Researchers from the University of Cambridge looked at 72 studies and found that people consistently consume more food and drink when they are offered larger-sized portions, packages, or tableware than when offered smaller-sized versions. The data suggested that if larger portions and tableware were eliminated throughout the diet, Americans could save about 527 calories per day—that adds up to more than 3,500 calories a week or one pound. Translation: this could be undermining your weight loss or actually causing you to gain weight. 
While you may be tempted to eat as few calories as possible to lose weight more quickly, as mentioned above, it’s important that you don’t cut more than 1,000 calories from your daily diet or eat fewer than 1,200 calories a day — even if that means your energy deficit is smaller than 1,000 calories. Eat too little and you’ll slow down your metabolism and put yourself on track to regain the weight — often with a few extra pounds.
Simply take a good hard look at your diet, make a few modifications you can stick with and get your body moving. Not sure where you stand on diet? Write down everything you eat this week, then compare it to the list above and see where you could have made better choices. Don’t beat yourself up though, learning how to lose stomach fat fast is a process. Simply find areas to improve and work on them next week.
Want to lose that belly fat? In your dreams! Seriously, though: a good night’s sleep is one of the best ways to get rid of that extra fat around your waist for good. Among the 60,000 women participating in the Nurses’ Health Study, those who snoozed for fewer than five hours a night were at the greatest risk of becoming obese and gaining 30 or more pounds over the course of the 16-year study period when compared to those who slept for seven or more hours.
When researchers in Brazil studied 13,000 people over a three-year period, they found that men with the highest levels of inflammatory agents in their body were also the most likely to gain weight. And periodontal disease, which is caused by poor oral health care, is one of the most common sources of inflammation. Brushing twice a day, flossing, and making regular trips to the dentist are the best ways to prevent the disease. Hate flossing? Studies show that a dose of Listerine may be just as effective at reducing levels of inflammatory bacteria within the mouth.
Your body needs a certain amount of essential vitamins and minerals to function properly. What happens when you don’t get enough of them? What happens when you eat too little food, or when the food you eat isn’t sufficiently nutritious? Perhaps our bodies catch on and reply by increasing hunger levels. After all – if we eat more, we increase the chances of consuming enough of whatever nutrient we are lacking.

Now you know that your dinnertime TV show and dishware affect how much you eat—but did you know that your environment has an even greater impact on your noshing habits? The typical American buys and eats more than 80 percent of their food within five miles of their homes—a.k.a. your food radius—according to Brian Wansink, Ph.D., director of Cornell University's Food and Brand Lab. In his book, Slim By Design: Mindless Eating Solutions, Wansink talks about various studies he's done over the course of his research career that show how your food environment dictates your eating habits.
A 2012 study in the Journal of Functional Foods found that people who drank one and a half cups of green tea enriched with a total of 609 milligrams of catechins (a group of antioxidants that have been shown to help burn fat cells) every day for 12 weeks lost almost 16 times as much visceral fat as those who consumed green tea without the added antioxidants. To achieve similar results with store-bought green tea, you’ll need to brew two to four cups daily (many varieties can contain 160 to 470 milligrams of catechins per cup).
Beyond the occasional fidget, you can do simple things like taking the stairs and walking more to increase your overall daily calorie burn—no gym required. "Move as much as possible," says Cederquist. "Wearing a Fitbit or another type of activity tracker is helpful for people to realize just how little many of us move." Cederquist recommends hitting 10,000 steps a day every day for general health and well-being—no excuses. 
Pace around your office while talking on the phone or run into the bank to cash your check instead of using the drive-thru. When researchers at the Mayo Clinic fed a group of volunteers an extra 1,000 calories a day over the course of eight weeks, they found sedentary individuals gained eight times more weight than those who fidgeted a lot during the day.
There’s a reason people are obsessed with apple cider vinegar for weight loss. Some research shows that it may have very modest weight loss benefits. For instance, in one 2009 study, researchers had 144 obese adults drink a placebo or 1 to 2 tablespoons of apple cider vinegar (ACV) daily for 3 months. They found that people who downed 2 tablespoons lost nearly 4 pounds, while those who sipped on 1 tablespoon dropped 2.5 pounds. The placebo drinkers? They actually experienced a small weight gain.
Not much of a coffee drinker? Tea is also a natural diuretic, and types of herbal tea such as dandelion or fennel root can also lend a hand. In fact: When a recent study compared the metabolic effect of green tea (in extract) with that of a placebo, researchers found that the green-tea drinkers burned about 70 additional calories in a 24-hour period.
If you get enough protein and fat, your total calorie intake should take care of itself. Because you feel full, you won't binge on a can of Pringles and blow your calorie count for the day. The remaining 45 percent of calories in our plan comes from carbohydrates — enough to give your palate a full range of tastes and your body a combination of fast- and slow-burning fuel.
Nuts. It’s very easy to eat until the nuts are gone, regardless of how full you are. A tip: According to science, salted nuts are harder to stop eating than unsalted nuts. Salted nuts tempt you to more overeating. Good to know. Another tip: Avoid bringing the entire bag to the couch, preferably choose a small bowl instead. I often eat all the nuts in front of me, whether I’m hungry or not.
"It’s easy to become impatient and frustrated when you’re trying to lose weight and haven’t seen the results yet. But be realistic – you won’t see the affect overnight. Your brain’s wiring plays a huge part in resisting changes in lifestyle, and it takes time to establish new habits – up to 12 weeks. Stick with it for at least eight weeks and you should notice a change."
We know, you've probably heard these a thousand times. But if you can make these small swaps day-to-day, you'll spare enough calories for the treat foods you really want or to go into a calorie deficit (a.k.a. the key to weight loss). (And this is just the tip of the iceberg. We have 50 more easy ways to cut calories.) Making these simple swaps is the way to health-ify your eating style and lose weight without actually dieting. 
It's a one-time investment you'll never regret. Here's why: Strength training builds lean muscle tissue, which burns more calories — at work or at rest — 24 hours a day, seven days a week. The more lean muscle you have, the faster you'll slim down. How do you start strength training? Try some push-ups or a few squats or lunges. Use your free weights to perform simple bicep curls or tricep pulls right in your home or office. Do these exercises three to four times per week, and you'll soon see a rapid improvement in your physique.
Limit your use of saturated fats. Saturated fats to avoid are found in meats and high-fat dairy products such as cheese, milk (and cream), and butter. Some plant-based oils, such as palm oil, palm kernel oil and coconut oil, also contain high levels of saturated fats. Polyunsaturated fats are a better alternative. Polyunsaturated fats are found in many nuts, seeds, avocados, and some fish.[2]
Conversely, the more food in front of you, the more you’ll eat—regardless of how hungry you are. So instead of using regular dinner plates that range these days from 10 to 14 inches (making them look empty if they’re not heaped with food), serve your main course on salad plates (about 7 to 9 inches wide). Instead of 16-ounce glasses and oversized coffee mugs, return to the old days of 8-ounce glasses and 6-ounce coffee cups.
"When we’re lacking in sleep, our body’s hormones get thrown off balance which can impact our hunger levels the next day. We all have two hormones that affect our appetite: ghrelin and leptin. When we don’t get enough sleep, our ghrelin levels (the hormone that makes us feel hungry) rise, and our leptin levels (the hormone that makes us feel full) drop. This means that when we’re awake, we tend to eat more but feel less satisfied. Try going to bed a little earlier than usual to avoid this imbalance and remember to remove any distractions that might prevent you from nodding off."
Stop treating your kitchen like an all-night diner and you’ll stop seeing those unwanted pounds piling onto your frame, too. The results of a study published in Cell Metabolism found that mice who only had access to food during an eight-hour period stayed slim over the course of the study, while those who ate the same number of calories over a 16-hour period gained significantly more weight, particularly around their middle. When you’re finished with dinner at night, shut the fridge and don’t look back until morning — your belly will thank you. When you do head back to the kitchen in the A.M., make sure the 40 Things Healthy Cooks Always Have in Their Kitchen are there waiting for you.
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