Diabetes type 2 is caused by the pancreas not producing enough of the hormone insulin, or the body not reacting to insulin, the NHS said.
A lack of insulin prevents sugar from being converted into energy.
The condition increases the risk of cardiovascular disease, but it may be possible to reverse the condition.
Sarah Groom, 39, cured her type 2 diabetes by follow a low-carb diet, she claimed.
Groom was diagnosed with diabetes over the Easter period last year.
She experienced bad headaches, tiredness and a weak bladder.
But, after starting the Low Carb Program, and cutting out bread and sugar, Groom said she instantly felt more energetic.
Since starting the diet plan in May 2017, Groom’s glycated haemoglobin (HBA1c – an indicator of blood sugar) dropped from 50 to 34.
A patient may have diabetes if their HBA1c is over 48. Between 42 and 47 signals pre diabetes, while anything under 42 is considered normal.
Groom also claimed to have lost five stone since beginning the diet plan.
The Low Carb Program addresses three sources of sugar in the diet. That includes natural sources – fruit and honey – or sugars added to products.
It also includes sugar from digested carbohydrates.
It’s available to download on smartphones, and is personalised for every single patient.
The Low Carb Program’s creator, Arjun Panesar, said: “The Low Carb Program is demonstrating that it is possible to place type 2 diabetes into remission using a nutrition focused approach.
“Most people who complete the program improve their blood glucose levels, sustainably lose weight and reduce their dependency on medication.”
If you’re at risk of developing diabetes, you may be able to prevent the condition by making some lifestyle changes, the NHS said.
Eating a healthy, balanced diet could lower your chances of the condition.
Regular exercise, cutting back on alcohol and losing weight if you’re overweight could all help to prevent diabetes.
About 3.1 million people have diabetes in the UK.