Empty calories

Granulated sugar provides energy in the form of calories, but has no other nutritional value.

In human nutrition, the term empty calories refer to calories found in both beverages (including alcoholic)[1] and foods composed primarily or solely of sugars and/or certain fats and oils that provide little to no nutrition such as protein, fibre, vitamins, minerals, or essential fatty acids.[2] Foods composed mostly of empty calories have low nutrient density, meaning few nutrients relative to their energy content.[3] The consumption of large amounts of empty calories can have negative health consequences.[4]

Research

The lack of adequate nutrition found in high energy foods was first scientifically tested by French physiologist François Magendie, who experimented on dogs and described the process in his book Précis élémentaire de Physiologie. He demonstrated that the eating of sugar, olive oil, or butter could be the cause of the death of his test animals within 30 to 40 days.[5]

Examples

The following foods are often considered[6][7][8][9] to contain mostly empty calories and may lead to body weight gain.

  • Sugar: such as cakes, cookies, sweets, candy, soft drinks, fruit-flavored sweet beverages, and other foods containing mostly added sugars, including high-fructose corn syrup.
  • Fat: such as margarine, shortening, other fats, and oils.
  • Alcohol: such as beer, wine, spirits, and other alcoholic beverages. While moderate amounts can lead to body weight gain, chronic consumption of large amounts of alcohol can lead to body weight loss because alcoholic liver disease (ALD) is characterized by an increased metabolic rate and impaired muscle protein synthesis, resulting in sarcopenia.[10]

Impact on other nutrients

A diet high in added sugar typically leads to reduced consumption of foods that contain essential nutrients. One study reported that when there was increased consumption of added sugars, nutrients at most risk for deficiency were magnesium and vitamins A, C, E. Intake of these nutrients dropped with each 5% increase in added sugar intake.[11]

A diet high in alcohol can have the same effect, although in this case the nutrients at particular risk of deficiency are zinc, vitamin D, thiamine, folate, cyanocobalamin, and selenium. People with ALD also suffer from sarcopenia, but it is not clear if this is due to chronic low protein intake or the disease, which is known to inhibit muscle protein synthesis.[10]

Threshold for health impact

Food intake must be balanced with physical activity to maintain healthy body weight. Sedentary individuals and those eating less to lose weight may suffer malnutrition if they eat food primarily composed of empty calories.[12][13] In contrast, people who engage in heavier physical activity need more food energy as fuel and can have a larger amount of calorie-rich, essential nutrient-poor foods. Dietitians and other healthcare professionals can prevent malnutrition by designing eating programs and recommending dietary modifications according to each patient's needs.[14][15]

The USDA advises the following levels of empty calorie consumption as an upper limit for individuals who engage in 30 minutes or less of moderate exercise daily.[16]

GenderAge (years)Total daily calorie needsDaily limit for empty calories
Male2–31000135
4–81200–1400120
9–131800160
14–182200265
19–302400330
31–502200265
51+2000260
Female2–31000135
4–81200–1400120
9–131600120
14–181800160
19–302000260
31–501800160
51+1600120

See also

  • Junk food
  • Whole food

References

  1. ↑ Veronique Chachay (April 29, 2015). "Think before you drink: alcohol's calories end up on your waistline". The Conversation. Retrieved November 10, 2021.
  2. ↑ "Understanding empty calories". Harvard Health Publishing. June 16, 2016. Retrieved November 10, 2021.
  3. ↑ Marion Nestle and Malden Nesheim (2013) Why Calories Count: From Science to Politics, page 3, ISBN 0520952170
  4. ↑ "What are empty calories?". USDA MyPlate 2011. Archived from the original on 2014-01-30. Retrieved 2017-10-20.
  5. ↑ Magendie, F. (1816) "Sur les propriétés nutritives des substances qui ne contiennent pas d’ azote", Annales de Chimie (ser. 2) 3:66-77, 408–410.
  6. ↑ "What are Empty Calories?". Choosemyplate.gov. Retrieved 2013-05-21.
  7. ↑ "Beware-Empty-Calories". Webmd.com. Retrieved 2013-05-21.
  8. ↑ "Definition Of Empty Calories". Livestrong.Com. Retrieved 2013-05-21.
  9. ↑ "Which foods have empty calories?". Caloriecount.about.com. 2008-04-10. Retrieved 2013-05-21.
  10. 1 2 Dasarathy S (2016). "Nutrition and Alcoholic Liver Disease: Effects of Alcoholism on Nutrition, Effects of Nutrition on Alcoholic Liver Disease, and Nutritional Therapies for Alcoholic Liver Disease". Clin Liver Dis. 20 (3): 535–50. doi:10.1016/j.cld.2016.02.010. PMC 4934388. PMID 27373615.
  11. ↑ Marriott BP, Olsho L, Hadden L, Connor P (2010). "Intake of added sugars and selected nutrients in the United States, National Health and Nutrition Examination Survey (NHANES) 2003-2006". Crit Rev Food Sci Nutr. 50 (3): 228–58. doi:10.1080/10408391003626223. PMID 20301013.
  12. ↑ "Healthy Weight: Caloric Balance | DNPAO | CDC". Cdc.gov. 2011-10-31. Retrieved 2013-05-21.
  13. ↑ "A Healthier You - Chapter 6. Calories + Nutrients = Food". Health.gov. Retrieved 2013-05-21.
  14. ↑ "Dietitians and Nutritionists : Outlook Handbook : U.S. Bureau of Labor Statistics". Bls.gov. 2012-07-18. Retrieved 2013-05-21.
  15. ↑ "Vitamin and Nutrient Information from the Academy". Eatright.org. Archived from the original on 2013-05-08. Retrieved 2013-05-21.
  16. ↑ "Empty Calories: How Many Empty Calories Can I Have?". USDA MyPlate 2011. Archived from the original on 2014-02-01. Retrieved 2014-01-22.
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