FOOD, FACTS and FADS

Exploring the sense and nonsense of food and health


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The Obesity Epidemic: Why and What Can We Do?

Is it Genes or the Environment?  That is the big question on why the obesity epidemic happened in the first place. It is becoming apparent (my opinion) that since the 1960 ‘s something happened in our food environment that caused this serious public health problem and no one seems to quite know what to do about it .Preview (opens in a new window)

Many causes have been suggested.  Collectively, most likely, all have had some influence. On the list is portion size, increased food availability (restaurant and fast foods), stress and lack of sleep, ultra-processed foods (food in a box), sedentary behavior, lack of will power, food addiction, genetics and physiology, and even the microwave oven gets the blame. From this list, our genes and physiology have not changed considerably (my opinion) so the cause(s) mainly must lean toward environmental factors. For example, many researchers promote the role of insulin resistance and other hormones (leptin, ghrelin) as causative; however I would presume that the  human body has always had these factors at play when body weight is regulated normally.  If hormones are to blame, what factors caused their normal function to be altered?

The following excellent article originally published on The Conversation takes us from the beginning to where we stand now and offers some possible fixes that may help to stop this phenomenon from getting any worse than it already is. Another fact is that even though it affects our health care system and health care costs, not much mention is made from the political or community factions; if this was an infectious disease problem, reactions from all parties would be quite different.

A real-life situation offers an explanation about what may be occurring here. “Genetic analysis of the Pima Indian population living in Arizona has identified a number of genes that may be responsible for this group’s tendency to store excess body fat. When this genetic susceptibility is combined with an environment that fosters a sedentary lifestyle and consumption of high-calorie, high-fat (or carbohydrate) processed foods, the outcome is the strikingly high incidence of obesity seen in this population.”  Nutrition: Science and Applications, Smolin and Grosvenor, Third Edition (2013).

The Pima Indians living in Mexico with entirely different lifestyles and diet (farmers) have an average Body Mass Index of about 23.0 while the Arizona population with the same genetic background have a BMI about 30.0  BMI’s over 30.0 signify obesity. while those below 25.0 have been stated as having a healthy weight.

This may be too simple an explanation for our epidemic and it is understood that this public health dilemma has many more complex causes.

It still remains after all that the the simple fix of “eat less, move more” has not helped us to significantly deal with this  phenomenon and the fixes will take a lot more effort in order to stem this problem. A previous post on solutions can be found HERE. Any suggestions or comments will be welcome.

CLICK HERE.


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The Flu Vaccine: Why?

It’s flu season again and again many people are opting to not get the flu shot. Every year there are seasonal outbreaks that usually result in pandemics which is a worldwide epidemic. The biggest  pandemic to date was called the “Spanish flu” that occurred in 1918 to 1919. This strain was thought to have originated in birds and estimates suggest that between 20 and 100 million people died, particularly young adults.

The disease is believed to take its name from the Italian word for “influence”, a reference either to the influence of heavenly bodies or to the “influence of the cold.” The first recorded epidemic occurred in 1510, and since  then there have been about 31 pandemics. The most notable pandemic was the 1918 outbreak; others took place in 1957 (the “Asian” flu) and in 1968 (the (“Hong Kong” flu.)  Alcamo’s Fundamentals of Microbiology, Jeffrey C. Pommerville, Eighth Edition

For statistics from last season, CLICK HERE.

For a previous post on “herd” immunity”

CLICK HERE.


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The Flu : A 100 Year-old Lesson?

A Virus

The influenza season is soon to be over for this year; however, it has been a long and relatively severe one.   Perhaps we can learn a lesson from remembering the 19818 flu pandemic.  We had no flu vaccine 100 years ago and as more of us do not get the flu shot during a given year, we could approach that level of morbidity and mortality again – a frightening thought. Many people do not get a flu shot these days and therefore indirectly and unknowingly contribute to this severity.

Part of the problem involves a phenomenon called “herd immunity” and we’re not talking cattle here.  It implies that if enough people in a population are immunized against certain diseases, then it is very difficult for those diseases to spread. For example, when about 90 percent of the population is vaccinated, the spread of the disease is stopped. In other words, the 10% of the herd is susceptible but there are so many vaccinated people there is less chance that the 10% would be exposed to the disease.

Another example: In 2003, measles outbreaks became more prevalent in the UK. Part of the reason was that many parents were not having their children vaccinated with the MMR vaccine due to its alleged association with autism. Later studies failed to support this association; however due to a lack of herd immunity the increased outbreaks occurred.

So next fall when the next flu vaccine (although not perfect)  becomes available, think about a hundred years ago and get a flu shot for the “herd”.

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The “Magic” of Weight Loss?

It has become more and more obvious that the simple advice for weight loss, i.e. “eat less” just does not work for many people. The body fights to maintain the weight it wants, and often that is not the weight we want. For most dieters, this results in losing a few pounds and gaining them back over and over again. Weight loss claims by many weight loss plans are “magical” and not realistic. How many times have you seen them display their results in terms of how their diet resulted in long-term weight loss? There is always the disclaimer that accompanies their before and after photos that says in fine print something like “results are not typical for every one.”

This was so obvious when the study on the “Biggest Loser” participants came to light that all but one in one of the seasons had gained a large percentage of their weight back. That is not to say their weight loss was futile since even a loss of 5-10% of body weight can have health benefits.

It has been reported that many people are just giving up on dieting – no wonder. Weight loss is difficult and weight maintenance is even more difficult based on past research and should not be portrayed as anything other than that.

My favorite quotes on the subject reflect how many dieters feel:

“In two decades I’ve lost a total of 789 pounds. I should be hanging from a charm bracelet”Erma Bombeck

“I am more  than my measurements. The cycle of body shaming needs to end. I’m over it…My body is MY body. I’ll call the shots.” Ashley Graham

“I’m not going to miss 95% of life to weigh 5% less.” Dan Pearce, Single Dad Laughing

“I finally figured out the big, elusive secret to weight loss. Don’t eat! Who knew?” Richelle E. Goodrich, Smile Anyway

“Healthy living is a learnable skill.” Claude Viens, The most powerful weight loss device ever made; The human brain

The obesity epidemic is becoming a global phenomenon. The obesity industry also continues to grow. With our current food environment, who knows when it may end

CLICK HERE.


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The Obesity Epidemic: Nature or Nurture?

Fat shaming is found in many aspects of our culture. The obese are described as fat and lazy and looked upon with disdain by even some of the health professionals they seek out to solve many of their health care needs. Perhaps we need to examine the complexities of the interactions that may have contributed to this so-called obesity epidemic to gain a better understanding of what the obese population has to contend with.

In 1960, only 13.4 % of Americans were overweight or obese. By 1990, about 23% were obese, and today, only two decades later, almost 36% are obese. Obesity affects both men and women and all racial and ethnic groups. As far as we know, we still had the same genes and physiology during these decades; however, the food environment or culture had obviously changed.

“The interplay between genetics and lifestyle is often illustrated by the higher incidence of obesity in Pima Indians living in Arizona than in a genetically similar group of Pima Indians living in Mexico. When this genetic susceptibility is combined with an environment that fosters a sedentary lifestyle and consumption of a calorie dense diet, the outcome is the strikingly high incidence of obesity seen in this population. The Pima Indians of Mexico are farmers who work in the fields and consume the food they grow. On the other hand, the Arizona Pima eat the high-calorie, high-fat processed foods,  found in the Standard American Diet (SAD) and lead a more sedentary lifestyle. Both groups have  higher rates of obesity due to their genetic susceptibility; however, the average BMI or the Mexican Pima is significantly lower than that of their American counterparts.” Smolin and Grosvenor, Nutrition: Science and Applications, Third Edition.

Check out my previous post HERE.

CLICK HERE.


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The Obesity Epidemic: Why?

Diet and Health: With key to the calories. Lulu Hunt Peters, 1918

By Sally J. Feltner, PhD, RDN

In 2013, the American Medical Association House of Delegates approved a resolution classifying obesity as “a disease state with multiple pathophysiological aspects requiring a range of interventions.” We now accept the fact that obesity can lead to diabetes, heart disease, and cancer risks.

Today, 2.1 billion people – nearly 30% of the world’s population – are either obese or overweight, according to new data from 188 countries. The U.S. Centers for Disease Control and Prevention analysis said, “About 38 percent of U.S. adults aged 20 and older are obese as are more than 17 percent of children aged 6 to 11, federal data shows.”

“The global problem affects all countries, income levels, age groups and accounts for over 3-4 million deaths a year with estimated health costs of over $2 trillion a year.” (International Journal of Obesity).

There is no one cause. Many people still continue to blame the obese person’s lack of willpower and insist that if they just ate less and moved more, their weight would not be a problem. This may explain some cases of obesity, but how could more than 2 billion people worldwide begin to make poor choices about their food intake and allow themselves to become fat. Moreover, this upward trend earnestly began in the late 1980’s and has continued to the present. Obesity rates were just 13.4% in 1980 but reached 34.3% by 2008. So what happened to cause this sharp rise? – More than likely a lot of things.

In 2016, an article by Bruce Y. Lee, Associate Professor of International Health at Johns Hopkins Bloomberg School of Public Health succinctly describes his opinions on what factors changed to help create this epidemic. He states that obesity is a result of the breakdown of three major systems that include biological, social, and environmental factors.

Biological Systems

Our metabolic systems have been affected to some extent by non-stop dieting. A plethora of fad diets and exercise gimmicks grew into a huge obesity industry. Diet books topped Amazon and best seller lists while the supplement industry went berserk over worthless and sometimes dangerous weight loss aids. Americans responded and when surveyed, a large majority of respondents said they were “on a diet.”

Even TV reality shows (The Biggest Loser) resulted in weight loss that lowered the metabolism of almost all participants gained back their hard-fought  loss. As each weight loss attempt occurs, the cycle of weight loss/regain occurs over and over again. The body is threatened by a perceived starvation state and attempts to prevent it by putting forth metabolic and hormonal mechanisms to alleviate the threat. Obesity research has shown that nearly 95% of dieters regain their weight loss in a few years.

Social Systems

Social media, friends and family, cultural beliefs, TV advertising, and personal responsibility are all important in shaping our behaviors about eating, appearance, and body image.

Advertisements in the media have promoted the obesity epidemic by making claims that their products will magically transform your body into a svelte image and allow you to finally wear that bikini you bought years ago and that weight loss is easy. Most weight loss diets promise success by showing us before and after pictures of supposedly successful weight losers. What they do not say but disclaim in the small print that you usually can’t read is that results don’t always occur as presented. Most weight loss programs do not include an exercise component nor do they offer any behavioral counseling. Almost all have no disclosure about their success rates of weight loss and maintenance.

Environmental Systems

Determining what a healthy diet consists of is difficult enough – opinions abound and debates continue. This results in confusion and misinformation for the average consumer. They tend to give up on just what exactly is the best way to eat.

So many individuals are exposed to reliance on cheap foods found in the fast food industry. They may live in food deserts defined as parts of the country usually found in impoverished areas devoid of easy access to fresh fruit, vegetables, and other healthful whole foods. This is largely due to a lack of grocery stores, farmers’ markets, and other healthy food choices.

The food industry has been instrumental in developing ultra-processed foods that hardly resemble “real” foods. Snacking has become a national pastime and is dominating several of the inner aisles of the supermarkets. Snacks are abundant in every gas station, convenient store, or vending machine that tempt you to increase their profits.

Additionally, the food industry promotes the intake of sugar, fat and salt by attempting to reach what they call “the bliss point,” defined by the precise amount of sweetness that makes food and drink most enjoyable. You can find the results in the sugary cereals and sweetened beverage aisles in the supermarkets.

People do not cook anymore leading to procuring your meals outside the home. Restaurant portions have become gigantic compared to what they were in past decades. For example, a typical serving of theater popcorn was 270 calories (5 cups) in 1970 compared to now that is typically 630 calories (one tub). Some restaurant meals contain as many calories as we need in an entire day. The average U.S. intake increased 455 kcal/day, a 20% increase from 1970 to 2009. (Dr. Stephen Guyenet, The American Diet, 2012). From research studies we have found that the more food that is put in front of people, the more they eat. We now are familiar with the term “supersize” and the concept of “all you can eat buffets.”

The complexities of the obesity epidemic/pandemic are impossible to fully comprehend as well as their need to be “fixed” to reverse or at least slow down the trend. There are some solutions to accomplish this but they will require much cooperation between politics, community, medicine, research, government, and the public.

If America’s obesity trend continues at its current pace, all 50 states could have obesity rates above 44 percent by 2030, according to a new report from Trust for America’s Health and the Robert Wood Johnson Foundation. Although important, we need to stop just focusing on what we eat, but equally important on how we eat to fix what contributed to the epidemic in the first place.


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The Nonsense of Obesity?

 

Obesity in International Perspective

Obesity in International Perspective (Photo credit: Peter Forret)

What is causing the obesity epidemic is far from simple.  It appears to be related to a multitude of factors summarized here.  Among the culprits:

  • Portion size
  • Eating out more often
  • Fewer home-cooked meals
  • More processed foods
  • Too much sitting time: TV, video games, computers, on the job
  • School budget cuts – physical education classes, e.g.
  • Less activity during and after school – does anyone “play” outside anymore?
  • Mindless eating – snacking on calorie dense foods — chips, crackers, cakes, cookies

For an excellent article on causes, CLICK HERE.

For the statistics:

CLICK HERE.

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