How energy works

  There are more overweight people in this world than hungry people.  Individuals who are obese have a 10% - 50% increased risk of death from all causes, compared with healthy weight individuals.  97 million adults are in the “obese” category.  This is 31.4% of the entire adult population.  10 million kids (under 12) are in the “obese” category.  This is 17.5% of the population under age 12. Statistics

  This generation of children will be the first generation to actually have a shorter life expectancy than their parents because of obesity.  Obesity is now the LEADING cause of preventable death in the USA  1980: 24% of all Americans are found to be overweight.  2009: 66% of all Americans are found to be overweight. Statistics

  Our nation is in TROUBLE!!  We eat too much of the wrong foods & don’t burn off enough of those calories each day. The bottom line….

  Calorie- a unit of energy  Empty calorie- a calorie with little or no nutrients  Metabolism- the rate at which your body uses energy, or burns calories  Your body is like a furnace with food being the fuel you burn in it. How energy works

 The more calories in a food item the more energy it provides.

  Calorie intake- calories we consume and bring in to our bodies  Calorie expenditure- calories we use and burn throughout the day Intake vs. Expenditure

 1.Basal Metabolic Rate (metabolism): The number of calories you burn even if you slept all day. Some factors that affect this are: age, size, sex, and health. (60-70 % of calories burned) 2.Digesting, absorbing, transporting and storing the food you consume also takes calories. (10 % of calories burned) 3.Activity: Physical activity and exercise — such as playing tennis, walking to the store, chasing after the dog and any other movement — (account for the rest of the calories your body burns up each day). Three ways your body burns calories

  Main way body burns calories  It’s quite genetic!  Can you boost your metabolism? YES!!!  How?  Aerobic exercise  Strength training  Why exercise?  Muscle cells burn/use more energy than fat cells. Metabolism

 How to maintain body weight

 How do we gain weight, how do we lose weight?

 How to lose weight

  To maintain weight: calorie intake is the same as calorie expenditure  To lose weight: calorie intake is LESS than calorie expenditure (You are burning more calories than you are eating)  To gain weight: calorie intake is MORE than calorie expenditure (You are eating more calories than you are burning) Managing weight

 GenderAgeSedentaryModerately Active Active Female9-131,600cal1,600-2,000cal1,800-2,200cal Female14-181,800cal2,000cal2,400cal Male9-131,800cal1,800-2,200cal2,000-2,600cal Male14-182,200cal2,400-2,800cal2,800-3,200cal How many calories should I consume a day? Sedentary -light physical activity associated with daily life Moderately Active -equal to walking miles per day Active -equal to walking more than 3 miles per day

  One pound of fat = 3,500 calories.  If someone eats an excess of 500 calories a day for a week, how much weight will they gain that week?  What is a healthy amount of weight (in a week) to gain or lose?  Is it more important to diet or to learn how to live a healthy lifestyle? Managing Weight

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