You Gotta Eat to Lose

I know, I know. You hear it, but you just can’t seem to wrap your mind around the fact that in order to lose inches/weight and improve your body composition, you have to eat. Really??!! Let me explain this as simply as possible.

Most people think deprivation. If I cut calories, usually something like 500 calories a day = 3500 calories in a week, which will allow you to lose 1 pound. While that may be true, it may be short term depending a variety of factors. Factors such as physical activity, the types of foods one eats as part of their regular diet and body fat percentage. These factors vary for each person.

Some people may look at a magazine and determine for themselves that they should be eating between 1600-1800 calories to lose weight. Just check to make sure there is a disclaimer (in fine print) that says this advice should vary by individual. What happens is a 150-pound woman and a 180-pound woman will pick up the same magazine, see the main highlights and miss the fine print (if there is fine print). So do you think a 150-pound woman and 180-pound woman should be consuming the same amount of calories?? The answer is No.

The reason is that food intake has to be customized to be effective. When one is starting to make changes to their meal choices, eliminating processed foods and snacks high in sugar and saturated fats is a great way to start. There should always be a plan and roadmap for substitutions or better options.

Based on various factors, each person has a specific amount of calories they should be consuming to lose inches/weight and keep it off. It starts with knowing how many calories your body needs at the base level of functioning life. This would be the case if you were to sit on the couch each day, not move and need enough energy, (calories) for you to breathe and for your brain, heart and all other major organs to function. This is your Basal Metabolic Rate (BMR). For women, multiply your weight by 11 and men multiply their weight by 12 to get this BMR. The 150-pound woman needs a base level of 1650 calories and the 180-pound woman needs 1980. Remember the magazine article that states you should eat 1600-1800 calories per day?

Let’s move on. There are 3 more custom factors that will affect the total recommended calories needed in a day. They are physical activity, the thermal effect of food and body fat percentage. For example, if the 150-pound woman is active vs. sedentary, eats more nutrient dense carbohydrate foods than high fat foods and has a low body fat percentage, her daily recommendation can be up around 2600 calories. Yes, 2600 calories. If you are very active, you need food to burn to keep your metabolism up. Your metabolism is the chemical process in the body that destroys tissue and releases energy, thereby generating heat. The faster your metabolism, the more calories you burn. Carbohydrates provide less calories per gram of food than fat, therefore, one would need more calories if their daily intake was more carbs than fat. Finally, if someone has a low body fat percentage, their body has more lean muscle and (again) needs more calories to burn to keep the metabolism going.

Can you see how the 150-pound woman can need 2600 calories instead of 1600? 1600 calories would put her in a starvation mode. In starvation mode, the body will look for another form of fuel or energy and start to break down precious muscle tissue to create the fuel it needs. You do NOT want that to happen. I blogged about this issue and the importance of having lean muscle tissue in Dieting Truths, an entry dated July 1, 2008. Please refer back.

When you don’t eat enough calories in your day, that is one reason the body will not change composition and the other is not eating the right type of calories. Carbohydrates are your main source of energy and the more whole grain and nutrient dense the better. So think of sweet potatoes, brown rice, fruits and vegetables. Good fats (olive oil, avocado, and fat from salmon or tuna) are your second source of energy and protein is very last. Protein is last because it takes a lot for your body to process it for energy. In sum, stick with healthy carbohydrates, good fats and lean protein and eat them to lose. In an upcoming post, I will discuss how much of each nutrient you actually need.