Scientists Are Studying How to Help Dogs Have Longer Lives, in a Bid to Further Our Own

Scientists Are Studying How to Help Dogs Have Longer Lives, in a Bid to Further Our Own

Feeding dogs only once a day is showing health benefits in a large study, scientists report.

Photo by Eric Ward on Unsplash

The sad eyes. The wagging tail. The frustrated whine. The excited bark. Dogs know how to get their owners to fork over the food more often.

The extra calories dogs get from feeding patterns now used by many Americans may not be good for them from a health and longevity viewpoint. In research from a large study called the Dog Aging Project, canines fed once a day had better scores on cognition tests and lower odds of developing diseases of organs throughout the body: intestinal tract, mouth and teeth, bones and joints, kidneys and bladder, and liver and pancreas.

Fewer than 1 in 10 dog owners fed their furry friends once daily, while nearly three fourths provided two daily meals.

“Most veterinarians have been led to believe that feeding dogs twice a day is optimal, but this is a relatively new idea that has developed over the past few decades with little supportive evidence from a health standpoint,” said Matt Kaeberlein, PhD, Co-Director of the Dog Aging Project, a professor of pathology and Director of the Healthy Aging and Longevity Research Institute at the University of Washington. Kaeberlein studies basic mechanisms of aging to find ways of extending the healthspan, the number of years of life lived free of disease. It’s not enough to extend the lifespan unless declines in biological function and risks of age-related diseases are also studied, he believes, hence the healthspan.

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L. Michael Posey
A pharmacist-editor-journalist since 1980, L. Michael Posey is a regular writer and editor for The Gerontological Society of America, Postgraduate Healthcare Education’s PowerPak.com website, and other clients. The author of several books and many news and journal articles, Posey is a founding editor of a landmark textbook in pharmacy, Pharmacotherapy: A Pathophysiologic Approach, a McGraw Hill title now in its 11th edition. He holds a master's degree in health and medical journalism and baccalaureate degrees in pharmacy and microbiology from the University of Georgia. Posey is the father of four sons and a daughter and resides in the Wine Country north of San Francisco. Follow him on Twitter @lmposey.
What will the $100 genome mean?

A company has slashed the cost of assessing a person's genome to just $100. With lower costs - and as other genetic tools mature and evolve - a wave of new therapies could be coming in the near future.

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In May 2022, Californian biotech Ultima Genomics announced that its UG 100 platform was capable of sequencing an entire human genome for just $100, a landmark moment in the history of the field. The announcement was particularly remarkable because few had previously heard of the company, a relative unknown in an industry long dominated by global giant Illumina which controls about 80 percent of the world’s sequencing market.

Ultima’s secret was to completely revamp many technical aspects of the way Illumina have traditionally deciphered DNA. The process usually involves first splitting the double helix DNA structure into single strands, then breaking these strands into short fragments which are laid out on a glass surface called a flow cell. When this flow cell is loaded into the sequencing machine, color-coded tags are attached to each individual base letter. A laser scans the bases individually while a camera simultaneously records the color associated with them, a process which is repeated until every single fragment has been sequenced.

Instead, Ultima has found a series of shortcuts to slash the cost and boost efficiency. “Ultima Genomics has developed a fundamentally new sequencing architecture designed to scale beyond conventional approaches,” says Josh Lauer, Ultima’s chief commercial officer.

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David Cox
David Cox is a science and health writer based in the UK. He has a PhD in neuroscience from the University of Cambridge and has written for newspapers and broadcasters worldwide including BBC News, New York Times, and The Guardian. You can follow him on Twitter @DrDavidACox.
Farmers and ranchers share land for healthier food and less waste

Sharing land and other resources among farmers isn’t new. But research shows it may be increasingly relevant in a time of climatic upheaval.

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The livestock trucks arrived all night. One after the other they backed up to the wood chute leading to a dusty corral and loosed their cargo — 580 head of cattle by the time the last truck pulled away at 3pm the next afternoon. Dan Probert, astride his horse, guided the cows to paddocks of pristine grassland stretching alongside the snow-peaked Wallowa Mountains. They’d spend the summer here grazing bunchgrass and clovers and biscuitroot. The scuffle of their hooves and nibbles of their teeth would mimic the elk, antelope and bison that are thought to have historically roamed this portion of northeastern Oregon’s Zumwalt Prairie, helping grasses grow and restoring health to the soil.

The cows weren’t Probert’s, although the fifth-generation rancher and one other member of the Carman Ranch Direct grass-fed beef collective also raise their own herds here for part of every year. But in spring, when the prairie is in bloom, Probert receives cattle from several other ranchers. As the grasses wither in October, the cows move on to graze fertile pastures throughout the Columbia Basin, which stretches across several Pacific Northwest states; some overwinter on a vegetable farm in central Washington, feeding on corn leaves and pea vines left behind after harvest.

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Lela Nargi
Lela Nargi is a Brooklyn, NY-based veteran freelance journalist covering food and agriculture system, social justice issues, science & the environment, and the places where those topics intersect for The New York Times, The Guardian, the Food and Environment Reporting Network (FERN), Eater, Modern Farmer, USA Today, and other outlets. Find her at lelanargi.com.