Human, Bird, or Dog Waste? Scientists Parsing Poop To Aid DC’s Forgotten River
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KFF Health News Peggy Girshman reporting fellow Jackie Fortiér joined a boat tour to spotlight a review of microbes in the Anacostia River, a step toward making the river healthier and swimmable. The story was featured on WAMU’s “Health Hub” on Feb. 26.
On a bright October day, high schoolers from Francis L. Cardozo Education Campus piled into a boat on the Anacostia River in Washington, D.C. Most had never been on the water before.
Their guide, Trey Sherard of the Anacostia Riverkeeper, started the tour with a well-rehearsed safety talk. The nonprofit advocates for the protection of the river.
A boy with tousled black hair casually dipped his fingers in the water.
“Don’t touch it!” Sherard yelled.
Why was Sherard being so stern? Was it dangerously cold? Were there biting fish?
Because of the sewage.
“We get less sewage than we used to. Sewage is a code word for what?” Sherard asked the teenagers.
“Poop!” one student piped up.
“Human poop,” Sherard said. “Notice I didn’t say we get none. I said we get what? Less.”
Tours like this are designed to get young people interested in the river’s ecology, but it’s a fine line to tread — interacting with the water can make people sick. Because of the health risks, swimming hasn’t been legal in the Anacostia for more than half a century. The polluted water can cause gastrointestinal and respiratory illnesses, as well as eye, nose, and skin infections.
The river is the cleanest it’s been in years, according to environmental experts, but they still advise you not to take a dip in the Anacostia — not yet, at least.
About 40 million people in the U.S. live in a community with a combined sewer system, where wastewater and stormwater flow through the same pipes. When pipe capacities are reached after heavy rains, the overflow sends raw wastewater into the rivers instead of to a treatment plant.
Federal regulations, including sections of the Clean Water Act, require municipalities such as Washington to reduce at least 85% of this pollution or face steep fines.
To achieve compliance, Washington launched a $2.6 billion infrastructure project in 2011. DC Water’s Clean Rivers Project will eventually build multiple miles-long underground storage basins to capture stormwater and wastewater and pump it to treatment plants once heavy rains have subsided.
The Anacostia tunnel is the first of these storage basins to be completed. It can collect 190 million gallons of bacteria-laden wastewater for later treatment, said Moussa Wone, vice president of the Clean Rivers Project.
Climate change is causing more intense rainstorms in Washington, so even after construction is complete in 2030, Wone said, untreated stormwater will be discharged into the river, though much less frequently.
“On the Anacostia, we’re going to be reducing the frequency of overflows from 82 to two in an average year,” Wone said.
But while the Anacostia sewershed covers 176 square miles, he noted, only 17% is in Washington.
“The other 83% is outside the district,” Wone said. “We can do our part, but everybody else has to do their part also.”
Upstream in Maryland’s Montgomery and Prince George’s counties, miles of sewer lines are in the process of being upgraded to divert raw sewage to a treatment plant instead of the river.
The data shows that poop is a problem for river health — but knowing what kind of poop it is matters. Scientists monitor E. coli to indicate the presence of feces in river water, but since the bacteria live in the guts of most warm-blooded animals, the source is difficult to determine.
“Is it human feces? Or is it deer? Is it gulls’? Is it dogs’?” said Amy Sapkota, a professor of environmental and occupational health at the University of Maryland.
Bacterial levels can fluctuate across the river even without rainstorms. An Anacostia Riverkeeper report found that in 2023 just three of nine sites sampled along the Washington portion of the watershed had consistently low E. coli levels throughout the summer season.
Sapkota is heading a new bacterial monitoring program measuring the amount of E. coli that different animal species deposit along the river.
The team uses microbial source tracking to analyze samples of river water taken from different locations each month by volunteers. The molecular approach enables scientists to target specific gene sequences associated with fecal bacteria and determine whether the bacteria come from humans or wildlife. Microbial source tracking also measures fecal pollution levels by source.
“We can quantify the levels of different bacterial targets that may be coming from a human fecal source or an animal fecal source,” Sapkota said.
Her team expects to have preliminary results this year.
The health risk to humans from river water will never be zero, Sapkota said, but based on her team’s research, smart city planning and retooled infrastructure could lessen the level of harmful bacteria in the water.
“Let’s say that we’re finding that actually there’s a lot of deer fecal signatures in our results,” Sapkota said. “Maybe this points to the fact that we need more green buffers along the river that can help prevent fecal contaminants from wildlife from entering the river during stormwater events.”
Washington is hoping to recoup some of the cost of building green spaces and other river cleanup. In January, the office of D.C. Attorney General Brian Schwalb filed a lawsuit seeking unspecified damages from the federal government over decades of alleged pollution of the Anacostia River.
Brenda Lee Richardson, coordinator of the Anacostia Parks & Community Collaborative, said the efforts to cut down on trash and sewage are paying off. She sees a river on the mend, with more plant and animal life sprouting up.
“The ecosystem seems a lot greener,” she said. “There’s stuff in the river now that wasn’t there before.”
But any changes to the waterfront need to be done with residents of both sides of the river in mind, she said.
“We want there to be some sense of equity as it relates to who has access,” she said. “When I look at who is recreating, it’s not people who look like me.”
Richardson has lived for 40 years in Ward 8 — a predominantly Black area on the east side of the river whose residents are generally less affluent than those on the west side. She and her neighbors don’t consider the Anacostia a place to get out and play, she said.
As the water quality slowly improves, Richardson said, she hopes the Anacostia’s reputation is also rehabilitated. Even if it’s not safe to swim in, Richardson enjoys boating trips like the one with the Anacostia Riverkeeper.
“To see all those creatures along the way and the greenery. It was comforting,” she said. “So rather than take a pill to settle my nerves, I can just go down the river.”
KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF—an independent source of health policy research, polling, and journalism. Learn more about KFF.
Subscribe to KFF Health News’ free Morning Briefing.
This article first appeared on KFF Health News and is republished here under a Creative Commons license.
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Want to sleep longer? Adding mini-bursts of exercise to your evening routine can help – new study
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Exercising before bed has long been discouraged as the body doesn’t have time to wind down before the lights go out.
But new research has found breaking up a quiet, sedentary evening of watching television with short bursts of resistance exercise can lead to longer periods of sleep.
Adults spend almost one third of the 24-hour day sleeping. But the quality and length of sleep can affect long-term health. Sleeping too little or waking often in the night is associated with an increased risk of heart disease and diabetes.
Physical activity during the day can help improve sleep. However, current recommendations discourage intense exercise before going to bed as it can increase a person’s heart rate and core temperature, which can ultimately disrupt sleep.
Nighttime habits
For many, the longest period of uninterrupted sitting happens at home in the evening. People also usually consume their largest meal during this time (or snack throughout the evening).
Insulin (the hormone that helps to remove sugar from the blood stream) tends to be at a lower level in the evening than in the morning.
Together these factors promote elevated blood sugar levels, which over the long term can be bad for a person’s health.
Our previous research found interrupting evening sitting every 30 minutes with three minutes of resistance exercise reduces the amount of sugar in the bloodstream after eating a meal.
But because sleep guidelines currently discourage exercising in the hours before going to sleep, we wanted to know if frequently performing these short bursts of light activity in the evening would affect sleep.
Activity breaks for better sleep
In our latest research, we asked 30 adults to complete two sessions based in a laboratory.
During one session the adults sat continuously for a four-hour period while watching streaming services. During the other session, they interrupted sitting by performing three minutes of body-weight resistance exercises (squats, calf raises and hip extensions) every 30 minutes.
After these sessions, participants went home to their normal life routines. Their sleep that evening was measured using a wrist monitor.
Our research found the quality of sleep (measured by how many times they woke in the night and the length of these awakenings) was the same after the two sessions. But the night after the participants did the exercise “activity breaks” they slept for almost 30 minutes longer.
Identifying the biological reasons for the extended sleep in our study requires further research.
But regardless of the reason, if activity breaks can extend sleep duration, then getting up and moving at regular intervals in the evening is likely to have clear health benefits.
Time to revisit guidelines
These results add to earlier work suggesting current sleep guidelines, which discourage evening exercise before bed, may need to be reviewed.
As the activity breaks were performed in a highly controlled laboratory environment, future research should explore how activity breaks performed in real life affect peoples sleep.
We selected simple, body-weight exercises to use in this study as they don’t require people to interrupt the show they may be watching, and don’t require a large space or equipment.
If people wanted to incorporate activity breaks in their own evening routines, they could probably get the same benefit from other types of exercise. For example, marching on the spot, walking up and down stairs, or even dancing in the living room.
The key is to frequently interrupt evening sitting time, with a little bit of whole-body movement at regular intervals.
In the long run, performing activity breaks may improve health by improving sleep and post-meal blood sugar levels. The most important thing is to get up frequently and move the body, in a way the works best for a person’s individual household.
Jennifer Gale, PhD candidate, Department of Human Nutrition, University of Otago and Meredith Peddie, Senior Lecturer, Department of Human Nutrition, University of Otago
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Turns out the viral ‘Sleepy Girl Mocktail’ is backed by science. Should you try it?
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Many of us wish we could get a better night’s sleep. Wouldn’t it be great if it was as easy as a mocktail before bed?
That’s what the latest viral trend might have us believe. The “Sleepy Girl Mocktail” is a mix of tart cherry juice, powdered magnesium supplement and soda water. TikTok videos featuring the concoction have garnered hundreds of thousands of views. But, what does the science say? Do these ingredients actually help us sleep?
Tart cherry juice
There is research to show including tart cherry juice in your diet improves overall sleep. Clinical trials show tart cherry juice increases sleep quality and quantity, as well as a lessening insomnia symptoms (compared to a placebo). This could be due to the presence of melatonin, a sleep-promoting hormone, in cherries.
Tart cherry varieties such as Jerte Valley or Montmorency have the highest concentration of melatonin (approximately 0.135 micrograms of melatonin per 100g of cherry juice). Over the counter melatonin supplements can range from 0.5 milligram to over 100 milligrams, with research suggesting those beginning to take melatonin start with a dose of 0.5–2 milligrams to see an improvement in sleep.
Melatonin naturally occurs in our bodies. Our body clock promotes the release of melatonin in the evening to help us sleep, specifically in the two hours before our natural bedtime.
If we want to increase our melatonin intake with external sources, such as cherries, then we should be timing our intake with our natural increase in melatonin. Supplementing melatonin too close to bed will mean we may not get the sleep-promoting benefits in time to get off to sleep easily. Taking melatonin too late may even harm our long-term sleep health by sending the message to our body clock to delay the release of melatonin until later in the evening.
Magnesium – but how much?
Magnesium also works to promote melatonin, and magnesium supplements have been shown to improve sleep outcomes.
However, results vary depending on the amount of magnesium people take. And we don’t yet have the answers on the best dose of magnesium for sleep benefits.
We do know magnesium plays a vital role in energy production and bone development, making it an important daily nutrient for our diets. Foods rich in magnesium include wheat cereal or bread, almonds, cashews, pumpkin seeds, spinach, artichokes, green beans, soy milk and dark chocolate.
Bubbly water
Soda water serves as the base of the drink, rather than a pathway to better sleep. And bubbly water may make the mix more palatable. It is important to keep in mind that drinking fluids close to bedtime can be disruptive to our sleep as it might lead to waking during the night to urinate.
Healthy sleep recommendations include avoiding water intake in the two hours before bed. Having carbonated beverages too close to bed can also trigger digestive symptoms such as bloating, gassiness and reflux during the night.
Bottoms up?
Overall, there is evidence to support trying out the Sleepy Girl Mocktail to see if it improves sleep, however there are some key things to remember:
timing: to get the benefits of this drink, avoid having it too close to bed. Aim to have it two hours before your usual bedtime and avoid fluids after this time
consistency: no drink is going to be an immediate cure for poor sleep. However, this recipe could help promote sleep if used strategically (at the right time) and consistently as part of a balanced diet. It may also introduce a calming evening routine that helps your brain relax and signals it’s time for bed
- maximum magnesium: be mindful of the amount of magnesium you are consuming. While there are many health benefits to magnesium, the recommended daily maximum amounts are 420mg for adult males and 320mg for adult females. Exceeding the maximum can lead to low blood pressure, respiratory distress, stomach problems, muscle weakness and mood problems
sugar: in some of the TikTok recipes sugar (as flavoured sodas, syrups or lollies) is added to the drink. While this may help hide the taste of the tart cherry juice, the consumption of sugar too close to bed may make it more difficult to get to sleep. And sugar in the evening raises blood sugar levels at a time when our body is not primed to be processing sugar. Long term, this can increase our risk of diabetes
sleep environment: follow good sleep hygiene practices including keeping a consistent bedtime and wake time, a wind-down routine before bed, avoiding electronic device use like phones or laptops in bed, and avoiding bright light in the evening. Bright light works to suppress our melatonin levels in the evening and make us more alert.
What about other drinks?
Other common evening beverages include herbal tisanes or teas, hot chocolate, or warm milk.
Milk can be especially beneficial for sleep, as it contains the amino acid tryptophan, which can promote melatonin production. Again, it is important to also consider the timing of these drinks and to avoid any caffeine in tea and too much chocolate too close to bedtime, as this can make us more alert rather than sleepy.
Getting enough sleep is crucial to our health and wellbeing. If you have tried multiple strategies to improve your sleep and things are not getting better, it may be time to seek professional advice, such as from a GP.
Charlotte Gupta, Postdoctoral research fellow, CQUniversity Australia
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Where Nutrition Meets Habits!
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Where Nutrition Meets Habits…
This is Claudia Canu, MSc., INESEM. She’s on a mission to change the way we eat:
Often, diet is a case of…
- Healthy
- Easy
- Cheap
(choose two)
She wants to make it all three, and tasty too. She has her work cut out for her, but she’s already blazed quite a trail personally:
❝Nine months before turning 40 years old, I set a challenge for myself: Arrive to the day I turn 40 as the best possible version of myself, physically, mentally and emotionally.❞
~ Claudia Canu
In Her Own Words: My Journey To My Healthy 40s
And it really was quite a journey:
- September: Changes That Destabilize
- October: Looking for Focus
- November: New Habits
- December: Analyzing The First Results
- January: Traveling & Perfectionism
- February: Habits & Goals
- March: Connection, Cravings, & Organization
- April: Physical & Emotional Changes After 7 Months
- May: Reflections & Considerations
- June: Challenge Is Over
For those of us who’d like the short-cut rather than a nine-month quasi-spiritual journey… based on both her experience, and her academic and professional background in nutrition, her main priorities that she settled on were:
- Making meals actually nutritionally balanced, which meant re-thinking what she thought a meal “should” be
- Making nutritionally balanced meals that didn’t require a lot of skill and/or resources
- That’s it!
But, easier said than done… Where to begin?
She shares an extensive list of recipes, from meals to snacks (I thought I was the only one who made coffee overnight oats!), but the most important thing from her is:
Claudia’s 10 Guiding Principles:
- Buy only fresh ingredients that you are going to cook yourself. If you decide to buy pre-cooked ones, make sure they do not have added ingredients, especially sugar (in all its forms).
- Use easy and simple cooking methods.
- Change ingredients every time you prepare your meals.
- Prepare large quantities for three or four days.
- Store the food separately in tightly closed Tupperware.
- Organize yourself to always have ready-to-eat food in the fridge.
- When hungry, mix the ingredients in the ideal amounts to cover the needs of your body.
- Chew well and take the time to taste your food.
- Eat foods that you like and enjoy.
- Do not overeat but don’t undereat either.
We have only two quibbles with this fine list, which are:
About Ingredients!
Depending on what’s available around you, frozen and/or tinned “one-ingredient” foods can be as nutritional as (if not more nutritional than) fresh ones. By “one-ingredient” foods here we mean that if you buy a frozen pack of chopped onions, the ingredients list will be: “chopped onions”. If you buy a tin of tomatoes, the ingredients will say “Tomatoes” or at most “Tomatoes, Tomato Juice”, for example.
She does list the ingredients she keeps in; the idea that with these in the kitchen, you’ll never be in the position of “oh, we don’t have much in, I guess it’s a pizza delivery night” or “well there are some chicken nuggets at the back of the freezer”.
Check Out And Plan: 10 Types Of Ingredients You Should Always Keep In Your Kitchen
Here Today, Gone Tomorrow?
Preparing large quantities for three or four days can result in food for one or two days if the food is unduly delicious
But! Claudia has a remedy for that:
Read: How To Eliminate Food Cravings And What To Do When They Win
Anyway, there’s a wealth of resources in the above-linked pages, so do check them out!
Perhaps the biggest take-away is to ask yourself:
“What are my guiding principles when it comes to food?”
If you don’t have a ready answer, maybe it’s time to tackle that—whether Claudia’s way or your own!
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Yoga Safety: Simple Guidelines
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It’s Q&A Day at 10almonds!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small
❝I was wondering whether there were very simple, clear bullet points or instructions on things to be wary of in Yoga.❞
That’s quite a large topic, and not one that lends itself well to being conveyed in bullet points, but first we’ll share the article you sent us when sending this question:
Tips for Avoiding Yoga Injuries
…and next we’ll recommend the YouTube channel @livinleggings, whose videos we feature here from time to time. She (Liv) has a lot of good videos on problems/mistakes/injuries to avoid.
Here’s a great one to get you started:
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The Bates Method for Better Eyesight Without Glasses − by Dr. William Bates
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This is a very popular book and method, albeit not a very new one. It was first published in 1920; self-published by Dr. Bates, as the American Medical Association (AMA) considered it quackery.
Of course, our understanding of eyesight has improved a lot in the past 100 years, so, with the benefit of an extra century of ophthalmological research, who was on the right side of history?
As it turns out, all of Dr. Bates’ ideas have been firmly disproven, and eyes simply do not work the way he thought they do (for example, he believed that rather than adjusting the lens for focus, the muscles around the eye elongate the eyeball; this absolutely is not how focusing works, and while how much those muscles squeeze the eye does vary depending on some physiological factors, there are no known exercises that can change them).
Nevertheless, for the interested, his techniques include such things as:
- putting pressure on one’s eyes with one’s hands (which can increase glaucoma risk)
- visualization, rather than actual viewing, of an eye chart (this is ironic, because the book cover promises that an eye chart is included; it is not; perhaps it was hoped that we would visualize it more vividly and thus see it?)
- sunning, which is not only directly looking at the sun, but also using a burning glass to increase the focus of the sunlight onto one’s eye (please do not do this under any circumstances)
His primary thesis in this work, though, is that eyesight problems of all kinds (from short- and long-sightedness, to more serious things like cataracts and glaucoma) are caused by the tension produced by reading books, so relaxation exercises are his prescription for this.
The style is characteristic of its era and then some; bold claims are made with no evidence, there are no references, and the text is (ironically, given his opinions on tension being produced by reading books) quite dense. It certainly doesn’t lend itself well to skimming, for example, because something critical can easily be buried in a wall of text of what is, honestly, mostly waffle.
Bottom line: if you’d like to improve your eyesight and reduce your dependency on glasses, then we absolutely cannot recommend this book, and would direct you instead to Vision for Life, Revised Edition – by Dr. Meir Schneider, which is much more consistent with actual science.
Click here if you are, nonetheless, curious about Dr. Bates’ book and wish to check it out!
PS: Dr. Bates certainly was an interesting fellow; he disappeared mysteriously, but was found working as a medical assistant a few weeks later by his wife, whom he now claimed to not recognize. Then he disappeared again two days later (his wife never found him, this time, despite trying for many years), only to show up again, 13 years later, shortly after his wife’s death, whereupon he remarried (to his long-time personal assistant). None of this has anything to do with his fascinating opinions on eyesight, but it’s a story worth mentioning.
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From Cucumbers To Kindles
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You’ve Got Questions? We’ve Got Answers!
Q: Where do I get cucumber extract?
A: You can buy it from BulkSupplements.com (who, despite their name, start at 100g packs)
Alternatively: you want it as a topical ointment (for skin health) rather than as a dietary supplement (for bone and joint health), you can extract it yourself! No, it’s not “just juice cucumbers”, but it’s also not too tricky.
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