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Related Concept Videos

Obesity01:24

Obesity

The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in adipocytes...
Weightlessness01:01

Weightlessness

When an object is dropped, it accelerates toward the center of the Earth. If the net external force on the object is its weight, it is said to be in free fall; that is, the only force acting on the object is gravity. Galileo was instrumental in showing that, in the absence of air resistance, all objects fall with the same acceleration g. However, when objects on the Earth fall downward, they are never truly in free fall, because there is always some upward resistance force from the air acting...
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Anorexia Nervosa

Anorexia nervosa is a complex and severe eating disorder characterized by an intense fear of weight gain, an unrelenting pursuit of thinness, and a distorted body image. It often leads to dangerously low body weight relative to an individual's age and height. This disorder is marked by significant physical and psychological consequences, making it one of the most life-threatening psychiatric illnesses.
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Self-Discrepancy Theory02:45

Self-Discrepancy Theory

One influential perspective on what motivates people's behavior is detailed in Tory Higgin's self-discrepancy theory (Higgins, 1987). He proposed that people hold disagreeing internal representations of themselves that lead to different emotional states.
Mass and Weight01:19

Mass and Weight

Mass and weight are often used interchangeably in everyday conversation. For example,  medical records often show our weight in kilograms, but never in the correct units of newtons. In physics, however, there is an important distinction. Weight is the pull of the Earth on an object. It depends on the distance from the center of the Earth. Weight dramatically varies if we leave the Earth's surface, unlike mass, which does not vary with location. On the Moon, for example, the acceleration due to...
Mass and Weight01:19

Mass and Weight

Mass and weight are often used interchangeably in everyday conversation. For example,  medical records often show our weight in kilograms, but never in the correct units of newtons. In physics, however, there is an important distinction. Weight is the pull of the Earth on an object. It depends on the distance from the center of the Earth. Weight dramatically varies if we leave the Earth's surface, unlike mass, which does not vary with location. On the Moon, for example, the acceleration due to...

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Related Experiment Video

Updated: Jul 8, 2026

Control of Eating Behavior Using a Novel Feedback System
04:48

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Published on: May 8, 2018

Community-living elder's views on normal and low weight.

C Thompson Martin1, J Kaiser Jones, N A Stotts

  • 1Department of Nursing, CSU Stanislaus, CA, USA. cmartin2@csustan.edu

The Journal of Nutrition, Health & Aging
|January 1, 2008
PubMed
Summary

Most older adults lack awareness of healthy weight ranges and low weight risks. Healthcare providers should educate seniors on maintaining optimal nutritional status and preventing unintentional weight loss.

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Area of Science:

  • Gerontology
  • Nutrition Science
  • Public Health

Background:

  • Understanding older adults' perceptions of normal and low weight is crucial for early detection of weight-related health issues.
  • This knowledge can significantly improve nutritional status and health outcomes in the aging population.

Purpose of the Study:

  • To assess community-dwelling older adults' comprehension of normal and low weight parameters relevant to their age group.
  • To identify the extent of information provided by healthcare providers regarding weight management for older adults.

Main Methods:

  • A cross-sectional exploratory study was conducted with 130 community-living older adults (aged 65+) in the Western US.
  • Participants had a body mass index (BMI) below 24 kg/m2.
  • Semi-structured interviews were analyzed using content analysis to understand participants' knowledge and experiences.

Main Results:

  • A significant majority (78%) of older adults did not know the normal weight range for their age.
  • Awareness of low weight definitions was even lower, with only 2% correctly identifying it.
  • Most participants (96%) reported receiving no guidance from healthcare providers on age-appropriate weight ranges or risks.

Conclusions:

  • The study highlights a critical knowledge gap among older adults regarding healthy weight, increasing their risk of malnutrition and low weight.
  • There is a clear need for healthcare providers to proactively educate older adults about normal and low weight to prevent adverse nutritional outcomes.
  • Interventions focusing on weight awareness and nutritional guidance are essential for this demographic.