How to Lose Weight

How quickly should you lose?

Now that you know how many calories you need to maintain your weight, and how many you are currently eating each day, you can decide how much of an energy deficit you will need to set up to lose weight steadily and safely. Cutting back on food drastically– such as by sticking to a rigid 1,000 calories a day diet when your BMR is 3,000 calories – would undoubtedly lead to rapid weight loss. But it is very unlikely that you would be able to sustain it in the long term, leading to a dispiriting ‘failure’ and, probably, an equally rapid weight gain once you started eating normally again.

Gradual weight loss is best

Health professionals recommend that a safe and steady weight loss is about 1–2 lb (0.45–0.9 kg) a week. Slimming at this rate ensures that you will be losing fat rather than lean tissue, such as muscle, and it should be fairly easy to achieve without drastic calorie-cutting measures, so that you can stick with your plan without it feeling like a ‘diet’. And, as a bonus, research shows that people who lose weight slowly are more likely to keep it off in the long run.

As it takes an energy deficit of around 3,500 calories to lose 1lb of fat, a daily saving of about 500 calories should be enough to lose 1 lb a week (7 x 500). Saving 1,000 calories a day (say, from 3,000 to 2,000) could result in a 2lb weekly loss, but this depends on current intake: women should not try to lose weight on less than around 1,500 calories a day, while for men the minimum is around 1,900 calories a day.

In the first few weeks of a weight loss plan it is possible to lose more than 1lb or 2lb a week. This is because glycogen (the short-term store of surplus energy) is stored in three times its weight of water, which accounts for a lot of the initial weight loss. This can be a very motivating start to a weight-loss campaign and it may continue for longer than a week or two, especially if you have a lot of weight to lose.

must know

Working out calorie needs

For a rough guide to your daily calorie needs, multiply your weight in pounds by 15 if you are moderately active: or 13 if you have a sedentary lifestyle. Using Jane as an example, this method would estimate her total calorie needs at 2,173 compared to 2,130 for the four-step calculation.

There is no need for any drastic calorie cutting – or boring meals – when losing weight; healthy food can be filling and delicious.

must know

Calories from alcohol

These are not stored in the body but are used immediately as energy. That sounds like good news but it’s not; this is because instead the body stores calories from other sources such as fat, which tend to accumulate in fat deposits in the abdomen, and may account for the observation that many heavy drinkers are ‘apple-shaped’.

Weight loss, balance and health

This chapter has looked at ‘calories in and calories out’, a concept which is essential to understand in order to create an energy deficit. However, it is not enough on its own to help the slimmer because it does not address the other key question: what you should eat in order to ensure that a weight loss plan is also healthy, balanced and enjoyable for you to follow.

After all, if your only aim was to lose weight by creating an energy deficit, then the diet could consist of anything at all, as long as it saved calories. However, when you are devising an effective and personalized slimming plan, it is vital to ensure that your daily diet is healthy and balanced; that hunger is kept at bay; and that enough favourite foods are included so that the plan feels comfortable and enjoyable and you don’t feel that you are missing out on meals. All of these aspects are covered in the next section.

Adding lemon to a gin and tonic doesn’t make it healthy! Alcoholic drinks provide ‘empty calories’ with little nutritional value.

Energy deficit

By calculating your BMR and your calorie intake you will build up a picture of whether your current energy balance is likely to help you maintain your weight or whether you are consistently taking in too many calories for your needs.

Adjusting both your food intake and your activity level will help to shift the balance so that you begin to lose weight; it will be important to keep a food diary for the first few weeks of your weight loss plan so that you can keep track of all the meals, snacks and drinks that you consume.

Once you have started this process, have done all the calculations and are sure that you are in energy deficit but you are not losing weight, then the most likely explanation is that somewhere something has been missed; it may be that daily activity has been over-estimated, or calorie intake has been under-estimated. Another week’s food diary and another calculation of the ‘activity factor’ could reveal what has been happening.

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