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A very low carbohydrate diet improved metabolic profile in congenital generalized lipodystrophy type 4.

Endocrinology, diabetes & metabolism case reports
January 1, 2025
Sayantan Chakraborty et al. (6 authors)
Journal ArticleHuman Study
Study Details

Study Goal

The researchers aimed to determine whether a very low-carbohydrate diet (30% of total calorie intake) could improve difficult-to-control glycometabolic profiles (glucose and lipid levels) in a patient with congenital generalized lipodystrophy type 4.

Results Summary

Switching to a very low-carbohydrate diet led to a 50% reduction in daily insulin requirement and a significant drop in triglyceride levels (from 950 mg/dL to 600 mg/dL). The study was limited by its single-subject case design and lack of long-term follow-up.

Population

A 17-year-old girl with congenital generalized lipodystrophy type 4, severe hyperglycemia, hypertriglyceridemia, and recurrent acute pancreatitis, from a poor rural family in West Bengal, India.

Effective Dosage

30% of total daily calorie intake from carbohydrates (reduced from 70%).

Duration

Not explicitly stated, but effects were observed after dietary intervention.

Interactions

None mentioned

Extracted Claims (8)
InterventionDirectionEndpointPopulationDosageImpactClaim #
intensive insulin therapy
no change
serum levels of glucose and triglyceride
17-year-old girl with recurrent attacks of acute pancreatitis, severe hyperglycemia and hypertriglyceridemia
no significant change
did not reduce significantly
#1
maximally tolerated doses of metformin (2 g), pioglitazone (45 mg) and fenofibrate (160 mg)
no change
serum levels of glucose and triglyceride
17-year-old girl with recurrent attacks of acute pancreatitis, severe hyperglycemia and hypertriglyceridemia
no significant change
did not reduce significantly
#2
a switch to a very low carbohydrate (30% of total calorie) diet
decrease
glucose and lipid profiles
17-year-old girl with recurrent attacks of acute pancreatitis, severe hyperglycemia and hypertriglyceridemia
-
led to a remarkable improvement
#3
a switch to a very low carbohydrate (30% of total calorie) diet
decrease
daily insulin requirement
17-year-old girl with recurrent attacks of acute pancreatitis, severe hyperglycemia and hypertriglyceridemia
by 50%
came down
#4
a switch to a very low carbohydrate (30% of total calorie) diet
decrease
triglyceride level
17-year-old girl with recurrent attacks of acute pancreatitis, severe hyperglycemia and hypertriglyceridemia
to 600 mg/dL from 950 mg/dL
came down
#5
a carbohydrate restriction strategy
increase
difficult-to-control glycometabolic profile
lipodystrophic subjects on high-carbohydrate diet
-
may improve
#6
a very low carbohydrate diet (30% of total daily calorie intake)
increase
glucose and lipid profiles
patients with lipoatrophic diabetes
-
may significantly improve
#7
Blood glucose control
decrease
hypertriglyceridemia and risk of pancreatitis
this group of patients
-
may be the most important initial step to control
#8
Abstract

SUMMARY: A 17-year-old girl presented with recurrent attacks of acute pancreatitis, associated with severe hyperglycemia and hypertriglyceridemia, despite being on intensive insulin therapy for the last 10 years. She had severe acanthosis nigricans, generalized loss of subcutaneous fat and prominent veins over extremities. The serum levels of glucose and triglyceride did not reduce significantly, even with maximally tolerated doses of metformin (2 g), pioglitazone (45 mg) and fenofibrate (160 mg), not uncommonly seen in poor rural families in West Bengal, India. A detailed dietary recall revealed a very high carbohydrate intake (70% of total calorie) with very low protein and fat intake. A switch to a very low carbohydrate (30% of total calorie) diet led to a remarkable improvement in glucose and lipid profiles (the daily insulin requirement came down by 50% and triglyceride level came down to 600 mg/dL from 950 mg/dL). A whole-exome sequencing study confirmed congenital generalized lipodystrophy type 4. A carbohydrate restriction strategy may improve difficult-to-control glycometabolic profile in lipodystrophic subjects on high-carbohydrate diet. LEARNING POINTS: Lipodystrophy should be suspected in patient presenting with hyperglycemia, hypertriglyceridemia and low BMI. A very low carbohydrate diet (30% of total daily calorie intake) may significantly improve glucose and lipid profiles in patients with lipoatrophic diabetes. Blood glucose may be the most important initial step to control hypertriglyceridemia and risk of pancreatitis in this group of patients.

Study Links
Quality Scores
SafetyNot Assessed
Efficacy80/10
Quality50/10
Citation Metrics
Total Citations1
Citations/Year1.0
Research Impact Scores
APT Score0.25
Weight Score2.14
Normalized Score0.62
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