6. Meeting Your Caloric Needs
Although you don’t have to think about
calories 24/7, it is really helpful to understand approximately how many
calories it takes for your body to function. This will, in turn, help
you to estimate how much you need to reduce your intake of foods in
order to lose weight. Once you establish your caloric needs, refer to
that fabulous food intake table on the MyPyramid Web site. This can help
you tremendously in establishing your personal plan of action. What are
you waiting for? Get calculating—it’s fun! Knowing what you are up
against is the first step and an important part of the battle.
Resting Metabolic Needs
To determine the number of calories you need to
lose weight, you first need to estimate the number of calories you need
to maintain your body weight—your body weight at its current level.
First you must establish how many calories it takes to maintain your
normal body functions at rest. This is referred to as your basal
metabolic rate (BMR). Once you determine this number, then you will be
able to add additional calories to compensate for daily activities and
needs for basic body functions. I’ll show you how. Start with this
equation:
To determine your BMR, multiply your current weight by ten (for women) or eleven (for men).
A 150-pound woman has a BMR of 1,500. This is
the approximate amount of energy (calories) that this individual needs
at rest. (Although BMR is primarily calculated from kilogram weight,
this formula will still provide you with an accurate estimate of your
needs without converting weight to kilograms.)
Activity Needs
Because your body does more than just rest, and
because you need energy (calories) to meet physical needs, you must
further determine your activity needs.
To determine your activity needs do the following.
- If you are mostly sedentary during the day (sitting, standing,
reading, writing, and not doing much physical activity), multiply your
BMR by 0.20.
- If you are lightly active during the day (doing housework, playing
with children, walking two miles or less during the course of the day),
multiply your BMR by 0.30.
- If you are somewhat active during the day (doing heavy housework or
gardening, playing tennis, working out at a club, dancing), multiply
your BMR by 0.40.
- If you are very active during the day (working in construction,
doing heavy labor, playing team sports regularly), multiply your BMR by
0.50.
So our lightly active, 150-pound woman, with a
BMR of 1,500, would multiply 1,500 by 0.30. Her adjustment for activity
needs would be 450. That means she needs 1,500 calories just to get by
without any physical activity, but she needs another 450 calories on top
of that to accommodate her activity. Her total BMR would be 1,500 plus
450, or 1,950 calories.
Basic Digestive/Absorption Needs
About 10 percent of your daily calories are
needed to meet basic digestive/absorption functions. Take your total BMR
(with activity factored in) times 0.10. So the woman from the last
section, with a total BMR of 1,950, would multiply 1,950 by 0.10, to get
195. Add that to 1,950, and you see she needs 2,145 calories to
maintain her current weight.
This formula is just a guideline for people to
determine their approximate BMR. There are many factors that contribute
to it as well. Besides gender differences, BMR is also affected by
heredity and body composition.
7. It’s Not Always Your Fault
Fast or slow metabolisms can be inherited.
(Wouldn’t we all love to have a fast metabolism?) This is why some
people stay thin throughout their life while eating whatever they
desire, while others feel like the pounds just pile on. Your body
composition is also a factor in determining your BMR. Some people’s
bodies have more muscle, others more bone, while yet others have more
fat. A person who is muscular and lean will have a higher metabolism
than someone built with a larger amount of fat. Muscle burns more energy
(calories) than fat does. So the more muscle you have, the more
calories you will burn. This is why it is so important to build those
muscles throughout life.
Differences Between Men and Women
Women are prone to burning fewer calories than
men. This is a fact. It’s because a woman’s body contains a higher
percentage of fat than a man’s body. It may not seem fair, but, again,
it is what it is. Men usually have 10 to 20 percent more muscle than
women do, and therefore burn calories at a higher rate. Women’s bodies
have increased fat stores to help them compensate for times of special
need during their lives, such as during pregnancy and lactation.
Losing One Pound at a Time
Let me show you how many calories are necessary
to begin to lose weight in a healthy manner. 3,500 calories equal one pound. To lose one pound, you need to
decrease your caloric intake by 3,500 calories. You can see from the
above example that it is not possible to put your body in a deficit of
3,500 calories within the course of a day or two. Decreasing your
calories sufficiently by 500 calories per day you can lose one pound per
week (500 calories multiplied by seven days equals 3,500 calories). The
idea is to create a negative energy balance—consume fewer calories than
you use up without sacrificing your other nutrient needs. This will
allow for a weight loss of about one pound per week. If you want to lose
fast this may seem too low for you. But this approach will help you to
lose body fat (not muscle or water weight), incorporate a healthier food
intake, and achieve permanent results. As you begin to lose weight, you
can also increase your activity levels to burn even more calories. This
will help burn more calories and guess what? You lose the weight
faster.
8. Starting Over at Any Age
I don’t want to hear the age-old excuse—age—when
it comes to your weight loss. Sure, you may have to adjust to normal
changes in the body but you can do it. One obstacle when it comes to
getting older is the decline of metabolic rate. There is an energy
reduction of 3 to 5 percent that occurs each decade (after twenty-five
to thirty years of age). This happens because of changes such as body
composition and hormones. Bodies become less active. Muscle tissue
declines. Body fat increases. With less overall muscle mass, fewer
calories are burned for normal energy needs.
This does not have to be depressing. There are
countless studies and examples of people living today who are in better
shape now than when they were younger. Exercise and physical activity
can help increase your muscle tissue to accelerate your metabolism and
calorie needs. By working out your major muscle groups twice each week
you can help replace a decade’s loss of muscle mass in several months.
Wow! So lift those weights and build your strength to help reduce the
aging process. It can make you feel younger and stronger and can improve
your sex life, too.
Reasons for Weight Gain
People over twenty-five and up to sixty-five
years of age often experience weight gain due in part to aging. However,
even young people beginning a professional career just after high
school or college often become more sedentary. Weight gain can creep up
here and there until a few pounds turn into an overweight or obese
condition.
As lifestyles become more affluent, so do higher
standards of living, which can mean doing fewer chores. If you hire
people to clean your house, cut your grass, or wash your cars, you may
save yourself from doing the work but you burn fewer calories. People
also eat out more often, enjoy social eating events, and spend more
money on food overall. Each one of these can contribute to weight gain
over the years.
Do People Have a Predetermined Weight?
You may notice that some people can maintain
their weight without a great deal of effort while others fight to lose
beyond a certain point. Many nutrition scientists believe in a theory
often referred to as the set point theory.
A set point is a weight range that your body
aims to maintain. It is based on your genetic and chemical makeup. Your
body works hard to stay within a minimal range surrounding this set
point. The body’s metabolism decreases when weight drops lower than its
set point so weight loss is slow; on the contrary, it increases when
weight rises above the set point. The body works hard to keep this
balance. Set points are often noticed when comparing two people of the
size height and same frame size. Even if these two people ate the same
foods, they would not necessarily gain weight the same way or lose
weight the same way. The weight they carry is dependent on their genetic
makeup and ultimately on their set point. The set point theory can
explain many mysteries surrounding weight reduction and dieting.
Energy-Ease
The energy needs of
individuals are different. Yours are unique, too, based on various
factors. Determining your particular needs can help you estimate a
guideline within which to work. Body size, metabolism, age, gender,
activity levels, and genetics all are factors in establishing one’s
exact energy needs. Rather than focusing on a specific number, instead
try to understand where your energy is coming from and how you can aim
to properly meet individual food energy requirements. This can be much
more effective in losing and maintaining your overall weight.