What is type 2 diabetes?

Type 2 diabetes is a metabolic condition characterised by insulin resistance and progressive impairment of insulin secretion, resulting in chronically elevated blood glucose. It develops as a result of the interaction between genetic susceptibility and lifestyle factors — particularly excess body weight, physical inactivity, and a diet high in refined carbohydrates and ultra-processed foods. It significantly increases risk of cardiovascular disease, kidney disease, neuropathy, and vision problems.

What lifestyle changes have the best evidence for type 2 diabetes?

Weight loss — even modest amounts (5–10%) — significantly improves insulin sensitivity and glycaemic control. A low-glycaemic, whole-food diet with adequate protein and fibre is consistently evidence-supported. Regular aerobic and resistance exercise improves insulin sensitivity independently of weight. Sleep optimisation and stress management also meaningfully affect blood glucose. In recently-diagnosed cases, intensive lifestyle change can achieve remission — restoration of normal blood glucose without medication.

What complementary approaches support diabetes management?

Nutritional therapy is directly relevant — personalised dietary approaches addressing glycaemic response, nutrient density, and metabolic health are a core component of type 2 diabetes management. Acupuncture has emerging evidence for glycaemic improvement and neuropathy management. Berberine has evidence comparable to metformin for blood glucose lowering in some studies, though supplementation should be discussed with a prescriber given its potency. Mind-body approaches address the significant psychological burden of diabetes management.

Can type 2 diabetes be reversed?

Remission — sustained normal blood glucose without medication — is achievable for a proportion of people with type 2 diabetes, particularly in those with shorter duration of diagnosis and where significant weight loss is achieved. The DiRECT trial demonstrated 46% remission at one year and 36% at two years with intensive dietary support. Remission is most accessible early in the disease course — this is a meaningful incentive for early, intensive lifestyle intervention.

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Type 2 diabetes mellitus

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Reviewed by Dr. Ian Henderson · Microbiobial Health & Medicine26 March 2026Research-supported

Quick answer

Type 2 diabetes mellitus involves impaired insulin sensitivity and blood glucose regulation, with significant lifestyle, dietary, and metabolic components. Functional nutrition, movement, stress reduction, and gut microbiome support have strong evidence for improving glucose control alongside conventional medical management.

Do any of these feel familiar?

Type 2 diabetes mellitus often develops quietly, with many people experiencing no obvious symptoms in the early stages
When symptoms do appear, they commonly include persistent thirst, more frequent urination — particularly at night — and unexplained fatigue that rest does not fully relieve
Blurred vision, slow-healing wounds, and recurrent skin or urinary infections are also frequently reported
Some people describe a general heaviness or fogginess that makes it hard to function at their usual level
The diagnosis can feel confronting — particularly given the lifestyle changes required — but many people find that active management significantly improves how they feel day to day

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Overview

Symptoms & Affected Systems

Contributing Factors

Supporting Lifestyle Strategies

Evidence Context

When to Seek Professional Help

Related Conditions

Hormonal Imbalance

Thyroid Imbalance

Reactive Hypoglycaemia

Type 2 Diabetes

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