If you're eating fewer than 1,200 calories per day, your workouts will suffer and the constant stress on your body can lead to muscle loss and slow your metabolism, as we reported in 10 Things You Don't Know About Calories. If you're trying to eat super healthy, you might be surprised at how few calories you're actually eating—try tracking your daily intake with a food tracking app and make sure you're fueling your body, not depriving it of nutrients.
There are many approaches to weight loss and there is no set ideal method that works for all people, which is why so many different diets and exercise regimens exist. While some methods are more effective for each individual person, not all weight loss methods are equivalent, and studies suggest that some approaches are healthier than others. That being said, one of the most commonly effective weight loss methods is counting calories. In its most basic form, calories consumed minus calories expended will result in weight gain if the result is positive, or weight loss if the result is negative. However, this is far from a comprehensive picture, and many other factors play a role in affecting healthy, sustainable weight loss. For example, there exist conflicting studies addressing whether or not the type of calories or foods consumed, or how they are consumed, affects weight loss. Studies have shown that foods that require a person to chew more and are more difficult to digest result in the body burning more calories, sometimes referred to as the thermic effect of food. While the increase in burned calories may be marginal, foods that are more difficult to digest such as vegetables generally tend to be healthier and provide more nutrients for fewer calories than many processed foods.
Watching the scale will also help you calibrate your diet again. You won't be eating quite the same way when you're trying to maintain a stable body mass, since your focus isn't creating a calorie deficit but maintaining a healthy level of calories each day. Your nutritionist and personal trainer can help you with this. Even if you're going it alone, slight eating habit alterations will show up during your weekly weigh-in.
“There are many foods that aid weight loss, but one that I often recommend to my clients and eat myself is grapefruit. Researchers at Scripps Clinic in San Diego found that when obese people ate half a grapefruit before each meal, they dropped an average of 3.5 pounds over 12 weeks. Apparently, the tangy fruit can lower insulin, a fat-storage hormone, and that can lead to weight loss. Plus, since it’s at least 90% water, it can fill you up so you eat less. However, if you are on certain medications you should not have grapefruit or grapefruit juice, so check the label on all your prescriptions, or ask your pharmacist or doctor. — Patricia Bannan, MS, RDN, author of Eat Right When Time is Tight.
You can lower your LDL or “bad” cholesterol with healthier food and medications. But it’s harder to raise levels of the “good” kind of cholesterol, HDL. That’s the type that clears bad LDL from your blood, so the more you have, the better. Exercise and losing body fat can get you into the ideal HDL range: above 60 mg/dl, which lowers your odds of having heart disease.