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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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Osmolality refers to the number of solute particles per kilogram of solvent in a solution. Plasma osmolality specifically indicates the total number of solute particles per kilogram of water in blood plasma. This value reflects the body's hydration status and is tightly regulated through mechanisms controlling water intake and output. While water consumption is a conscious decision, the body has intrinsic regulatory systems to maintain fluid balance. Dehydration, a state of water deficit...
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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...
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Coffee Intake and Obesity: A Meta-Analysis.

Ariel Lee1, Woobin Lim2, Seoyeon Kim3

  • 1Dartmouth College, Hanover, NH 03755, USA. ariel.lee.21@dartmouth.edu.

Nutrients
|June 15, 2019
PubMed
Summary

Higher coffee consumption may be linked to slightly lower body fat, especially in men. This meta-analysis reviewed 12 studies on coffee intake and obesity measures like body mass index and waist circumference.

Keywords:
adipositybody mass indexcoffee intakemeta-analysisobesitywaist circumference

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Area of Science:

  • Nutrition Science
  • Epidemiology
  • Public Health

Background:

  • Coffee is a widely consumed beverage with a debated association with obesity.
  • Previous studies show inconsistent results regarding coffee intake and obesity.
  • A systematic summary of existing evidence is needed.

Purpose of the Study:

  • To systematically evaluate the relationship between coffee consumption and obesity indicators.
  • To synthesize findings from multiple epidemiological studies using meta-analysis.

Main Methods:

  • A meta-analysis was conducted on 12 epidemiological studies identified from PubMed and Embase.
  • Obesity was assessed using body mass index (BMI) and waist circumference (WC).
  • Data were analyzed using random effects models to calculate weighted mean differences and relative risks.

Main Results:

  • Higher coffee intake showed a modest inverse association with BMI (WMD -0.08) and WC (WMD -0.27).
  • The association was more pronounced in men, with significant inverse associations for both BMI and WC.
  • For binary outcomes, the relative risk for highest vs. lowest coffee intake categories was 1.49 for BMI and 1.07 for WC, indicating a potential but not statistically significant increase.

Conclusions:

  • Higher coffee intake may be associated with reduced adiposity, particularly central adiposity (WC).
  • This association appears stronger in men.
  • Further research may clarify the mechanisms behind coffee's potential role in weight management.