Somebody asked me recently, "Which is better for weight loss — cutting calories or increasing exercise?" My answer was that you need both, but I wasn't sure of the exact ratio....50/50? 60/40? I did a little research.
Read the expert answers below from some of the articles I found.
"Answer (Mayo Clinic) from Donald Hensrud, M.D.
Cutting calories through dietary changes seems to promote weight loss more effectively than does exercise and physical activity. But physical activity also is important in weight control.
The key to weight loss is burning more calories than you consume. Because 3,500 calories equals about 1 pound (0.45 kilogram) of fat, you need to burn 3,500 calories more than you take in to lose 1 pound. So if you cut 500 calories from your diet each day, you'd lose about 1 pound a week (500 calories x 7 days = 3,500 calories).
For most people, it's probably too difficult to eliminate the amount of calories through exercise that you could through dieting. That's why cutting calories through dieting is generally more effective for weight loss. But doing both — cutting calories and exercising — can help give you the weight-loss edge. Exercise can help burn off even more calories than just dieting.
Exercise also is important because it can help you maintain your weight loss. Studies show that people who lose weight and keep it off over the long term get regular physical activity. If you lose weight by crash dieting or by drastically restricting yourself to 400 to 800 calories a day, you're more likely to regain weight quickly, often within six months after you stop dieting. Getting regular exercise also can help prevent excess weight gain in the first place."
"ACE Fitness FIT Facts
Weight Loss: Diet vs. Exercise
The two major players in the weight-loss battle are diet and exercise. But can the battle be won using only one of these tools? Many people opt for the easier route, which they believe is dieting. But when you consider how poor the statistics are for long-term weight loss through diets, you need to consider a combination of both. Normally, only about 5% of dieters are successful in keeping weight off, and weight cycling is very common. Usually one-third of weight lost is regained within one year and almost all is regained within three to five years.
HOW WEIGHT LOSS WORKS
The mechanism of weight loss is simple. It is encompassed in a concept called energy balance. When you burn more calories than you consume, you lose weight. Therefore, to lose weight you need to burn more calories and/or consume fewer calories. The combination of both of these methods is the best way to lose weight and improve your health.
HOW THE PROS DO IT
Members of the National Weight Control Registry are people who have lost weight and kept it off successfully for a minimum of one year. Of these people, 89% use a combination of diet and exercise, although 10% have had success using diet alone and 1% used exercise alone. However, research shows that the combination of exercise and diet is more effective than diet alone. Furthermore, while diet alone helps you lose weight, it is exercise that improves your physical fitness.
GETTING STARTED
Combining diet and exercise can be tricky when you’re trying to cut calories. It is important to make sure that you eat enough so that you have energy to get through your workout, but not so much that you tilt your energy balance back to the weight-gain side. While guidelines suggest 1 to 2 pounds of weight loss a week, you should set a goal that is both realistic and manageable for your lifestyle and fitness level. Overly aggressive goals often lead to attrition and failure.
Your diet should consist of low-fat food choices and a modest reduction in the total number of calories. Without overwhelming yourself with odd foods and food labels, try simply reduce your food portions by about 10 to 15%. Try to be consistent across the week, instead of dieting more strictly on certain days of the week.
With exercise and activity, people who successfully maintained weight loss exercised an average of an hour or more per day. Longer-duration exercise is usually needed to lose weight and prevent weight re-gain. However, this may be too much for you to begin with, so start small and gradually progress the duration of your activity by 10% each week. For example, increase the duration of your walks from 20 minutes during week one to 22 minutes the following week.
STAYING MOTIVATED
Changing your diet and exercise habits involves lifestyle modifications, but maintaining these lifestyle changes can be the real challenge. Many people can lose weight, but only a few can maintain that weight loss. Much of this is due to the fact that the lifestyle modifications made to lose weight need to be permanent. It is normal to regain a few pounds after your initial weight loss. The key is to not get discouraged and stay motivated. The smaller the amount of weight that you regain, the easier it is to lose again, permanently. So frequent monitoring of your weight is necessary to catch yourself when you start to regain weight. Keep in mind that the longer you keep weight off, the easier it becomes. For weight loss to be sustainable, it must be a slow process of 1 to 2 pounds of weight loss per week. Stay focused and goal-oriented and know that successful weight loss is possible!"
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So, what did we learn here? You can't keep your awesome fit body if you exercise relentlessly but continue to eat like crap every day. Likewise, you can't HAVE a truly awesome body if you eat perfectly and don't exercise at all. You could have an average sized body, but with not much shape. You would have a smaller version of the bigger body you had before. Strength training a few times per week is essential in your "increasing exercise" arsenal because if you lose weight by changing your diet alone, you WILL lose muscle mass. Why is that bad? You will end up burning less calories (because muscle burns more calories) and your metabolism will conk out. Muscle on your body is what helps your metabolism crank up and stay up.
So, incorporate BOTH good, clean eating AND strength/cardio routines that you enjoy. Sprinkle in some planned cheats here and there and make sure you have some days of recovery.
(PS- I dislike the word "diet." It screams failure to me. It sounds like something short term. Watch for an upcoming post on that.)
