Space & Innovation

Soda Sales Drop, But Americans' Weight Going Up

Sales of sugary sodas have been dropping for 30 years, yet more Americans are overweight than ever. Why? Continue reading →

For years doctors and politicians have tried to curb the American thirst for sugary sodas. In 2012, for example, New York City mayor Michael Bloomberg banned the sale of large containers of sodas there. When the measure was later overturned, a new tactic was adopted, according to The New York Post:

"Dr. Thomas Farley, Bloomberg's health commissioner, urged the feds to reconsider making sodas more expensive.
‘A soda tax is the simplest way to reduce consumption of sugary drinks, which are the biggest single contributor to the obesity epidemic in this country,'" according to Dr. Farley."

How the American Diet Has Changed: Photos

However the sales of cola and other carbonated drinks have been declining for years -- and in fact are at a 30-year low.

As a Fortune news story noted:

"The industry has found itself out of favor as consumers seek beverage alternatives to soda that they deem healthier, notably juices and flavored waters. Those alternatives don't contain as many calories as soda, and also don't include ingredients like the sweetener aspartame, which has fallen out of favor in recent years."

A Sugary Contradiction While the drop in sugary colas is good news for everyone except the beverage companies, this leads to an apparent contradiction: If it's true, as Dr. Farley and others have claimed, that soft drinks are the dominant contributor to the weekly caloric intake by most Americans, how can it be that the general population has gained weight over the past decades, at the same time that soda consumption has declined?

8 Amazing Things You Didn't Know About Teeth

If sugary drinks are being consumed less and less each year, then Americans should be losing weight instead of gaining it, all else being equal.

Dr. Rafael Perez-Escamilla, a Professor of Epidemiology and Public Health at Yale School of Public Health, explained this paradox in an e-mail to Discovery News: "The fact that the obesity epidemic in the USA remains unabated in spite of significant reductions in consumption of sugar sweetened beverages, including sodas, over the past years may be related to consumers simply replacing the lower consumption of calories from sugar-sweetened beverages with calories from other food products. In other words it is possible that individuals deciding to consume diet sodas or water instead of regular sodas, are not ‘saving' those calories but rather are simply consuming the same amount of calories or even more from other foods."

Dr. Perez-Escamilla adds, "Consumers may feel that it is fine to eat unhealthy foods in abundance because they are consuming a diet product."

Sugary Drinks Kill 184,000 People Every Year

Most of us have seen this at some point: the person who orders a double bacon cheeseburger with large fries -- with a large Diet Coke, just to offset the calories. Some scientists suggest that artificial sweeteners such as aspartame found in diet drinks may also contribute to the obesity problem.

With the help of mayor Bloomberg, lawmakers in other cities and states have put forth similar proposals to curb sugary soda consumption. As the Los Angeles Times reported last month:

"Alarmed by an obesity epidemic, two state lawmakers on Tuesday proposed a ‘health impact fee' of 2 cents per ounce on sugar-sweetened sodas and other drinks sold in California. The proposal by Democratic Assemblymen Richard Bloom of Santa Monica and Jim Wood of Healdsburg would add 24 cents to 12-ounce soft-drink cans, to be charged at the distributor level."

Woman Drinks Only Soda For 16 Years

The money raised by this soda tax would fund public health initiatives, but is largely intended to discourage sugary soda consumption -- an admirable goal, but a trend which has already been happening for 30 years and is likely to continue with or without the added tax.

Furthermore the money potentially raised by the tax on sugary drinks, while significant, is getting smaller each year as diet drinks, juices, and bottled water take a larger market share.

Dr. Perez-Escamilla acknowledged that sugary drinks are only a small part of a much larger problem: "the obesity epidemic requires addressing the whole dietary and beverages pattern and not just individual foods or beverages. For this to happen however, there are major policy and food/beverage ‘environment' shifts that are required." The fight over sugary sodas and taxes will continue.

"A characteristic of the American dietary that has persisted throughout years has been its abundance." This sentence is no less true today than when it was

published in the American Journal of Clinical Nutrition in 1959

. That abundance, however, comes with a cost: Americans eat too much. That excess consumption and often poor nutrition has brought with it a multitude of life-changing and often life-threatening diseases and conditions, including obesity, diabetes, heart disease, cancer and more. Although the number of Americans who are overweight or obese has been on a steady climb since the middle of the 20th century,

a recent report by the New York Times suggests

that efforts to abate this health crisis might be gaining ground thanks to a shift in public attitudes. For the first time since the federal government began tracking dietary intake over more than four decades of data collecting, the daily calorie intake of the average American showed a sustained decline. Read on to see how the American diet has changed since the middle of the 20th century.

Americans Falsely Believe Their Diet Is Healthy

While calorie counts have been on the downswing, calorie intake is still far above where it once stood. Americans' daily average caloric intake is over 500 calories higher than it was in 1970, when the average hovered around 2,169 calories per day. What does a more than 20 percent increase in caloric intake mean for the average American? Consider that a pound a fat contains 3,500 calories. Assuming that even a quarter of those calories represent excess energy beyond what's needed for daily maintenance levels, that translates into a pound of stored fat gained every month, or 12 additional pounds per year. Portion sizes have seen a similar increase over time.

According to the U.S. Department of Health & Human Services

, in the last two decades alone, food portions in American restaurants have doubled or in some cases tripled. Portion sizes began increasing in the 1970s and rose sharply in the 1980s. Many food portions greatly exceed USDA and FDA standard servings,

according to a study published in the American Journal of Public Health

. "The largest excess over USDA standards (700 percent) occurred in the cookie category, but cooked pasta, muffins, steaks and bagels exceeded USDA standards by 480 percent, 333 percent, 224 percent and 195 percent, respectively," the study found.

VIDEO: 4 Common Diet Myths Debunked

According to the U.S. Department of Agriculture (PDF)

, between the 1950s and 2000, Americans consumed on average 39 percent more refined sugars. Consumption of corn sweeteners, with high-fructose corn syrup leading the charge, octupled. On average, Americans consume an estimated 156 pounds -- yes, pounds -- of added sugar per capita every year. Excessive sugar intake can lead to all kinds of negative health outcomes, including but not limited to dental problems, obesity, diabetes, liver failure and more. These concerns are what led the

Food and Drug Administration (FDA) recently to propose

a change in food labeling that would recommend the daily intake of calories from added sugars not exceed 10 percent of total consumption. More than 70 percent of U.S. adults get over 10 percent of their daily calories from sugar.

7 Facts About Sugar That May Surprise You

Americans aren't just eating more sugars than they used to; we're also drinking more.

According to the Harvard School of Public Health

, before the 1950s, the standard soft drink size was 6.5 ounces. That decade, manufacturers started selling larger sizes, and by 1960 the 12-ounce can was everywhere. Fast forward 30 years, and 20-ounce bottles are ubiquitous. Today, single-use soft drinks can reach up to 64 ounces and have up to 700 calories. Since the 1970s, sugary drinks have grown from 4 percent of Americans' daily calorie intake to 9 percent. A quarter of Americans get at least 200 calories a day from soft drinks. Teens and children are particularly high consumers, too. Sugar drinks are the top calorie source for teenagers, and are consumed daily by an estimated 91 percent of children.

Does Soda Cause Violence?

Beginning in 1980, when USDA issued the first federal dietary guidelines implicating fats and cholesterol as a major source of Americans' health woes, particularly heart disease, the food industry began shifting formulas in their products that moved away from saturated fat and toward vegetable oils and carbohydrates. Low-fat diets became all the rage, with a bevy of product lines offering low-fat alternatives. What happened after Americans got turned on to low-fat foods? They got even fatter and less healthy. Foods may not have had as much saturated fat, but they made that up with an increase in sugar and refined grains, which kept calorie counts the same. The switch to hydrogenated vegetable oils and margarines also only increased health risks. Heart disease is still the number one killer in the United States, and we also have rising numbers of diabetes and obesity to contend with. In fact, despite numerous studies since the 1990s showing that low fat diets are ineffective at best and harmful at worst, the government continues to recommend a low fat diet.

FDA Bans Trans Fats - More Chemicals to Consider?

Go to the snack aisle of any supermarket or convenience store in the United States, and you'll find a wide array of potential options to satisfy any junk food craving. What do all of these foods have in common? They're all made of refined grains, in addition to other nutritionally deficient ingredients. Refined grains do not offer the same nutritional benefits as whole grains. The process by which refined grains are produced removes fiber, iron, vitamins and other nutrients,

according to the American Heart Association

. Examples of refined grains include white flour, corn flour and white rice. Not only have Americans turned to unhealthier grains for a greater share of their calories; modern wheat is also less nutritious than heritage grain varieties.

Why You Should Probably Stop Eating Wheat

As Americans increasingly eat out at restaurants more and consume more processed foods, salt intake has steadily increased across all age groups. The average American between ages 20 and 74 consumed close to 1,500 mg more sodium per day in 2006 than in 1971,

according to the Institute of Medicine of the National Academies

. The Centers for Disease Control and Prevention (CDC) recommends everyone ages 2 and up consume less than 2,300 mg per day, which is about a teaspoon a day. Some people with certain health risks, such as diabetes or high blood pressure, should limit that further to 1,500 mg per day. Eating too much salt increases water intake in the body, which leads to high blood pressure. Kidneys work overtime to deal with the excess sodium, and the increased blood volume puts a strain on the heart and blood vessels. At worst, a lifetime of a sodium surplus could lead to heart failure or stroke,

according to the Harvard School of Public Health

.

Fast Food Is Less Salty Abroad

In 1929, presidential candidate Herbert Hoover ran under the slogan "a chicken in every pot and a car in every garage." These items might seem common enough today, but Hoover was basically promising what were then considered luxuries to every American household. At the time of Hoover's campaign, "the few chickens raised for meat were sold directly to high-end restaurants, first-class dining cars, and luxury caterers,"

according to the Smithsonian Museum of American History

. Chickens were instead kept for their eggs, which are a valuable source of protein and other nutrients. Egg consumption peaked mid-century, and has been in decline ever since. The overblown connection between cholesterol in eggs and heart disease certainly contributed to Americans turning their back on eggs. But a decline in prices of another protein source, specifically chicken, also contributed to eggs falling out of favor. In the last half of the 20th century, poultry consumption went up more than three-fold, according to USDA data. Red-meat consumption saw a steady decline over the same period, with Americans eating roughly 10 percent fewer pounds per capita every year.

VIDEO: Stop Eating Food: The Soylent Experiment