Not all the nutrients and other substances that contribute to good health have been identified, so eating a wide assortment of healthy whole foods like fruits and vegetables helps ensure that you get all of the health-promoting benefits that foods can offer. If your diet, day after day, consists of the same half dozen foods, it could fall short. In addition, varying your food choices will limit your exposure to any pesticides or toxic substances that might be present in particular foods.
While no one food is a magic bullet for weight loss, there are certain foods that can help you achieve your weight-loss goals. Most of the foods included as part of a weight-loss diet have a few things in common: they're high in fiber (which helps keep you feeling fuller longer) and have a low energy density—meaning that you can eat a decent-sized portion without overdoing it on calories. Include the following weight-loss foods as part of a healthy overall diet, and you may find it's easier to achieve your weight-loss goals.
The basic principles of good diets are so simple that I can summarize them in just ten words: eat less, move more, eat lots of fruits and vegetables. For additional clarification, a five-word modifier helps: go easy on junk foods. Follow these precepts and you will go a long way toward preventing the major diseases of our overfed society—coronary heart disease, certain cancers, diabetes, stroke, osteoporosis, and a host of others.... These precepts constitute the bottom line of what seem to be the far more complicated dietary recommendations of many health organizations and national and international governments—the forty-one “key recommendations” of the 2005 Dietary Guidelines, for example. ... Although you may feel as though advice about nutrition is constantly changing, the basic ideas behind my four precepts have not changed in half a century. And they leave plenty of room for enjoying the pleasures of food.:22
Since avocados are packed with nutrients and healthy fats that can stimulate weight loss, it’s no surprise that avocado oil acts in a similar fashion. When Penn State University researchers compared those who consumed monounsaturated-rich oils (like high-oleic canola oil or avocado oil) with those who consumed a flax-safflower oil blend, they found that those who used just three tablespoons of the monounsaturated-rich oil daily lost nearly two percent of their belly fat in just one month.
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.