Supplements can't substitute for a healthy diet, which supplies other potentially beneficial compounds besides vitamins and minerals. Foods also provide the synergy that many nutrients require to be efficiently used in the body. Still, for many people a basic multivitamin/mineral pill can provide some of the nutrients they may fall short on. Certain people may also need supplements of folic acid, vitamin B12, calcium, and vitamin D (see next slide).
Fruit and vegetables are low in calories and nutrient dense, which means they are packed with vitamins, minerals, antioxidants, and fiber. Focus on eating the recommended daily amount of at least five servings of fruit and vegetables and it will naturally fill you up and help you cut back on unhealthy foods. A serving is half a cup of raw fruit or veg or a small apple or banana, for example. Most of us need to double the amount we currently eat.
Vending machines in particular have come under fire as being avenues of entry into schools for junk food promoters. However, there is little in the way of regulation and it is difficult for most people to properly analyze the real merits of a company referring to itself as "healthy." Recently, the Committee of Advertising Practice in the United Kingdom launched a proposal to limit media advertising for food and soft drink products high in fat, salt or sugar. The British Heart Foundation released its own government-funded advertisements, labeled "Food4Thought", which were targeted at children and adults to discourage unhealthy habits of consuming junk food.
Potatoes often get a bad rap, but when it comes to weight loss they're hard-to-beat sources of scale-dropping fiber. According to the Cleveland Clinic, sweet potatoes will up the insoluble fiber in your diet, keep you full longer, and you can bake and eat one for just 114 calories. Just watch what you load it with — instead of cheese or sour cream, opt for good-for-you fillings like black beans, tomatoes, and bell peppers.
Speaking of things you find in the sea, oysters have also been shown to contribute to weight loss thanks to their impressive zinc content. One study found that obese people who consumed 30 milligrams of zinc per day—the equivalent of just six raw oysters—had lower BMIs, weighed less, and showed improvements in blood cholesterol levels. If oysters aren’t your thing, spinach, pumpkin seeds, and mushrooms are also excellent sources of zinc.
Like peanuts, avocados contain metabolism-enhancing monounsaturated fats that have been shown to reduce hunger. In fact, a study in Nutrition Journal found that participants who ate half a fresh avocado with lunch reported a 40 percent decreased desire to eat for hours afterwards. What’s more? The trendy toast topping is also loaded with unsaturated fats, which seem to prevent the storage of belly fat, as well as satiating fiber and free-radical-killing antioxidants.
When it comes to condiments, mustard is about as healthy and low cal as it gets, and the pungent yellow stuff that contains about 5 calories per teaspoon has also been found to stimulate weight loss. Scientists at England’s Oxford Polytechnic Institute found that eating just one teaspoon of mustard can boost the metabolism by up to 25 percent for several hours after it’s been consumed. Researchers attribute this to capsaicin and allyl isothiocyanates, phytochemicals that give the mustard its characteristic flavor. So instead of reaching for the sickeningly sweet ketchup, make sure you have mustard on hand at your next BBQ.
^ Sacks, Frank M.; Lichtenstein, Alice H.; Wu, Jason H.Y.; Appel, Lawrence J.; Creager, Mark A.; Kris-Etherton, Penny M.; Miller, Michael; Rimm, Eric B.; Rudel, Lawrence L.; Robinson, Jennifer G.; Stone, Neil J.; Van Horn, Linda V. (15 June 2017). "Dietary Fats and Cardiovascular Disease: A Presidential Advisory From the American Heart Association" (PDF). Circulation. 136 (3): e1–e23. doi:10.1161/CIR.0000000000000510. PMID 28620111.
A 2016 study found that garlic powder reduces body weight and fat mass among people with non-alcoholic fatty liver disease (NAFLD). Recent studies have also shown that garlic supports blood-sugar metabolism, and helps control lipid levels in the blood. What’s more? Eating garlic can help boost your immune system, help ward off heart disease, fight inflammation, increase memory retention, and lower blood pressure, so consider adding some to your next meal. At the very least, it is preferable over salt, which can lead to water weight gain and bloating.
For a 2,000-calorie daily diet, aim for 2½ cups of vegetables and 2 cups of fruit a day. If you consume more calories, aim for more produce; if you consume fewer calories, you can eat less. Include green, orange, red, blue/purple, and yellow vegetables and fruits. In addition to the fiber, the nutrients and phytochemicals in these foods may help protect against certain types of cancer and other diseases. Legumes, rich in fiber, can count as vegetables (though they have more calories than most vegetables). For more fiber, choose whole fruits over juice.