Many people
live in nations where the majority of people are overweight or obese. In the
US, for example, only one-quarter of the adult population has an ideal weigh.
In those ages 17 and under, 50% are at a normal weight. Less
than 20% of those who lose weight keep that weight off, while the rest follow a
circular pattern of weight loss, maintenance, followed by weight gain.
Carrying excess
weight can lead to serious health problems such as heart disease, hypertension and type 2 diabetes. Dieting for weight loss is
not a permanent solution. In order to lose weight safely and sustain that
weight loss over time, permanent and healthy lifestyle changes must occur.
Fast facts on weight loss
Here are some key points about weight loss. More detail and
supporting information is in the main article.
- Overweight and obesity result from a complex interaction between genes and the environment.
- Overweight is defined as a BMI of 25.0 to 29.9 kg/m2 and obesity as a BMI of 30 kg/m2 or above.
- Overweight and obesity increase health risks from hypertension, dyslipidemia, type 2 diabetes, heart disease, stroke, osteoarthritis and obstructive sleep apnea.
- The three major components of weight loss therapy are dietary therapy, increased physical activity and behavior therapy.
- Weight loss is primarily dependent on reducing total caloric intake, not the proportions of carbohydrate, fat and protein in the diet.
- Around 80% of persons who lose weight will gradually regain it. Individuals who continue weight maintenance programs have a greater chance of keeping weight off.
- To lose one pound a week, it is necessary to establish an energy deficit of 500 calories a day.
- Most weight loss occurs because of decreased caloric intake. Regular physical activity is most helpful in the prevention of weight regain.
- Low levels of physical activity are related to weight gain in both men and women.
- Record keeping has been shown to be one of the most successful behavioral techniques for weight loss and maintenance.
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Losing weight
Successful weight loss does not require following a specific
diet such as Weight Watchers or low glycemic, but rather eating less while
moving more to achieve a negative energy balance. Weight loss is primarily
dependent on reducing total caloric intake, not the proportions of
carbohydrate, fat and protein in the diet.
The amount of calories
burned needs to be higher than calories consumed. When considering how to eat
to maintain overall good health, diets should be rich in vegetables, fruit,
whole grains, seafood, legumes, and nuts, and contain moderate amounts of dairy
products as tolerated. Additionally, red and processed meat, sugar and refined
grains should be limited, or avoided altogether.
A reasonable goal
for weight loss is to strive for a 5-10% reduction in body weight over a 6-month time frame.
Most people can achieve this goal by reducing their total caloric intake to
somewhere between 1,000-1,600 calories per day. Diets of less than 1,000 calories
per day are not recommended.
After 6 months of
dieting, the rate of weight loss usually declines and weight plateaus because
less energy is expended at the lower weight. A weight maintenance program of
healthy eating habits and physical activity needs to be followed, or the lost
weight will be regained.
For people who
have a BMI greater than or equal to 30 with no obesity-related health problems,
or for those with a BMI greater than or equal to 27 with obesity-related
diseases, prescription weight-loss medications might be considered. Medications
should only be used in addition to the above healthy lifestyle changes. If
attempts to lose weight have failed and the BMI is greater than or equal to 40,
surgical therapy is an option that can be considered.
10 tips for successful weight loss
There are many
steps that can be taken to improve your chances of losing weight and
subsequently keeping it off. Below is a list of 10 tips that are likely to
help.
1. Eat varied, colorful, nutritionally dense foods
The foundation of
your diet should be healthy meals and snacks. A suggestion is to make each meal
50% fruit and vegetables, 25% whole grains, and 25% protein. Total fiber should
be 20-30 g daily. Eliminate trans fats, and saturated fats should be kept as
low as possible as their ingestion is strongly linked to the incidence of coronary heart disease.
When fats are consumed, they should be monounsaturated (MUFA) or
polyunsaturated (PUFA).
Foods to include: fresh fruits
and vegetables, fish, legumes, nuts, seeds, and whole grains such as brown rice
and oatmeal.
Foods to avoid: added oils
and butter, non-lean red or processed meats, baked goods, bagels, white breads.
It is not uncommon
to become deficient in necessary nutrients, vitamins and minerals
while losing weight. Consult with a nutritionist or other knowledgeable
clinician about how to prevent this during your weight loss program.
2. Keep a food and
weight diary
Self-monitoring is
one of the key elements in a successful weight loss program. Whether it be a
paper diary, a mobile app or an Internet program, recording everything eaten
over the course of the day is necessary. Weight should be measured and recorded
weekly so as to follow progress.
3. Engage in regular physical activity and exercise
Physical activity
is important for overall good health, and increasing it is another integral
ingredient of a successful weight loss program.
A total accumulation (activity can be portioned throughout the
day) of one hour a day of moderate-intensity activity such as brisk walking is
ideal. If one hour is not possible, 150-250 minutes per week is beneficial. For
people who are not normally physically active, exercise should be initiated
slowly and the intensity should be increased gradually.
Additionally, keep
track of physical activity. There are many free mobile apps available to record
food and activity that credit your calorie balance after you log your exercise.
Activities like taking the stairs, raking leaves, dog walking, gardening, dancing,
playing outdoor games and parking farther away from a building entrance are all
good ways to increase your physical activity.
Medical evaluation
prior to initiating an exercise program is typically not necessary for
individuals at low risk for coronary heart disease. However, there are cases
where medical evaluation is warranted. Consult your health care provider if you
are unsure how much exercise is safe for you.
4. Eliminate liquid calories
It is easy to
consume hundreds of calories a day from sugar-sweetened sodas, teas, juices or
alcohol. This is a waste of your calories. Unless you are having a meal
supplement healthy smoothie, drink water or unsweetened tea or coffee. Add a splash of
fresh lemon or orange if you need taste. Don't mistake dehydration for
hunger; if you think you are hungry and it is not a scheduled meal or snack
time, have a drink of water.
5. Measure servings and control portions
Too much of any
food, even low-calorie vegetables, will result in weight gain. Never make a
habit of estimating a serving size or eating food right out of the bag. Use
measuring cups, measurement guides or count out the appropriate amount for a
serving. Guessing leads to overestimating and the potential to eat much more
than what the serving really is.
If you are eating
out, you can still have a good idea of how much you can eat by using these size
comparisons:
¼ cup is a golf ball
½ cup is a tennis ball
1 cup is a baseball
1 ounce of nuts is a loose handful
1 teaspoon is 1 playing die
1 tablespoon is a thumb tip
3 ounces of meat is a deck of cards
1 slice is a DVD.
6. Eat mindfully
Being aware of
why, how, when, where and what you eat is mindful eating. When you become in
tune with your mind and body, you will make better choices regarding your food.
Slow down and
savor when you eat and concentrate on the taste of the food. Making a meal last
20 minutes allows the body to register physiological signals for fullness.
And when you eat,
focus on being satisfied after a meal, not full. Consider what you are eating;
is it a good "value" for the calorie cost? Will it provide satiety?
If it has a label, what are the ingredients, fat content or sodium amount? You
may not be aware that many food items labeled all natural or low fat are still
not a healthy choice. Make a commitment to mindful eating.
7. Stimulus and cue control
Many social and
environmental cues seem to encourage undesired eating. For example, some people
are more likely to overeat while watching television.
Others have
trouble passing by a bowl of candy without taking a piece.
Be aware of what
might trigger in you a desire to eat unwanted calories, and think of ways you
can change your routine to keep these instances under control.
8. Plan ahead
Having a kitchen
stocked with weight loss-friendly foods and keeping meals structured will
result in greater weight loss. Clear the shelves of processed or junk foods,
and have healthy and easy meal choices available to prevent potential quick and
careless eating. Think ahead of ways you can manage your food intake at social
events, or restaurants.
Source: Medical News Today
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