our health. So is biology, our individual genetics. But even smoking only accounted for a fifth to a third of the difference.

The real causes of the difference in life expectancy are the “social determinants of health” (SDH). These include having a place to live, having enough to eat, having warmth in the winter, living in a neighborhood with lower rates of both interpersonal (muggings, homicide) and institutional (environmental pollution, lack of access to basic resources like stores, transportation, sidewalks) violence. They also include the occupational risks accompanying many lower-income jobs that involve physical labor and the toll it takes on the body (and increase the probability of living with chronic pain and using opioids). The SDH are tied to other risk behaviors, such as smoking. And, since socioeconomic status is highly correlated with that of one’s family of origin, people with higher incomes were likely to be born and raised in families with higher incomes, which confers a lifelong health benefit. Of course, this negative impact of SDH would be expected to be greatest in the lowest socioeconomic groups, which it is, but above them surely people have those basic needs met? Why are they living less long than the really rich?

A big part of the reason is misperception by the well-off, which includes most policymakers, politicians, pundits, and even journalists of how much money people make, and thus how many people are well-off. The median household income in 2014 (US Census Bureau report) was about $53,000. Half the households made less, and half more. The bottom 80% of income earners account for about 50% of all income, with the top 20% having the other 50% and the top 5% over 20%.  An individual with an income of $100,000 is in the top decile on that table, and so it is less surprising that folks making less have some deficit in their health and life expectancy.

From the Timesarticle: “At the heart of the disparity, said Elizabeth H. Bradley, a professor of public health at Yale, are economic and social inequities, ‘and those are things that high-tech medicine cannot fix.’”. I have cited Bradley before (To improve health the US must spend more on social services, December 18, 2011), and her point, that in the US we spend far more on medical care than other social services, is still right on. We spend huge amounts on high-tech and variably effective care that benefits a relatively small number of people (and, disproportionately, those with higher income) and much less than other OECD nations on other social services that actually improve health and life expectancy. Oh, but those countries spending that money are those “social democracies” that Bernie Sanders goes on about. You know, socialist. The ones where people are healthier and live longer.

Now, why would we expect, or want, our young people to “grow out” of the idea that this is a good thing?

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More wealth, more health: what can we do to mitigate disparities?

The Washington Post’s “Wonkblog” reviewed a report by economists discussing “The stunning — and expanding — gap in life expectancy between the rich and the poor” (Max Ehrenfreund, Sept 18, 2015). One focus of the article, which is based on a report from the National Academy of Sciences, is that (in the words of the alternative title of the Wonkblog piece that displays in the URL), “the government is spending more to help rich seniors than poor ones”. A big reason for this is that the greater life expectancy of the more well-to-do means that they collect benefits from Social Security and Medicare for longer. But, of course, the real issue is that there is such a difference in the life expectancy of rich and poor. Ehrenfreund illustrates this with two dramatic graphs:

This is a pretty significant difference. What are the reasons for it? The report (and the article based on it) indicate that while differences in “lifestyle” (smoking and obesity, mainly) account for some of the difference, it is less than 1/3. The study also alludes to the impact of “stress”. This may seem vague, non-specific, or ubiquitous: aren’t we all stressed? Don’t rich people have a lot of stress because wealth is often accompanied by great responsibility? Such interpretations sometimes leads "stress" as a factor in longevity to be discounted by many commentators. But the impact of stress on health is a real thing, and it is well documented. Many people are familiar with the old terms “Type A” and “Type B” personalities, and how being Type A (more stressed) can lead to a greater risk of disease, particularly heart attack. But the real concern is a kind of stress that is more common in poorer people. This is the continuousstress, from worrying about whether you and your family will have enough food to eat and a place to live, whether you will have a job, whether it is safe to walk down the street, whether (especially if you are a young Black man) the police are going to stop you at any moment, that has major negative health effects. The mechanisms through which this occurs are incompletely elucidated, but certainly involve the neuroendocrine system, the release of hormones that prepare the body for “fight or flight” by refocusing blood flow to muscles, increasing heart rate, etc. Such a response is very useful in an emergency, but when it is happening most or all of the time, and the body does not have the time and rest to fully recuperate, it results in real health damage. This hormonal response allows a person to run fast, from an attacker or for sport, for a short time, but if the challenge never stops, the body eventually wears out

This sort of stress on the body may be the “final common pathway” through which many of the negative life situations that poorer people are more likely to find themselves in exact their toll, but there are also other factors. People’s health, and thus their life expectancy, is to a large extent determined by their early childhood experience. The relative income of their families of origin that affects their childhood nutrition and education, their warmth in the winter, and the amount of transmitted stress that their parents felt, is also a big determinant. While this disparity at the start of life is something that can be mitigated, by some, through future success, it can never be completely erased. That is, while rich people from poor backgrounds may have better health later in life than those who stay poorer, they have on average worse health than those who started out wealthy and stayed that way. “Choose your parents wisely,” I tell my medical students, “if they are both long-lived and rich, it bodes well for your future health.” Luckily for them, the majority of medical students come from at least upper-middle-income families.

Another big determinant is education, and many studies show the correlation of higher levels of education with longer life and better health. Of course, education is highly correlated with income, both on the front end (children from higher-income families are more likely to achieve higher educational levels) and on the back end (those children from families of lower socioeconomic status who are successful have usually become so through education). In the US, income is related to education in part because our schools are largely funded by local tax bases, so that wealthier people live in better funded, and educationally better, school districts. People from other countries often have difficulty understanding that we have “good” and “bad” school districts; as one friend said “where I come from all schools are the same! No one would choose where to live based on the quality of the schools!” This concept is so alien to me that I had difficulty understanding them!

In addition, education does not take place only in school. Children from upper-income families are more likely to have educated parents, who not only encourage them to pursue educational success, but read to them and talk to them from the very beginning of their lives. These are also families in which survival needs do not displace the priority of children getting an education. In 1943, the psychologist Abraham Maslow published his hierarchy of needs; survival must come before self-actualization. This was originally conceived of for the individual, but is also true of families and communities. A similar pyramid has been developed to describe the impact of Adverse Childhood Events (ACEs). ACEs are a ways of thinking about the combination of negative impacts including hunger, homelessness, physical abuse, sexual abuse, neighborhood dangerousness, etc., that have been shown to have a lifelong negative impact. In addition to being associated with higher future rates of drug abuse and mental illness, they are associated with higher rates of just about everything bad. The Adverse Childhood Experiences studyconducted by Kaiser Permanente beginning in 1995-97 is the most significant study on this topic. It is ongoing and being replicated in many other countries.

 

Of course, lower income people are exposed to other risks beyond these. People living in “worse” neighborhoods have a greater likelihood of being homicide victims. Those neighborhoods are much more likely to be exposed to environmental pollutants in the air and water and even from the earth (such as toxic waste dumps). Many lower-income people work in more dangerous jobs, especially true in rural areas (farming, ranching, logging, highway construction, etc.) Indeed, the potential for “confounding” results from such exposures was the reason that Michael Marmot and his colleagues did their classic series of studies showing the direct correlation of higher socioeconomic status (class) and better health by examining people who worked for the government in the same offices in London (thus the name “the Whitehall studies”).

Wealthy people have a longer life expectancy than poor people, and wealthy countries have longer life expectancies than poorercountries, and those with wider gaps between the rich and poor have wider gaps in life expectancy; in this regard the US is at greater risk than wealthy nations with smaller gaps. The neat interactive website from Gapminder allows you to track wealth with life expectancy over time since 1800. The GINI index measures the income disparities within countries, and its use allows correlating income inequality with life expectancy; like several other health measures (e.g., infant mortality) life expectancy goes down with increasing inequality even when a country (such as the US) is rich overall.

So yes, our Social Security and Medicare systems mean that those who live longer will have more financial benefit, and that they are more likely to be more well-to-do than those who die younger. In addition, those who are poorer are more likely to live longer with disability. But the real news is that poverty and social deprivation work in many synergistic ways to decrease the health of the poor. This is what we need a coordinated and comprehensive strategy to address.

And the first step is recognizing and acknowledging it.

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