Tag Archives: food

what to eat for your own health and the planet

Walter Willet, Johan Rockstrom, and others have published a long paper on what we should be eating, both for health and sustainability, and how that food ought to be produced.

Scientific targets for a healthy reference diet are based on extensive literature on foods, dietary patterns, and health outcomes. This healthy reference diet largely consists of vegetables, fruits, whole grains, legumes, nuts, and unsaturated oils, includes a low to moderate amount of seafood and poultry, and includes no or a low quantity of red meat, processed meat, added sugar, refined grains, and starchy vegetables.

2018 in Review

Most frightening and/or depressing stories:

  • JANUARY: Cape Town, South Africa looked to be in imminent danger of running out of water. They got lucky, but the question is whether this was a case of serious mismanagement or an early warning sign of water supply risk due to climate change. Probably a case of serious mismanagement of the water supply while ignoring the added risk due to climate change. Longer term, there are serious concerns about snowpack-dependent water supplies serving large urban populations in Asia and western North America.
  • FEBRUARY: Cape Town will probably not be the last major city to run out of water. The other cities at risk mentioned in this article include Sao Paulo, Bangalore, Beijing, Cairo, Jakarta, Moscow, Istanbul, Mexico City, London, Tokyo, and Miami.
  • MARCH: One reason propaganda works is that even knowledgeable people are more likely to believe a statement the more often it is repeated.
  • APRIL: That big California earthquake is still coming.
  • MAY: The idea of a soft landing where absolute dematerialization of the economy reduces our ecological footprint and sidesteps the consequences of climate change through innovation without serious pain may be wishful thinking.
  • JUNE: The Trump administration is proposing to subsidize coal-burning power plants. Meanwhile the long-term economic damage expected from climate change appears to be substantial. For one thing, Hurricanes are slowing down, which  means they can do more damage in any one place. The rate of melting in Antarctic ice sheets is accelerating.
  • JULY: The UN is warning as many as 10 million people in Yemen could face starvation by the end of 2018 due to the military action by Saudi Arabia and the U.S. The U.S. military is involved in combat in at least 8 African countries. And Trump apparently wants to invade Venezuela.
  • AUGUST: Noam Chomsky doesn’t love Trump, but points out that climate change and/or nuclear weapons are still existential threats and that more mainstream leaders and media outlets have failed just as miserably to address them as Trump has. In related news, the climate may be headed for a catastrophic tipping point and while attention is mostly elsewhere, a fundamentalist takeover of Pakistan’s nuclear arsenal is still one of the more serious risks out there.
  • SEPTEMBER: A huge earthquake in the Pacific Northwest could be by far the worst natural disaster ever seen.
  • OCTOBER: The Trump administration has slashed funding to help the U.S. prepare for the next pandemic.
  • NOVEMBER: About half a million people have been killed in Iraq, Afghanistan, and Pakistan since the U.S. invasions starting in 2001. This includes only people killed directly by violence, not disease, hunger, thirst, etc.
  • DECEMBER: Climate change is just bad, and the experts seem to keep revising their estimates from bad to worse. The Fourth National Climate Assessment produced by the U.S. government is not an uplifting publication. In addition to the impacts of droughts, storms, and fires, it casts some doubt on the long-term security of the food supply. An article in Nature was also not uplifting, arguing that climate change is happening faster than expected due to a combination of manmade and natural trends.

Climate change, nuclear weapons, and pandemics. If I go back and look at last year’s post, this list of existential threats is going to be pretty much the same. Add to this the depressing grind of permanent war which magnifies these risks and diverts resources that could be used to deal with them. True, we could say that we got through 2018 without a nuclear detonation, pandemic, or ecological collapse, and under the circumstances we should sit back, count our blessings, and wait for better leadership. And while our leadership is particularly inept at the moment, I think Noam Chomsky has a point that political administration after political administration has failed to solve these problems and this seems unlikely to improve. The earthquake risk is particularly troublesome. Think about the shock we felt over the inept response to Katrina, and now think about how essentially the same thing happened in Puerto Rico, we are not really dealing with it in an acceptable way, and the public and news media have essentially just shrugged it off and moved on. If the hurricanes, floods, fires and droughts just keep hitting harder and more often, and we don’t fully respond to one before the next hits, it could mean a slow downward spiral. And if that means we gradually lose our ability to bounce back fully from small and medium size disasters, a truly huge disaster like an epic earthquake on the west coast might be the one that pushes our society to a breaking point.

Most hopeful stories:

I believe our children are our future…ya ya blahda blahda. It’s a huge cliche, and yet to be hopeful about our world I have to have some hope that future generations can be better system thinkers and problem solvers and ethical actors than recent generations have been. Because despite identifying problems and even potential solutions we are consistently failing to make choices as a society that could divert us from the current failure path. And so I highlighted a few stories above about ideas for better preparing future generations, ranging from traditional school subjects like reading and music, to more innovative ones like meditation and general system theory, and just maybe we should be open to the idea that the right amount of the right drugs can help.

Fossil fuels just might be on their way out, as alternatives start to become economical and public outrage slowly, almost imperceptibly continues to build.

There is real progress in the fight against disease, which alleviates enormous quantities of human suffering. I mention AIDS, diabetes, and Alzheimer’s disease above. We can be happy about that, of course. There are ideas about how to grow more food, which is going to be necessary to avoid enormous quantities of human suffering. Lest anyone think otherwise, my position is that we desperately need to reduce our ecological footprint, but human life is precious and nobody deserves to suffer illness or hunger.

Good street design that lets people get around using mostly their own muscle power. It might not be sexy, but it is one of the keys to physical and mental health, clean air and water, biodiversity, social and economic vibrancy in our cities. Come to think of it, I take that back, it can be sexy if done well.

Good street design and general systems theory – proof that solutions exist and we just don’t recognize or make use of them. Here’s where I want to insert a positive sentence about how 2019 is the year this all changes for the better. Well, sorry, you’ll have to find someone less cynical than me, and/or with much better powers of communication and persuasion than me to get the ball rolling. On the off chance I have persuaded you, and you have communication and/or persuasion super powers, let me know.

Most interesting stories, that were not particularly frightening or hopeful, or perhaps were a mixture of both:

Whatever else happens, technology and accumulation of human knowledge in general march on, of course. Computer, robotics, and surveillence technology march on. The human move into space is much slower and painful than many would have predicted half a century ago, and yet it is proceeding.

I’ll never drop the waterless sanitation thing, no matter how much others make fun of me. It’s going to happen, eventually. I don’t know whether we will colonize Mars or stop defecating in our water supply first, but both will happen.

The gene drive thing is really wild the more I think about it. This means we now have the ability to identify a species or group of species we don’t want to exist, then cause it not to exist in relatively short order. This seems like it could be terrifying in the wrong hands, doesn’t it? I’m not even sure I buy into the idea that rats and mosquitoes have no positive ecological functions at all. Aren’t there bats and birds that rely on mosquitoes as a food source? Okay, I’m really not sure what redeeming features rats have, although I did read a few years ago that in a serious food crunch farming rats would be a much more efficient way of turning very marginal materials into edible protein than chicken.

The universe in a bottle thing is mind blowing if you spend too much time thinking about it. It could just be bottles all the way down. It’s best not to spend too much time thinking about it.

That’s it, Happy 2019!

alzheimer’s disease and insulin resistance

This article in Psychology Today makes a case that there is a very strong link between insulin resistance and Alzheimer’s disease. The bad news, it says, is that the majority of the population is insulin resistant. The good news is that it is something an individual can really do something about. Basically, replace sugar and most processed foods with whole, unprocessed ones. It sounds mostly okay to me except I am really not ready to give up bread any time soon.

November 2018 in Review

Most frightening and/or depressing stories:

  • Coral reefs are expected to decline 70-90% by mid-century.
  • The U.S. stock market is overvalued by about 40% by historic measures, and some economists think a major recession may be looming.
  • About half a million people have been killed in Iraq, Afghanistan, and Pakistan since the U.S. invasions starting in 2001. This includes only people killed directly by violence, not disease, hunger, thirst, etc.

Most hopeful stories:

Most interesting stories, that were not particularly frightening or hopeful, or perhaps were a mixture of both:

  • New tech roundup: People in Sweden are barely using cash at all, and some are paying with microchips embedded in their fingers. New technology may allow screening of multiple airport passengers from 25 feet away with minimal disruption. This is great for airline passengers who are already expecting to be screened intrusively, but of course raises some concerns about potential uses elsewhere in the public realm. Amazon is hiring about 100,000 seasonal workers this year, compared to about 120,000 in past years, and the difference may be explained by automation. There is a new ISO standard for toilets not connected to sewers systems (and not just your grandfather’s septic tank.)
  • A unidentified flying object has been spotted in our solar system, and serious scientists say there is at least a plausible, if very unlikely, chance that it is an alien spacecraft.
  • People are taking micro doses of LSD on a daily basis, believing it boosts creativity, and there is some evidence for this although the science is not rigorous.

Fourth National Climate Assessment

Another week, another massive and massively depressing climate report. This one is the Fourth National Climate Assessment from basically all U.S. government agencies that have anything to do with climate science. A lot of it seems to have to do with the impacts of severe storms, droughts, and fires, which are already being felt and costing lives and money. I focused in on this paragraph from the executive summary about impacts on agriculture, and I’d like to dig more into the chapter on the subject if I can find the time.

Climate change presents numerous challenges to sustaining and enhancing crop productivity, livestock health, and the economic vitality of rural communities. While some regions (such as the Northern Great Plains) may see conditions conducive to expanded or alternative crop productivity over the next few decades, overall, yields from major U.S. crops are expected to decline as a consequence of increases in temperatures and possibly changes in water availability, soil erosion, and disease and pest outbreaks. Increases in temperatures during the growing season in the Midwest are projected to be the largest contributing factor to declines in the productivity of U.S. agriculture. Projected increases in extreme heat conditions are expected to lead to further heat stress for livestock, which can result in large economic losses for producers. Climate change is also expected to lead to large-scale shifts in the availability and prices of many agricultural products across the world, with corresponding impacts on U.S. agricultural producers and the U.S. economy. These changes threaten future gains in commodity crop production and put rural livelihoods at risk. Numerous adaptation strategies are available to cope with adverse impacts of climate variability and change on agricultural production. These include altering what is produced, modifying the inputs used for production, adopting new technologies, and adjusting management strategies. However, these strategies have limits under severe climate change impacts and would require sufficient long- and short-term investment in changing practices.

Vertical Farms

I’m listening to Dixon Despommier’s 2010 book Vertical Farming. I was expecting an architect-y, design-y kind of book, but it turns out Despommier is an ecologist and his main message is ecological. He believes the current system of farming has been a disaster for the planet’s ecosystems and that it is also headed for a catastrophic collapse with current and increased demands for food. His argument is to bring most agriculture into high rises in urban areas where it can be very carefully controlled. This would also allow the re-wilding of most land currently devoted to agriculture worldwide.

He argues that this an economical choice when the value of ecosystem services is considered (although he simultaneously makes this argument and rails against the idea of monetizing ecosystems at all). I’m a little more than halfway through the book and I haven’t gotten to the part where he argues that the cost of using artificial light rather than taking advantage of free and abundant sunlight is offset by other costs. I assume he is going to get to that. I also wonder if he is going to address the idea that removing one limit (in this case, the amount of food that can be produced with the planet’s available land and sunlight) in the long term could allow us to continue growing the population until we hit another limit. These are a couple questions I am curious how we will address, but overall I am enjoying the book. He does briefly bring up the idea that this could be a step toward moving into space or colonizing other planets.

fish wars?

Is it possible that part of the military confrontation over the South China Sea, among other places, is about access to fish? Yes, according to ABC (Australian Broadcast Corporation).

Through his research, Mr Bergenas has identified parallels between oil and fish resources.

“There is a concentrated supply. The Middle East has nearly half the world’s supply of recoverable crude,” says Mr Bergenas.

“Similarly, the central Pacific has 60 per cent of the world’s tuna which is a highly pursued commodity.”

Fishing boats are also sometimes being intentionally used as bait (no pun intended). If a Chinese fishing vessel gets attacked by, say, the Indonesian coast guard (I’m just making this up), China may then send in the navy to respond. In a way, it’s a similar strategy to settlers on the American frontier or the West Bank.

“organic” eating may lower cancer risk after all

I haven’t always been on the “organic” band wagon 100%. For one thing, the name is stupid. Chugging a glass of diesel fuel would be about as organic as you could get, in terms of the definition of the word I learned in high school chemistry. I am strongly in favor of sustainable farming practices that build soil, protect biodiversity, and prevent groundwater and surface water pollution. But in terms of health benefits, I have never felt the benefits were all that proven, and to some extent the industry is just based on scare tactics. I also wonder if the billions of humans on the planet can be fed without resorting to fossil fuel-derived fertilizer, and I still think that is dubious. But here is one large study in JAMA that did find significant evidence of a link between organic food (as labeled at the grocery store) and reduced cancer risk.

Association of Frequency of Organic Food Consumption With Cancer Risk: Findings From the NutriNet-Santé Prospective Cohort Study

Main Outcomes and Measures This study estimated the risk of cancer in association with the organic food score (modeled as quartiles) using Cox proportional hazards regression models adjusted for potential cancer risk factors.

Results Among 68 946 participants (78.0% female; mean [SD] age at baseline, 44.2 [14.5] years), 1340 first incident cancer cases were identified during follow-up, with the most prevalent being 459 breast cancers, 180 prostate cancers, 135 skin cancers, 99 colorectal cancers, 47 non-Hodgkin lymphomas, and 15 other lymphomas. High organic food scores were inversely associated with the overall risk of cancer (hazard ratio for quartile 4 vs quartile 1, 0.75; 95% CI, 0.63-0.88; P for trend = .001; absolute risk reduction, 0.6%; hazard ratio for a 5-point increase, 0.92; 95% CI, 0.88-0.96).

Conclusions and Relevance A higher frequency of organic food consumption was associated with a reduced risk of cancer. Although the study findings need to be confirmed, promoting organic food consumption in the general population could be a promising preventive strategy against cancer.

I researched the risk measures a little. The hazard risk ratio of 0.75 means that people eating mostly organic food (scoring in the top 25% of however they are measuring that) are 25% less likely than people eating the least organic food. That seems significant. From a quick skim, it appears they did try to control for differences in lifestyle (i.e., similar nutrition and exercise levels) and family history of cancer when coming to their conclusions.

climate change threatens barley yields

A new study says climate change is likely to threaten barley yields, leading to high beer prices later in the century. I’m hoping this is wrong and we can grow hops and barley in the formerly frozen tundra of Canada and Siberia. Of course the bigger picture is about grain yields overall, and that is not just about average temperature but about extreme heat and drought.

Decreases in global beer supply due to extreme drought and heat

Beer is the most popular alcoholic beverage in the world by volume consumed, and yields of its main ingredient, barley, decline sharply in periods of extreme drought and heat. Although the frequency and severity of drought and heat extremes increase substantially in range of future climate scenarios by five Earth System Models, the vulnerability of beer supply to such extremes has never been assessed. We couple a process-based crop model (decision support system for agrotechnology transfer) and a global economic model (Global Trade Analysis Project model) to evaluate the effects of concurrent drought and heat extremes projected under a range of future climate scenarios. We find that these extreme events may cause substantial decreases in barley yields worldwide. Average yield losses range from 3% to 17% depending on the severity of the conditions. Decreases in the global supply of barley lead to proportionally larger decreases in barley used to make beer and ultimately result in dramatic regional decreases in beer consumption (for example, −32% in Argentina) and increases in beer prices (for example, +193% in Ireland). Although not the most concerning impact of future climate change, climate-related weather extremes may threaten the availability and economic accessibility of beer.

nitrogen fixing bacteria as an alternative to fertilizer

The invention of nitrogen fertilizer is a key reason the Earth is able to support so many humans, but it has also taken a huge toll on our natural water bodies and climate. Grist has an interesting article on the possibility of using nitrogen-fixing bacteria, either naturally occurring or genetically engineered, on a much wider range of crops and on a much larger scale to help solve this problem.

A pack of startups is racing to market with a means of fixing nitrogen without polluting the Earth. One of them, Pivot Bio, just garnered a $70 million vote of confidence in a funding round led by Breakthrough Energy Ventures, the coalition of big-name billionaires — Bill Gates, Jeff Bezos, Michael Bloomberg, Richard Branson — hoping to power climate change-beating innovation…

Next year, Pivot plans to start getting farmers nitrogen-fixing bacteria — which efficiently delivers fertilizer to crops, no fossil fuels required. Farmers will spritz seeds with a liquid probiotic as they bury them in the ground. Another startup, Azotic Technologies based in England, is racing to bring a different bacterium to market around the same time. Intrinsyx Bio — a spin-off from a company that supplies NASA with bacteria and other critters for experiments — plans to put yet another bacterium on the market in 2020. And at least one other, the Bayer-backed Joyn Bio, is just ramping up. If any of them is able to provide a viable alternative to the international fertilizer industry, it could be the most significant environmental breakthrough since Haber figured out a way to synthetically release nitrogen from its natural bonds.

So this could be a big deal. Of course, I can’t help thinking of Donella Meadows talking about “layers of limits”. Remove one layer and continue to grow and expand, and you will eventually bump up against the next one.