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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...
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Long-term memory is a relatively permanent type of memory, capable of storing vast amounts of information over extended periods. Its storage capacity is generally considered unlimited.
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Obesity and episodic memory function.

Paul D Loprinzi1, Emily Frith2

  • 1Exercise Psychology Laboratory, Physical Activity Epidemiology Laboratory, Department of Health, Exercise Science and Recreation Management, The University of Mississippi, University, MS, 38677, USA. pdloprin@olemiss.edu.

The Journal of Physiological Sciences : JPS
|April 19, 2018
PubMed
Summary
This summary is machine-generated.

Obesity may negatively impact memory function, but lifestyle factors like diet and physical activity might influence this relationship. Further research is needed to clarify the exact mechanisms driving this association.

Keywords:
AdiposityBMICognitionDietExercisePhysical activity

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Area of Science:

  • Neuroscience
  • Public Health
  • Behavioral Science

Background:

  • Obesity is linked to lifestyle factors affecting episodic memory.
  • Animal studies suggest biological mechanisms connecting obesity and memory impairment.
  • No systematic reviews exist on obesity's effect on human episodic memory, considering lifestyle influences.

Purpose of the Study:

  • To systematically review research on obesity and episodic memory function in humans.
  • To examine if physical activity and dietary behaviors confound the obesity-memory link.

Main Methods:

  • Systematic literature review using PubMed, PsychInfo, and Sports Discus databases.
  • Included 14 studies: 8 cross-sectional, 4 prospective, 2 experimental.
  • Assessed consideration of diet and physical activity in reviewed studies.

Main Results:

  • Ten of 14 studies found an inverse association between weight status and memory function.
  • This association was attenuated by physical activity in one study.
  • Four studies found no direct effect, but some indicated indirect or moderated effects of BMI.

Conclusions:

  • Obesity may be associated with poorer episodic memory function.
  • Mechanisms remain uncertain: adiposity itself or related lifestyle factors (inactivity, diet) may be responsible.
  • More research is needed to disentangle the roles of obesity and lifestyle behaviors.