Obesity

The effect of weight loss on whole‐body and tissue‐specific insulin sensitivity and hepatic lipid content and composition: SWEET substudy

Obesity (Silver Spring)Published Secondary analysis of the European SWEET project

Authors' conclusion

Weight loss decreased IHL content and the hepatic saturated fatty acid fraction. The decrease in IHL content was associated with weight-loss-induced improvement in hepatic insulin sensitivity in individuals with overweight or obesity.

Study context

Population
Adults aged 18–65 years with overweight or obesity (BMI ≥ 25 kg/m²)
Participants
50 adults
Comparison
After vs before 2-month low-energy diet
  • Low-energy diet (LED)n = 50
Methodological detailssingle-group, before–after
  • Single-group
  • Before–after

Primary result

As reported in the abstract

2 months
  • After LED vs Baseline: P < 0.001
  • After LED vs Baseline: P < 0.001
  • After LED vs Baseline: P = 0.260

Further findings

OutcomeP value
Body weight · after 2-month LEDReducedP < 0.001
Whole-body insulin sensitivity (Matsuda index) and HIRI · after 2-month LEDMatsuda index increased; HIRI reducedboth p < 0.001
Muscle insulin sensitivity index (MISI) · after 2-month LEDNo changeP = 0.260
IHL content · after 2-month LEDDecreasedP < 0.001
Hepatic saturated fatty acid fraction · after 2-month LEDDecreasedP = 0.039

Body weight · after 2-month LED

The LED reduced body weight

Whole-body insulin sensitivity (Matsuda index) and hepatic insulin resistance index (HIRI) · after 2-month LED

Increased Matsuda index and reduced HIRI

Muscle insulin sensitivity index (MISI) · after 2-month LED

No change in MISI

Intrahepatic lipid (IHL) content · after 2-month LED

Weight loss decreased IHL content

Hepatic saturated fatty acid fraction · after 2-month LED

Weight loss decreased the hepatic saturated fatty acid fraction

Association of reduced IHL content with improvement in HIRI

Correlation (r)
0.402
P
P = 0.025

Original publication

The effect of weight loss on whole‐body and tissue‐specific insulin sensitivity and hepatic lipid content and composition: SWEET substudy. Obesity (Silver Spring). Published 27 June 2023. doi:10.1002/oby.23773

Composed by AI from the published abstract and checked against it. How Briefs are made →

Get them every week

New studies on this topic in My Week and in your Monday e-mail.

We e-mail you a sign-in link and a code. No password, no spam.