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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...
Energy Balance01:19

Energy Balance

The human body gets energy from the three macronutrients: carbohydrates, proteins, and fats. Energy is released when the chemical bonds in the organic compounds present in the food are broken down. The energy content of food is measured in kilocalories (kcal), defined as the amount of heat required to raise the temperature of one kilogram of water by one degree Celsius. This value is determined by measuring the temperature change of the water surrounding a calorimeter after the complete...
Longitudinal Studies01:26

Longitudinal Studies

Longitudinal studies are also widely used in other medical and social science fields. For instance, in cardiovascular research, they can monitor patients' health over decades to identify risk factors for heart disease, such as high cholesterol or smoking, and evaluate the long-term effectiveness of preventive measures. Similarly, in mental health studies, researchers might follow individuals from adolescence into adulthood to understand the development and progression of conditions like...
Drug Dosing: Obese Patients01:21

Drug Dosing: Obese Patients

In the United States, obesity is a prominent concern. It is linked to heightened mortality rates due to increased occurrences of conditions such as hypertension, atherosclerosis, coronary artery disease, and diabetes compared to nonobese individuals. A patient is classified as obese if their actual body weight surpasses the ideal or desirable body weight by 20%, based on Metropolitan Life Insurance Company data. Ideal body weights consider average weights and heights for males and females...
Changes in the Appendicular Skeleton with Age01:09

Changes in the Appendicular Skeleton with Age

The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Binge Eating Disorders01:23

Binge Eating Disorders

Binge eating disorder is a significant mental health condition characterized by recurrent episodes of excessive food consumption within a short period, accompanied by a perceived loss of control over eating behavior. Unlike occasional overeating, binge eating disorder is marked by distressing emotions such as guilt, shame, and anxiety following binge episodes. The disorder affects individuals across different ages and backgrounds, with profound implications for physical and psychological...

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Related Experiment Video

Updated: Jul 9, 2026

Breakfast Habits among Schoolchildren in the City of Uruguaiana, Brazil
06:48

Breakfast Habits among Schoolchildren in the City of Uruguaiana, Brazil

Published on: July 29, 2020

Weight Gains Across Adulthood-The ELSA-Brasil Study.

Scheine L Canhada1, Paula A Bracco1, Maria de Jesus Fonseca2

  • 1Postgraduate Program in Epidemiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.

Clinical Obesity
|July 7, 2026
PubMed
Summary

Adults gain significant weight and fat mass before age 35. Interventions targeting young adults could reduce the long-term burden of obesity.

Keywords:
adultsepidemiologyobesityweight gain

More Related Videos

Assessment of Child Anthropometry in a Large Epidemiologic Study
09:36

Assessment of Child Anthropometry in a Large Epidemiologic Study

Published on: February 2, 2017

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Last Updated: Jul 9, 2026

Breakfast Habits among Schoolchildren in the City of Uruguaiana, Brazil
06:48

Breakfast Habits among Schoolchildren in the City of Uruguaiana, Brazil

Published on: July 29, 2020

Assessment of Child Anthropometry in a Large Epidemiologic Study
09:36

Assessment of Child Anthropometry in a Large Epidemiologic Study

Published on: February 2, 2017

Area of Science:

  • Human health
  • Aging research
  • Obesity studies

Background:

  • Understanding age-related body composition changes is crucial for public health.
  • Obesity is a growing concern with significant long-term health implications.
  • Early life factors significantly influence adult weight trajectories.

Purpose of the Study:

  • To describe weight, fat mass, skeletal mass, and waist circumference changes across the adult lifespan.
  • To identify critical periods for weight gain and intervention.
  • To analyze body composition changes in a large Brazilian cohort.

Main Methods:

  • Analysis of 11,611 participants from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil).
  • Data collected between 2008 and 2024, including anthropometric measurements and bioimpedance.
  • Generalized estimating equations with restricted cubic splines used to model age-related changes.

Main Results:

  • Mean weight gain of 15 kg from age 20 to 60, with 50% occurring before age 35.
  • Peak annual weight gain observed between ages 40-45, followed by stabilization (ages 55-65) and then decrease.
  • Waist circumference increased steadily until age 75, independent of weight trajectory.

Conclusions:

  • A substantial portion of adult weight gain occurs in early adulthood (before age 35).
  • Targeting young adults with interventions could significantly impact obesity incidence and burden.
  • Waist circumference tracking suggests ongoing abdominal fat accumulation throughout adulthood.