In countries around the world, people take different approaches to healthy eating. In Argentina, many people sip appetite-suppressing Yerba mate tea, while Ethiopians nibble bread made from a mineral-rich, protein-packed grain called teff.
Here are a few of the savviest, most surprising ways people around the world stay trim and satisfied without sacrificing taste.
Okinawans have historically been some of the healthiest, most disease-free people in the world. Researchers studied more than 900 people from Okinawa who made it past 100 years old and found that their arteries remained young-looking and clean into old age. Those Japanese elders were at much lower risk of developing coronary heart disease or suffering strokes.
But that healthy paradigm is beginning to shift as more western foods seep into the Okinawan diet.
On the Italian island of Sardinia, men and women often live beyond 100 and enjoy a slightly different twist on the Mediterranean diet, with lots of whole-grain breads, fresh vegetables, and goat cheese.
People in some parts of Uruguay, Paraguay, Chile, and Brazil also drink the grassy beverage. It tastes more bitter than other kinds of tea.
Staying well hydrated probably helps tea drinkers stay trim, too. Scientists have discovered that people who drink more water are consistently more satisfied and eat fewer calories on a daily basis. For those benefits, it doesn't really matter whether you hydrate with water, coffee, or tea, according to the medical myth busters at the BBC.
A healthy dose of fiber in your diet is one of the best ways to stay full and keep the digestive tract humming along smoothly.
According to the Washington Post, a quarter-cup serving of dry teff is a nutritious wonder-food.
It "offers 7 grams of protein, 4 grams of dietary fiber, 25% of your daily recommended magnesium, 20% of your daily iron and 10% of your daily calcium, Vitamin B6 and zinc," health education specialist Elaine Gordon wrote in the Post.
Brazil's eating guidelines encourage people to eat regularly, carefully and "whenever possible, in company." They also encourage Brazilians to avoid fast food, make time to cook at home, and share their favorite recipes with friends and colleagues.
"Make the preparation and eating of meals privileged times of conviviality and pleasure," the guidelines read.
Studies show that people who cook at home eat less sugar and consume fewer calories.
Acai berries come from South American palm trees and are a great source of antioxidants and fiber, according to the Mayo Clinic.
High-fiber Korean diets include generous helpings of cabbage, sprouts, squash, whole grains, soups, kimchi, fish, and fermented soy.
Eating too much red meat, meanwhile, can lead to heart disease and is linked with higher colorectal cancer rates. By keeping red meat consumption low, a traditional Korean diet helps people avoid these risks.
The study participants also improved their blood pressure and were less at risk for developing cardiovascular diseases.
Lunch couriers in India deliver home-cooked meals from a person's own family to their work spot at mid-day. These couriers are called dabbawalas, or "one who carries a box."
Preparing more food at home is a great way to stay trim.
Scientists have found that people who eat out more tend to be fatter and consume more calories than those who cook at home. People also generally gobble up more saturated fat, salt, and cholesterol when they carry out or eat at restaurants. Food prepared at home, on the other hand, tends to have more belly-filling fiber, which is a healthier (and cheaper) way to stay satisfied.
Scientists compared portion sizes in Paris and Philadelphia, and discovered that Philly eateries had an average portion size 25% larger than Parisian meals.
Plus, while the French may be known for their heavy bistro meals of steak frites, they often balance those out with lighter dinners at home. The last meal of the day might be a simple soupe aux légumes, a mix of stock and veggies, or a richer, velvety velouté of leeks and potatoes.
Satiety can determined by the fat content of a meal, the sights and smells of food on the table, and the sensation of a dish when it hits the tongue.
Studies show that people who eat a wider variety of healthy foods like fruits, vegetables, and whole grains tend to have trimmer waistlines and lower blood pressure levels.
French children learn early on to try a range of foods, but meals in French schools aren't always perfectly healthy. They can include plenty of French frites and hot spinach doused in heavy cream.
But there are signs that is changing, and waistlines are expanding as a result. A recent survey of more than 104,000 French people found that more adults are indulging in sweet, processed snacks in between meals than ever before.
Having more of these energy-dense, sugary, salty, and fatty foods on hand can lead people to overeat.
Plus, working out outside may be a better way to stick to your exercise routine. A small study of Canadian women in 2015 found that those who exercised outside were more likely to keep up their workout routines than those who did their sweating indoors.
Fatty fish like salmon and tuna carry all kinds of benefits for your waistline. They can slow the rate of heart-clogging plaque growth, lower cholesterol, and reduce the amount of fat in your blood. They're also a complete source of belly-filling protein.
Source: Swedish National Food Agency
But one major drawback of the Icelandic diet is that due to the harsh climate, there isn't a ton of fresh produce to eat.
Regular saunas are also associated with a significant reduction in stroke risk.