A very low carbohydrate diet improved metabolic profile in congenital generalized lipodystrophy type 4.
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
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
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 |
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.