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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...
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...
Pharmacokinetics in Obese Patients: Drug Absorption and Distribution01:25

Pharmacokinetics in Obese Patients: Drug Absorption and Distribution

Obesity significantly alters the pharmacokinetic processes of drug absorption and distribution, presenting unique challenges in medical treatment. The increased fat tissue and decreased lean muscle in obese individuals can significantly affect how drugs are absorbed into the body and distributed across different tissues. This alteration can lead to variances in the effectiveness and safety of medications, necessitating adjustments in dosing or drug selection for obese patients.One notable...
Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion01:20

Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion

Drug metabolism, a critical process in the liver, involves two primary phases: Phase I reactions and Phase II conjugation. Obesity introduces significant alterations in this metabolic process, primarily due to fatty infiltration of the liver, leading to conditions such as nonalcoholic fatty liver disease (NAFLD). This condition can modify the activities of both Phase I and II enzymes, impacting how drugs are metabolized in obese patients.Phase I metabolism sees variable effects across...
Regression Toward the Mean01:52

Regression Toward the Mean

Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when researchers try to extrapolate results...

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Updated: May 13, 2026

Multidisciplinary Approach to Obesity Management: A Case Report
05:10

Multidisciplinary Approach to Obesity Management: A Case Report

Published on: May 30, 2025

Weight loss before conception: A systematic literature review.

Elisabet Forsum1, Anne Lise Brantsæter, Anna-Sigrid Olafsdottir

  • 1Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden.

Food & Nutrition Research
|March 19, 2013
PubMed
Summary

Pre-conception weight loss in obese women may reduce risks like gestational diabetes and large-for-gestational-age infants. However, research on dietary interventions for weight loss before pregnancy is limited, necessitating alternative strategies.

Keywords:
gestational diabeteslarge-for-gestational-age-infantssystematic reviewweight loss before pregnancy

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Area of Science:

  • Reproductive Health
  • Maternal Nutrition
  • Obesity Research

Background:

  • Rising rates of overweight and obesity in women present significant risks for adverse pregnancy outcomes.
  • High pre-conception body mass index (BMI) is an independent risk factor for maternal and infant complications.
  • Dietary counseling for pre-conception weight loss is recommended, but potential risks exist.

Purpose of the Study:

  • To systematically review and assess the effects of pre-conception weight loss on maternal and offspring health outcomes.
  • To evaluate studies published between January 2000 and December 2011 on weight loss interventions prior to conception.

Main Methods:

  • Systematic literature review of studies on pre-conception weight loss in overweight/obese women.
  • Initial search yielded 486 citations; 58 selected for full-text review.
  • Fifteen studies underwent quality assessment, with two included in evidence tables.

Main Results:

  • Limited evidence suggests pre-conception weight loss may reduce the risk of gestational diabetes.
  • One study indicated a reduced risk of large-for-gestational-age infants with pre-conception weight loss in women with BMI > 25.
  • No studies specifically investigated the effects of dietary interventions for weight loss prior to conception.

Conclusions:

  • There is a significant lack of research on the impact of dietary-induced pre-conception weight loss on maternal and infant health.
  • Conducting such studies is challenging, highlighting the need for alternative approaches.
  • Alternative strategies for weight management in women of reproductive age are required.