The great recession
What do economics have to do with health? At most universities they're not even in the same building! But it turns out that a dip in the economy can lead to a rise in our weight according to a study done by John Hopkins. Researchers found that from 2008 to 2012—the period known as the great recession—weight gain was strongly correlated with the rise in unemployment, increasing the risk of obesity by 21 percent. This makes sense as one of the first things to go when our budgets get tight are luxuries like health food and gym memberships, not to mention the loss of health insurance that often accompanies a job loss. However, it may help to remember that there are many low-cost or free ways to protect your health—and an investment in you is the best one you can make. For example, here are tricks to spend less on a gym membership and here are healthy food swaps that save you money.
How high you are
No we're not talking about the wave of pot legalization sweeping the country (although that probably would affect your weight too) but rather how high up you live. There's a reason that Colorado is the both the slimmest and the steepest state in the nation. The altitude at which you live is strongly correlated with your weight, with each gain in altitude corresponding with a drop in weight, according to a study done by the U.S. Air Force. But don't sell your beach-front property and head for the hills just yet—the effect can be balanced out by other factors known to prevent against obesity where you live, like outdoor greenery, strong social ties, and opportunities to go outside. Case in point: Hawaii is the third thinnest state in America, and it's the definition of sea level.
It's a generation thing
iStock/Eva Katalin Kondoros
Ever wondered why your grandma never exercised a day in her life and yet wore a tiny wedding dress that you could never hope to fit into even though you run marathons? Some of it may be due to the difference in generations you were both born into. Bad news for young 'uns: Millennials, Gen Y, and Gen X all need to eat less and exercise more to stave off obesity than their forefathers did, according to a study from York University. And it's not just the fact that we have Netflix and take out at our fingertips. Rather, the researchers found that the average metabolism of both men and women has slowed, even after controlling for factors like disease, diet, and fitness. Why? We have no solid answers yet but in the meantime, if you're under 40 at least you can take comfort that you're not alone in your struggle.
That cursed smog
The effects of environmental pollutants go far beyond wheezing and sneezing. Rats exposed to highly polluted air were not only much more likely to become obese, according to a study done by Duke University, but also had a greater risk of heart disease, diabetes, and metabolic syndrome. And it's not just limited to rodents. People who live close to roadways with a high level of air pollution are also more likely to gain weight, says a study from the University of Southern California. Unfortunately air pollution is likely not under your direct control but we can all work together to lobby for and implement clean-air policies where we live, making for both a healthier physical and celestial body. And here are tricks to improve the air quality in your own house.
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Our delightfully warm and cozy homes and offices might be partly responsible for our less-delightful expanding waistlines, say researchers in a study published in the journal Cell. The scientists found that regular exposure to mildly cold weather—as would have been normal in the days before programmable thermostats—helps the human body regulate a healthy weight. The chilly air seems to increase metabolism by making the body work harder to cope with the changing conditions. Some proponents of "cold therapy" take daily ice baths or "shiver walks" but you don't have to be that extreme to see results, say the researchers. Just lowering your thermostat by a few degrees or turning the shower briefly to cold can help. Here's more on the science of how being cold is good for weight loss.
How many antibiotics you've taken
Antibiotics are one of the biggest miracles of modern medicine, no doubt about it. But those infection-fighting drugs may have unintended consequences. The more antibiotics a person takes during their lifetime, particularly during early childhood, the greater their risk of becoming obese, according to an NYU study. Researchers speculate that it has to do with killing healthy gut bacteria, decimating your microbiome along with the bad bugs, as good bacteria has been shown to help prevent weight gain. But if you were the kid with chronic ear infections, don't fret, you can rebuild your good gut bacteria by taking a probiotic and eating plenty of fermented foods such as yogurt, kefir, sauerkraut, and kimchi.
Fido and Fifi
Owning a pet, particularly a dog, slashes the human companion's risk of obesity, says the American Heart Association. Why? Dogs need to be walked daily and are often quite persistent, encouraging their owners to walk as well. But it's not just the extra exercise, especially since 40 percent of dog owners confess to not walking their dog on a regular basis. The researchers add that petting an animal greatly reduces stress and depression, two other known risk factors for weight gain. So if you do have a dog, make sure to walk them daily, and in the meantime soak up all the snuggles, wet kisses, and purrs you can.
The number on your paycheck
Income is one of the biggest factors correlated with obesity, with poor Americans being three times more likely to be obese than richer ones, according to a study published in Nutrition Reviews. Low-income people are less likely to have access to supermarkets with fresh foods (often living in "food deserts"), less likely to have health insurance, and less likely to live in neighborhoods where exercise outdoors is encouraged or even safe. Fortunately this is one area we can all help improve by working to better conditions in our own neighborhoods or helping out others nearby.
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Pesticides may help us grow stronger and more plentiful crops but many of the chemicals used in popular formulations are known "endocrine disruptors": They interfere with your body's metabolic systems. Pesticides hijack our metabolism by mimicking, blocking, or otherwise interfering with the body's natural hormones, according to a report issued by The Endocrine Society. Regular exposure to pesticides through food was correlated with an increase risk of both obesity and diabetes. Buying all organic may be one solution but for many people that doesn't fit in the budget. If money's tight you can also decrease your pesticide load by avoiding, or only buying organic of, the "dirty dozen", the most contaminated produce. Or you can always try growing some of your own fruits and vegetables. (Bonus: Gardening is great exercise!)
How many trees you can count from your window
Close proximity to parks, trails, and other types of green spaces is linked with lower body weight, according to research done by the American Diabetes Association. Being able to see, and more importantly walk to, greenery encouraged people to exercise more and made it feel, well, less like exercise. Parks make physical exertion feel like fun but even if you're not using them to exercise, simply being in the presence of nature has been shown to reduce stress, lower weight and improve your health overall. The vast majority of Americans already live within walking distance of some type of park so get out there and explore your neighborhood. Here are 16 ways to lose weight by walking.
All that stuff on the food label you don't recognize
You already know that processed foods do no favors for your waistline but it turns out it's not just the empty calories and trans fats doing the damage. Some of the most popular food additives are linked with weight gain and obesity, according to a study done by Georgia State University. Emulsifiers, which are added to most processed foods for texture and to extend shelf life, are one of the worst offenders as they interfere with good gut bacteria. But some artificial flavorings, artificial sweeteners, preservatives, and even the food packaging have also been linked in research to obesity. Here are more secrets food manufacturers don't want you to know.