Showing posts with label nutrition. Show all posts
Showing posts with label nutrition. Show all posts

Saturday, January 8, 2022

Dollar General: It's what's for dinner

One of the hands-on lessons I asked the medical students in my nutrition elective to do was to engage with the geography of food accessibility and with the well-meaning advice that it is possible to eat healthfully on a shoestring budget from convenience stores. 

You've probably heard the term "food desert," a term coined in the the 1990s to describe a neighborhood in which any kind of food, but especially fresh foods, are scarce. This is sometimes measured by at least 1/3 of the population living >1 mile from a store. "Food deserts" can be urban, as when a neighborhood is considered too dangerous for a company to want to put a standard grocery store. But they can also be rural, as when a family might have to drive 30-45 minutes to get to the closest big-box store. Some people have talked about "food swamps," where products are available but not of good quality (e.g. convenience stores with mostly processed items), but other food justice advocates argue that they don't want where they live to be described as "a swamp," and besides both of those terms suggest natural phenomena, whereas lack of accessibility to healthy food is a human-made problem. So the latest concept is "food apartheid" to recognize that human policies set some communities apart. (I asked students to listen Food Apartheid: (And Why We Don’t Call it a Food Desert),” a Point of Origin podcast from November 2020 with Karen Washington, Bryant Terry, and Hanna Garth.)

The assignment was for students to shop for and prepare a recipe from a convenience-store food guide published by the local children's hospital, or from Dollar General's own website of "easy meals." Because I didn't want to make anyone have to spend money on this class or necessarily change their eating habits, the other option was to compare one of these recipes to a standard recipe (e.g. mac and cheese from two different sources) to see what similarities and differences would emerge. I am usually wary of experiential learning like poverty or disability simulations, because I think it fosters the idea that the best way to understand another point of view is to try to replicate it, when that lived experience is just an identity put on for a few minutes or hours and then taken off again, like a costume. As someone who studies historical ideas and practices, I will never KNOW what it was like to live 100 years ago, but I have to believe that it is possible to gather a good enough impression from texts and objects. How much easier to ask someone who lives with food scarcity what that's like, rather than trying to recreate it?

However, I also believe that healthcare workers should be part of their communities, and that includes knowing where people shop, or send their kids to school, or place their elderly relatives in nursing homes. It would be pretty condescending of me to advise a single mother to "just use these recipe suggestions" to feed herself and her kids without ever having tried it myself, as if I were too good to eat food from a convenience store. So I designed this meal challenge with limited expectations. A purist, I decided to stick with the Dollar General a 15-minute walk from our house, although there is an organic grocery store 2 blocks from us, and I passed 3 pharmacies with "food marts" (Walgreens, Rite Aid, CVS) on the way. I can't say that the shopping experience was enjoyable, given the pallets of items blocking the aisles due to insufficient employees to stock them, and the fact that I was the only person properly wearing the mask that I had retraced my steps to grab. A sign on the door says this location is closing due to lack of staff, so I almost didn't go in, thinking it might already be closed.

It was lucky timing that Nicole Spector's article asking "Should You Buy Groceries at the Dollar Store?" came across my news feed the week before. Writing for a personal finance website, Spector notes, "It really depends on what you’re buying and how well you’ve done the math. Perhaps surprisingly, there are instances in which you’ll pay more for essentials at the dollar store than you would at a grocery mart." This is because the convenience store doesn't buy in bulk or move items at the same rate as a grocery store, which is why she also recommended checking both the expiration dates and the unit prices. Non-perishable goods and spices may be sweet deals, while baking supplies and perishable items may cost more. My experience was varied, with off-brand powdered ginger costing $0.50 and McCormick's red pepper flakes $2.95.

For our salmon patty dinner, I nabbed the remaining 4 packets of salmon packed in vegetable broth ($5.40) and easily found the quick oats ($1.65). The recipe has no serving suggestions--it doesn't even opine on whether to serve the salmon burgers on buns--so I freelanced the rest of the meal. I contemplated making cornbread with canned corn in it, but there wasn't a ready mix, so I would have had to buy the corn meal, flour, sugar, oil, and baking powder, in addition to the corn and other things I already needed. The packages of fancy pasta had too much sodium, so I opted for a packet of sour cream and chive instant mashed potatoes (4 servings for $1.00). I later found that an 8-pack of white hamburger buns go 2 for $1.00, and the extras could have been used for other meals. 

For vegetables, I spied a can of asparagus spears ($2.70) on the top shelf, and even though it claimed to be a single serving, I picked up a can of carrots ($0.75) because I didn't think DH would like the asparagus. The need to provide multiple options for sometimes picky household members is one reason that has been cited for why low-resource families do not offer their children more fruits and vegetables, because they can less easily absorb the cost of wasted purchases. I had salt, pepper, dill, and cooking spray at home, so I did not purchase these staples separately, but I did notice that sodium-free "Mrs. Dash" flavoring costs $3.20 compared to $1.00 for a canister of Morton's salt and only $0.55 for the off-brand. Meanwhile, you can get a 6-pack of Ramen noodles for $1 and lot less fuss for dinner.

I did decide to get the milk and eggs from the Dollar General. The cooking booklet recommends skim or 1% milk, but skim was not available, and 1% only in a gallon. I therefore chose a 1/2 gallon of 2% (even though I only needed 2 tablespoons of it and contemplated just using water for moisture, $3.20). The eggs were easy, although they came in an environmentally unfriendly Styrofoam container ($2.15). I didn't notice any fruits or veggies for sale, although there were a variety of dairy products such as yogurt, cheese, and sour cream.

It is too bad there are no serving suggestions beyond drinking water or milk, as these could have carried over the MyPlate.gov ideals of portion sizes and "a balanced diet" that includes fruits, veggies, and a reasonable number of carbs or starches in addition to the protein entrée. Nevertheless, because the booklet suggests these salmon burgers are suitable for a "fancy" meal, I decided to upgrade our usual beverage of choice (filtered tap water) by splurging on a zero-calorie lemon-lime flavored water ($0.80) and dessert. We rarely have "dessert" in our household but almost always snack in the evenings, typically on pretzels, popcorn, hot chocolate or cider, grapes, cherries, clementines, or occasionally ice cream. The freezer cabinet was surprisingly well stocked; because chocolate gives DH migraines, I chose a box of 6 strawberry popsicles $3.75, for a total of $21.40 for 4-5 servings, plus milk, oats, and eggs that would be left over.

Salmon Burgers Estimated Preparation Time: 10 minutes Serving: 1 [meal? makes 5 patties]

Ingredients 14 oz Canned salmon (bones removed, if needed) 1 cup Quick oats 1 tsp Dried dill 1 Egg, lightly beaten 2 tbsp Low-fat milk ¼ tsp Salt 2-4 tbsp Canola oil Black pepper to taste

Instructions 1. Drain salmon. Remove bones, if required. 2. Combine salmon, oats, dill, egg, milk, salt, and pepper in a medium bowl. Mix thoroughly. 3. Shape into 5 patties. 4. Cook in a small amount of oil in a hot pan. 5. Flip when the first side has cooked to golden brown. Serve immediately when second side is done cooking (approximately 7 minutes per side). 

Helpful Hints Allow your kids to make a “fancy” dinner tonight. ~ Have them take your order, set the table and pour the water or milk you ordered. ~ Set out all of the ingredients for the burgers in bowls on the counter and allow them to pour them all into one big bowl. Let them use their hands to mix up and form the patties (after washing their hands, of course). ~ Assist them in cooking the salmon burgers while encouraging them to arrange the plate and serve it to you.

Dinner took a little longer than 10 minutes to prepare, of course, but less than half an hour. Although I only had 10oz of salmon instead of 14, I still ended up with 5 patties. Unfortunately, these didn't hold together well during cooking, and I found them under-seasoned (may be due to operator error). The mashed potatoes were fast and delicious, and the flavored water tasted sweet thanks to the sucralose (aka Splenda). The asparagus were the big disappointment of the night, coming out of the can a dingy gray-green color and only made more damp by my trying to steam them. I suppose some hot sauce could have livened up the taste, but there was nothing to do for the texture. The can advertised itself as a single serving, but we got three out of it, and I threw the rest away in favor of the canned carrots with the leftover patties.

Nutritionally, I estimated 340 kcal per serving, including a tablespoon of ketchup for the patties, but >50% recommended daily value of sodium. For $5 per serving, that's not bad, although I can understand why this was pitched as a "fancy" meal, given the trouble it takes to make the salmon burgers. While I do not think I have much of a sense of what it would be like to rely on a convenience store for the majority of my diet--when a fast-food burger with lettuce and tomato might provide a rare opportunity for fresh produce--I do feel that I could better navigate a conversation with a patient about what is and isn't possible given the constraints of food apartheid.

Read more about this medical school elective here.

Thursday, January 6, 2022

Butter versus Margarine

This month I am piloting a new elective in nutrition for senior medical students. Every day they read a combination of historical and contemporary literature on food and diet, and we meet for 2 hours for a lecture and/or discussion. Each week has a different theme: "adult" nutrition, including the food groups and common "dietary diseases" such as diabetes and hypertension; pediatric nutrition, including infant feeding and eating disorders; obesity, including both medical/surgical solutions for weight loss as well as the anti-diet movement; and surgical nutrition, including perioperative management of fluids and "artificial" nourishment via TPN or tube feeds. I started with a brief history of some themes in the science of nutrition; here is the YouTube recording of my lecture.


For the day on fats and cardiovascular disease, I assigned Todd Olszewski's article "The Causal Conundrum: The Diet-Heart Debates and the Management of Uncertainty in American Medicine" (JHMAS, 2014); Edgar R. Miller III, Thomas P. Erlinger, and Lawrence J. Appel's summation, "The Effects of Macronutrients on Blood Pressure and Lipids: An Overview of the DASH and OmniHeart Trials" (Current Atherosclerosis Reports, 2006); and the latest version(s) of the American Heart Association and American College of Cardiology nutritional recommendations, Lichtenstein, et alia (Circulation, 2021) and/or Van Horn, et alia (Circulation, 2016).

Olszewski writes about the sometimes furious professional debates in the mid-twentieth century over "the diet-heart hypothesis," or the idea that increased dietary fat correlates with increased serum lipid levels, which are associated with higher rates of heart attacks and strokes. Some experts were persuaded by the circumstantial evidence, while others pointed out these are correlations of risk factors based mostly on epidemiological studies, not causations proven through strict feeding studies with histological proof of clinical disease. Meanwhile, the American public largely accepted the argument and changed their dietary practices (consider the substitution of cereal or a bagel for a breakfast of eggs and bacon), despite the lack of scientific agreement, probably due to fear of suffering ill health.

Images from Jeff Nobs

I broke the students into four groups in Zoom breakout rooms and asked them to research and defend a position for or against butter or margarine. 20-30 minutes later, they were ready to present. I asked the first group why I should put butter on my toast. Their spokesman acknowledged that there was an association between saturated fats and cardiovascular disease BUT, based on the label from the butter in someone's fridge, 1 serving was only 1 tablespoon with 11 total grams of fat and 63 kcal, with 7 grams of that being saturated. However, they argued that the most common butter fats are palmitic acid (29%), maristic acid, stearic acid, and laric acid. They had found two epidemiological studies that proposed those last two reduce the HDL/TGL ratio decreased CVD risk. Furthermore, the national Dietary Guidelines allow up to 5% of calories to come from saturated fat for the production of hormones, cell membranes, etc., and that amounts to 100kcal in a 2000kcal/day diet.

The pro-margarine group pointed out that their product had been designed to reduce the amount of saturated fat in the diet, with only 0.67 grams per serving of tub margarine versus 7 grams from stick butter. They acknowledged that the original margarine had contained more trans fats (as well as a color packet to make it yellow instead of white), whereas newer margarines are healthier because they contain more unsaturated, non-trans fats. I pointed out that it is important to remember food history when weighing evidence of nutritional claims, because food products have changed over time. They even found a study from the Journal of Epidemiology (2018) that showed lower rates of myocardial infarction (but not other outcomes) among individuals who consumed margarine rather than butter. This is an impressive example of a nutritional study with a clinical outcome rather than one based on risk factors like measuring serum lipids or blood pressure. They concluded with the statistic that margarine production releases 3.5x less carbon dioxide than butter, making it the better choice for the environment.

Images from Jeff Nobs

When I asked the third group why I shouldn't put butter on my toast, their spokespeople warned us about high saturated fat content (especially any product with >60% fat), salted butters as a double health-whammy, too many calories, and not enough micronutrients. Plus, many people are lactose intolerant [however, the lactose content is very low, so this actually isn't a problem]. The anti-butter students urged us to "free the dairy cows!" and choose one of the many, many non-butter options for our toast...like avocados. They used the webpages from HealthLine, Harvard Health, and Mayo Clinic.

Finally, the anti-margarine group argued hyperbolically yet persuasively against the butter substitute. Their very entertaining spokesman railed against polyunsaturated fats being associated with obesity and heart disease, and that margarine couldn't be classified as a "health product" given its association with asthma, eczema, and other inflammatory disease processes. He then graphically described the "disgusting process" of manufacturing margarine with chemicals and metals as compared to "just churning butter" [as if that were not also a highly industrialized process these days]. It was a command performance that left us in stitches, and I was sorry we weren't in a room together to share the laughter. The students joked in the chat that the anti-margarine spokesman had roasted margarine so well its fats had turned rancid. Interestingly this "anti" group had also used patient-facing sources such as from the Cleveland Clinic.

When I asked what evidence they had found most persuasive, the students discussed individual health concerns, butter as part of a balanced diet ("a little dab'll do 'ya"), and environmental worries such as how much water has to be diverted into California for agricultural production of non-butter options. It was an engaging lesson that let the students think about the nature of evidence, how a message can be shaped by its presentation, and the applicability of general nutritional advice for individual patients. Me? I reverted from the margarine of my childhood--when it was a health product--to butter in college, based on the strength of my roommate's argument, "If it was good enough for my grandmother, it's good enough for me!" How's that for an emotional argument? But then, we don't just eat for nutrition, so it makes a certain kind of sense.

Wednesday, October 30, 2019

What Residency Looks Like LXXVIII: Chew on this

Sometimes residency looks like a big smile before you start your senior talk on a controversial anti-dieting movement, only to realize that the latest version of the slides did not get saved in the cloud, so now you have to use an older version without all your nice edits, and then you wonder whether nobody will answer your easy open-ended question at the beginning because they disagree with you or because they saw you fumble and think you are incompetent. Except by the end of the talk you're running on time after all because you didn't have to try to power through all those extra slides you added last night, and in fact the audience is interrupting you to ask questions and make more comments and coming up afterwards excited to know your opinion, so maybe it wasn't such a disaster after all.

Title: "Health At Every Size: A Historical and Literature Review."

Best of all? I get a re-do next week at a different site. I might cut those extra slides, though.

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