Adults with type 2 diabetes who follow a calorie-restricted diet for one year continue to lose weight and improve blood sugar levels 18 months after stopping the diet, whether the diet was higher in...

Pro

Against

Mechanism

Synthesis from 1 study

How it works

Eating fewer calories for a year helps the body burn off excess fat stored in the liver and muscles. This makes insulin work better to control blood sugar, and even after going back to normal eating, the body keeps burning fat more efficiently, so weight and blood sugar stay improved.

Most probable mechanism

In Simple Terms

When a person eats fewer calories for a long time, the body starts using stored fat for energy. This reduces fat buildup in the liver and muscles, which lets insulin work better to lower blood sugar. Even after eating normally again, the body keeps using fat more efficiently, so weight stays lower and blood sugar stays under control.

Causal chain

Chronic energy restriction depletes hepatic and intramuscular triglyceride stores by increasing fatty acid oxidation and reducing de novo lipogenesis.

Verified by multiple studies

which leads to

Reduced lipid accumulation in liver and muscle cells decreases diacylglycerol and ceramide levels, which inhibits serine phosphorylation of insulin receptor substrate-1.

Supported by evidence

which leads to

Improved insulin receptor signaling enhances glucose transporter type 4 translocation to the cell membrane in skeletal muscle and adipose tissue.

Supported by evidence

which leads to

Sustained reduction in ectopic fat and improved insulin sensitivity persist after dietary intervention ends due to epigenetic and metabolic memory in adipose and muscle tissue.

Indirect evidence only

Evidence from Studies

Supporting (1)

Community contributions welcome

One-Year Comparison of a High–Monounsaturated Fat Diet With a High-Carbohydrate Diet in Type 2 Diabetes

Randomized Controlled Trial

Human

2009 Feb

Contradicting (0)

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

One-Year Comparison of a High–Monounsaturated Fat Diet With a High-Carbohydrate Diet in Type 2 Diabetes

Score: 63

DOI: 10.2337/dc08-0687

Similar Assertions

In adults who are overweight or obese and have type 2 diabetes, eating a low-calorie diet rich in monounsaturated fats for one year leads to about the same improvements in weight, waist size, body fat, blood sugar, and blood pressure as eating a low-calorie diet rich in carbohydrates, even though the types of fats and carbs differ.

82%

If an obese person with type 2 diabetes eats only 600–850 calories a day for a few months, about half of them will no longer have diabetes after a year—and about a third will still be diabetes-free two years later, especially if they lost a lot of weight early on and haven’t had diabetes for very long.

80%

For people with type 2 diabetes, how closely they follow a reduced-calorie diet matters more for losing weight and reducing body fat than whether their diet is higher in fats or carbohydrates.

80%

In obese adults with type 2 diabetes, losing weight through diet and exercise improves blood sugar control, reduces body fat, and increases aerobic fitness, and these improvements continue for at least one year after the program ends.

78%

For adults with type 2 diabetes, receiving structured dietary advice for one year leads to higher fiber intake and better blood fat levels, including higher HDL cholesterol and lower diastolic blood pressure, no matter if the diet is higher in fats or carbohydrates.

78%