Tag Archives: Personal Responsibility

University of Virginia study: Study finds dopamine, biological clock link to snacking, overeating and obesity

16 Jan

Lisa Simonson wrote in the Livestrong article, What Are Good & Bad Healthy Lifestyle Choices?

Everyone makes both good and bad lifestyle choices. You may make the choices you do because of learned habits, stress, exhaustion and even timeliness. To live a healthy lifestyle you need to have a nutrient-rich diet, moderate exercise each week, get enough rest and avoid products that can lead to unhealthy habits…. https://www.livestrong.com/article/381713-what-are-good-bad-healthy-lifestyle-choices/
See, Why Digital Overload Is Now Central to the Human Condition https://singularityhub.com/2016/01/15/why-grappling-with-digital-overload-is-now-part-of-the-human-condition/#sm.0001du9uyrj9zefstyx14vmmdlhp8
Science Daily reported in Digital device overload linked to obesity risk:
If your attention gets diverted in different directions by smartphones and other digital devices, take note: Media multitasking has now been linked to obesity.
New research from Rice University indicates that mindless switching between digital devices is associated with increased susceptibility to food temptations and lack of self-control, which may result in weight gain.
“Increased exposure to phones, tablets and other portable devices has been one of the most significant changes to our environments in the past few decades, and this occurred during a period in which obesity rates also climbed in many places,” said Richard Lopez, a postdoctoral research fellow at Rice and the study’s lead author. “So, we wanted to conduct this research to determine whether links exists between obesity and abuse of digital devices — as captured by people’s tendency to engage in media multitasking….”
https://www.sciencedaily.com/releases/2019/04/190402164520.htm

Citation:

Digital device overload linked to obesity risk
Date: April 2, 2019
Source: Rice University
Summary:
If your attention gets diverted in different directions by smartphones and other digital devices, take note: Media multitasking has now been linked to obesity.

Journal Reference:
Richard B. Lopez, Todd F. Heatherton, Dylan D. Wagner. Media multitasking is associated with higher risk for obesity and increased responsiveness to rewarding food stimuli. Brain Imaging and Behavior, 2019; DOI: 10.1007/s11682-019-00056-0

See, https://drwilda.com/tag/obesity/

Science Daily reported in Study finds dopamine, biological clock link to snacking, overeating and obesity:

During the years 1976 through 1980, 15% of U.S. adults were obese. Today, about 40% of adults are obese. Another 33% are overweight.
Coinciding with this increase in weight are ever-rising rates of heart disease, diabetes, cancer and health complications caused by obesity, such as hypertension. Even Alzheimer’s disease may be partly attributable to obesity and physical inactivity.
“The diet in the U.S. and other nations has changed dramatically in the last 50 years or so, with highly processed foods readily and cheaply available at any time of the day or night,” Ali Güler, a professor of biology at the University of Virginia, said. “Many of these foods are high in sugars, carbohydrates and calories, which makes for an unhealthy diet when consumed regularly over many years.”
In a study published Thursday in the journal Current Biology, Güler and his colleagues demonstrate that the pleasure center of the brain that produces the chemical dopamine, and the brain’s separate biological clock that regulates daily physiological rhythms, are linked, and that high-calorie foods — which bring pleasure — disrupt normal feeding schedules, resulting in overconsumption. Using mice as study models, the researchers mimicked the 24/7 availability of a high-fat diet, and showed that anytime snacking eventually results in obesity and related health problems.
Güler’s team found that mice fed a diet comparable to a wild diet in calories and fats maintained normal eating and exercise schedules and proper weight. But mice fed high-calorie diets laden with fats and sugars began “snacking” at all hours and became obese.
Additionally, so-called “knockout” mice that had their dopamine signaling disrupted — meaning they didn’t seek the rewarding pleasure of the high-fat diet — maintained a normal eating schedule and did not become obese, even when presented with the 24/7 availability of high-calorie feeds.
“We’ve shown that dopamine signaling in the brain governs circadian biology and leads to consumption of energy-dense foods between meals and during odd hours,” Güler said.
Other studies have shown, Güler said, that when mice feed on high-fat foods between meals or during what should be normal resting hours, the excess calories are stored as fat much more readily than the same number of calories consumed only during normal feeding periods. This eventually results in obesity and obesity-related diseases, such as diabetes.
Speaking of the modern human diet, Güler said, “The calories of a full meal may now be packed into a small volume, such as a brownie or a super-size soda. It is very easy for people to over-consume calories and gain excessive weight, often resulting in obesity and a lifetime of related health problems.
“Half of the diseases that affect humans are worsened by obesity. And this results in the need for more medical care and higher health care costs for individuals, and society.”
Güler said the human body, through thousands of years of evolution, is hard-wired to consume as much food as possible as long as it’s available. He said this comes from a long earlier history when people hunted or gathered food and had brief periods of plenty, such as after a kill, and then potentially lengthy periods of famine. Humans also were potential prey to large animals and so actively sought food during the day, and sheltered and rested at night.
“We evolved under pressures we no longer have,” Güler said. “It is natural for our bodies as organisms to want to consume as much as possible, to store fat, because the body doesn’t know when the next meal is coming…. https://www.sciencedaily.com/releases/2020/01/200103111717.htm

Citation:

Study finds dopamine, biological clock link to snacking, overeating and obesity
Date: January 3, 2020
Source: University of Virginia
Summary:
A new study finds that the pleasure center of the brain and the brain’s biological clock are linked, and that high-calorie foods — which bring pleasure — disrupt normal feeding schedules, resulting in overconsumption.

Journal Reference:
Ryan M. Grippo, Qijun Tang, Qi Zhang, Sean R. Chadwick, Yingnan Gao, Everett B. Altherr, Laura Sipe, Aarti M. Purohit, Nidhi M. Purohit, Meghana D. Sunkara, Krystyna J. Cios, Michael Sidikpramana, Anthony J. Spano, John N. Campbell, Andrew D. Steele, Jay Hirsh, Christopher D. Deppmann, Martin Wu, Michael M. Scott, Ali D. Güler. Dopamine Signaling in the Suprachiasmatic Nucleus Enables Weight Gain Associated with Hedonic Feeding. Current Biology, 2020; DOI: 10.1016/j.cub.2019.11.029

Here is the press release from the University of Virginia:

Study finds dopamine, biological clock link to snacking, overeating and obesity
by University of Virginia
Coinciding with this increase in weight are ever-rising rates of heart disease, diabetes, cancer and health complications caused by obesity, such as hypertension. Even Alzheimer’s disease may be partly attributable to obesity and physical inactivity.
“The diet in the U.S. and other nations has changed dramatically in the last 50 years or so, with highly processed foods readily and cheaply available at any time of the day or night,” Ali Güler, a professor of biology at the University of Virginia, said. “Many of these foods are high in sugars, carbohydrates and calories, which makes for an unhealthy diet when consumed regularly over many years.”
In a study published Thursday in the journal Current Biology, Güler and his colleagues demonstrate that the pleasure center of the brain that produces the chemical dopamine, and the brain’s separate biological clock that regulates daily physiological rhythms, are linked, and that high-calorie foods—which bring pleasure—disrupt normal feeding schedules, resulting in overconsumption. Using mice as study models, the researchers mimicked the 24/7 availability of a high-fat diet, and showed that anytime snacking eventually results in obesity and related health problems.
Güler’s team found that mice fed a diet comparable to a wild diet in calories and fats maintained normal eating and exercise schedules and proper weight. But mice fed high-calorie diets laden with fats and sugars began “snacking” at all hours and became obese.
Additionally, so-called “knockout” mice that had their dopamine signaling disrupted—meaning they didn’t seek the rewarding pleasure of the high-fat diet—maintained a normal eating schedule and did not become obese, even when presented with the 24/7 availability of high-calorie feeds.
“We’ve shown that dopamine signaling in the brain governs circadian biology and leads to consumption of energy-dense foods between meals and during odd hours,” Güler said.
Other studies have shown, Güler said, that when mice feed on high-fat foods between meals or during what should be normal resting hours, the excess calories are stored as fat much more readily than the same number of calories consumed only during normal feeding periods. This eventually results in obesity and obesity-related diseases, such as diabetes.
Speaking of the modern human diet, Güler said, “The calories of a full meal may now be packed into a small volume, such as a brownie or a super-size soda. It is very easy for people to over-consume calories and gain excessive weight, often resulting in obesity and a lifetime of related health problems.
“Half of the diseases that affect humans are worsened by obesity. And this results in the need for more medical care and higher health care costs for individuals, and society.”
Güler said the human body, through thousands of years of evolution, is hard-wired to consume as much food as possible as long as it’s available. He said this comes from a long earlier history when people hunted or gathered food and had brief periods of plenty, such as after a kill, and then potentially lengthy periods of famine. Humans also were potential prey to large animals and so actively sought food during the day, and sheltered and rested at night.
“We evolved under pressures we no longer have,” Güler said. “It is natural for our bodies as organisms to want to consume as much as possible, to store fat, because the body doesn’t know when the next meal is coming.
“But, of course, food is now abundant, and our next meal is as close as the kitchen, or the nearest fast-food drive-through, or right here on our desk. Often, these foods are high in fats, sugars, and therefore calories, and that’s why they taste good. It’s easy to overconsume, and, over time, this takes a toll on our health.”
Additionally, Güler said, prior to the advent of our electricity-powered society, people started the day at dawn, worked all day, often doing manual labor, and then went to sleep with the setting of the sun. Human activity, therefore, was synchronized to day and night. Today, we are working, playing, staying connected—and eating—day and night. This, Guler said, affects our body clocks, which were evolved to operate on a sleep-wake cycle timed to daytime activity, moderate eating and nighttime rest.
“This lights-on-all-the-time, eat-at-any-time lifestyle recasts eating patterns and affects how the body utilizes energy,” he said. “It alters metabolism—as our study shows—and leads to obesity, which causes disease. We’re learning that when we eat is just as important as how much we eat. A calorie is not just a calorie. Calories consumed between meals or at odd hours become stored as fat, and that is the recipe for poor health.”
________________________________________
Explore further
Researchers identify neurons that control brain’s body clock
________________________________________
More information: Ryan M. Grippo et al, Dopamine Signaling in the Suprachiasmatic Nucleus Enables Weight Gain Associated with Hedonic Feeding, Current Biology (2020). DOI: 10.1016/j.cub.2019.11.029
Journal information: Current Biology
Provided by University of Virginia

In other words, much of the obesity problem is due to personal life style choices and the question is whether government can or should regulate those choices.

Personal Responsibility:

There is only one person responsible for your life and the vocation you have chosen. That person is the one you see in the mirror in the morning when you wake up. Don’t blame God, your boss, your parents, your former teachers, your coach, your co-workers or your dog. You and only you are responsible for your work life and what you have achieved. The sooner you accept this notion, the sooner you will begin to make changes that lead to a happier and more productive life and career. http://www.corethemes.com/coreconcepts/

It’s all about ME unless I have to take responsibility for ME. The same brilliant minds who think the government can substitute for family have fostered a single parenthood rate of 70% in the African-American community and about 50% for the population as a whole. Given the child abuse and foster care numbers, this plan hasn’t worked well. Sometimes folks have to be responsible for their choices.

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Even when food comes to food deserts, lifestyle reigns

10 Feb

Here’s today’s COMMENT FROM AN OLD FART which is actually an update. Moi wrote in ‘Food deserts’: Just how much does personal choice have to do with it?
The Seattle Times published an opinion piece, Op-ed: Bringing relief to food deserts in King County by Anne Vernez Moudon and Adam Drewnowski:

City and county leaders should take more aggressive action to bring relief to food deserts with aggressive development policies and incentives, according to guest columnists Anne Vernez Moudon and Adam Drewnowski. http://seattletimes.com/html/opinion/2019699347_moudondrewnowskiopedxml.html

Here is the definition of a “food desert”:

Definition for food desert:Web definitions: A food desert is a district with little or no access to foods needed to maintain a healthy diet but often served by plenty of fast food… en.wikipedia.org/wiki/Food_desert

That got moi thinking whether the issue isn’t as much personal choice as “food dessert.”

First, there is the New York Times article, Studies Question the Pairing of Food Deserts and Obesity by Gina Kolata:

It has become an article of faith among some policy makers and advocates, including Michelle Obama, that poor urban neighborhoods are food deserts, bereft of fresh fruits and vegetables.
But two new studies have found something unexpected. Such neighborhoods not only have more fast food restaurants and convenience stores than more affluent ones, but more grocery stores, supermarkets and full-service restaurants, too. And there is no relationship between the type of food being sold in a neighborhood and obesity among its children and adolescents.
Within a couple of miles of almost any urban neighborhood, “you can get basically any type of food,” said Roland Sturm of the RAND Corporation, lead author of one of the studies. “Maybe we should call it a food swamp rather than a desert,” he said.
Some experts say these new findings raise questions about the effectiveness of efforts to combat the obesity epidemic simply by improving access to healthy foods. Despite campaigns to get Americans to exercise more and eat healthier foods, obesity rates have not budged over the past decade, according to recently released federal data.
“It is always easy to advocate for more grocery stores,” said Kelly D. Brownell, director of Yale University’s Rudd Center for Food Policy and Obesity, who was not involved in the studies. “But if you are looking for what you hope will change obesity, healthy food access is probably just wishful thinking.”
Advocates have long called for more supermarkets in poor neighborhoods and questioned the quality of the food that is available. And Mrs. Obama has made elimination of food deserts an element of her broader campaign against childhood obesity, Let’s Move, winning praise from Democrats and even some Republicans, and denunciations from conservative commentators and bloggers who have cited it as yet another example of the nanny state….
Some researchers and advocates say that further investigation is still needed on whether grocery stores and chain supermarkets in poor neighborhoods are selling produce that is too costly and of poor quality. “Not all grocery stores are equal,” said John Weidman, deputy executive director of the Food Trust, an advocacy group in Philadelphia. http://www.nytimes.com/2012/04/18/health/research/pairing-of-food-deserts-and-obesity-challenged-in-studies.html?_r=0

http://drwildaoldfart.wordpress.com/tag/op-ed-bringing-relief-to-food-deserts-in-king-county/
Well duh, it appears that lifestyle choice has a great deal to do with good food choices.

Patti Neighmond reported in the NPR story, It Takes More Than A Produce Aisle To Refresh A Food Desert:

In inner cities and poor rural areas across the country, public health advocates have been working hard to turn around food deserts — neighborhoods where fresh produce is scarce, and greasy fast food abounds. In many cases, they’re converting dingy, cramped corner markets into lighter, brighter venues that offer fresh fruits and vegetables. In some cases, they’re building brand new stores.
“The presumption is, if you build a store, people are going to come,” says Stephen Matthews, professor in the departments of sociology, anthropology and demography at Penn State University. To check that notion, he and colleagues from the London School of Hygiene and Tropical Medicine recently surveyed residents of one low-income community in Philadelphia before and after the opening of a glistening new supermarket brimming with fresh produce.
What they’re finding, Matthews says, is a bit surprising: “We don’t find any difference at all. … We see no effect of the store on fruit and vegetable consumption.”
Now, to be fair, the time was short. The store was only open for six months before residents were surveyed. Matthews says most residents knew that the store was there and that it offered healthy food. But only 26 percent said it was their regular “go to” market. And, as might be expected, those who lived close to the store shopped there most regularly.
Matthews says the findings dovetail with other work, and simply point to the obvious: Lots more intervention is needed to change behavior. For one thing, we’re all used to routine, and many of us will just keep shopping where we’ve been shopping, even if a newer, more convenient and bountiful store moves in.
But more than that, he says, many people, particularly in low-income food deserts, just aren’t used to buying or preparing healthy meals — they haven’t had the opportunity, until now.
Alex Ortega, a public health researcher at the University of California, Los Angeles, agrees that providing access to nutritious food is only the first step.
“The next part of the intervention is to create demand,” he says, “so the community wants to come to the store and buy healthy fruits and vegetables and go home and prepare those foods in a healthy way, without lots of fat, salt or sugar.”
Ortega directs a UCLA project that converts corner stores into hubs of healthy fare in low-income neighborhoods of East Los Angeles. He and colleagues work with community leaders and local high school students to help create that demand for nutritious food. Posters and signs promoting fresh fruits and vegetables hang in corner stores, such as the Euclid Market in Boyle Heights, and at bus stops. There are nutrition education classes in local schools, and cooking classes in the stores themselves….
The jury’s still out on whether these conversions of corner stores are actually changing people’s diets and health. The evidence is still being collected. http://www.npr.org/blogs/thesalt/2014/02/10/273046077/takes-more-than-a-produce-aisle-to-refresh-a-food-desert

In other words, much of the obesity problem is due to personal life style choices and the question is whether government can or should regulate those choices.

Personal Responsibility:
There is only one person responsible for your life and the vocation you have chosen. That person is the one you see in the mirror in the morning when you wake up. Don’t blame God, your boss, your parents, your former teachers, your coach, your co-workers or your dog. You and only you are responsible for your work life and what you have achieved. The sooner you accept this notion, the sooner you will begin to make changes that lead to a happier and more productive life and career. http://www.corethemes.com/coreconcepts/

It’s all about ME unless I have to take responsibility for ME. The same brilliant minds who think the government can substitute for family have fostered a single parenthood rate of 70% in the African-American community and about 50% for the population as a whole. Given the child abuse and foster care numbers, this plan hasn’t worked well. Sometimes folks have to be responsible for their choices.

Blogs by Dr. Wilda:

COMMENTS FROM AN OLD FART ©
http://drwildaoldfart.wordpress.com/

Dr. Wilda Reviews ©
http://drwildareviews.wordpress.com/

Dr. Wilda ©
https://drwilda.com/