What lifestyle modifications should I recommend to a patient with acanthosis nigricans to improve their insulin sensitivity?

Guideline-aligned answer with reasoning, red flags and references. Clinically reviewed by Dr Kola Tytler MBBS CertHE MBA MRCGP.

Posted: 22 August 2025Updated: 22 August 2025 Guideline-Aligned (High Confidence) Clinically Reviewed
Dr Kola Tytler MBBS CertHE MBA MRCGPClinical Lead • iatroX

To improve insulin sensitivity in a patient with acanthosis nigricans, which is a cutaneous marker of insulin resistance and hyperinsulinemia, lifestyle modifications are key .

Weight Management:

  • Achieving and maintaining a healthy weight is crucial for improving insulin sensitivity and reducing the risk of diseases associated with overweight and obesity, such as type 2 diabetes .
  • Effective weight-loss programmes should be tailored to individual needs, encourage regular physical activity, and aim for a gradual loss of 0.5 to 1 kg (1 to 2 lb) per week .

Dietary Modifications:

  • Patients should be advised to base meals on starchy foods, choosing wholegrain options where possible, such as potatoes, bread, rice, and pasta .
  • Encourage the consumption of fibre-rich foods, including oats, beans, peas, lentils, grains, seeds, fruit, vegetables, wholegrain bread, and brown rice and pasta .
  • Patients should aim to eat at least five portions of a variety of fruit and vegetables each day, replacing foods higher in fat and calories .
  • Adopting a low-fat diet and avoiding increased fat or calorie intake is recommended .
  • Minimise the consumption of fried food, drinks and confectionery high in added sugars (e.g., cakes, pastries, sugar-sweetened drinks), and other foods high in fat and sugar (e.g., some take-away and fast foods) .
  • Minimise calorie intake from alcohol .
  • Patients should be mindful of portion sizes for meals and snacks, and the frequency of eating throughout the day .
  • Eating breakfast is also recommended .

Physical Activity:

  • Regular physical activity is essential for improving insulin sensitivity .
  • Patients should make enjoyable activities, such as walking, cycling, swimming, aerobics, and gardening, a routine part of their life .
  • Building other activity into their daily routine, such as taking the stairs instead of the lift or walking at lunchtime, is beneficial .
  • Minimise sedentary activities, such as sitting for long periods watching television, at a computer, or playing video games .
  • Using physically active forms of travel, like walking and cycling, should be encouraged .

Supporting Behaviour Change:

  • When recommending these changes, it is important to help patients understand the short, medium, and longer-term consequences of their health-related behaviour .
  • Help them feel positive about the benefits and value of health-enhancing behaviours .
  • Recognise how people's social contexts and relationships may affect their behaviour .
  • Help patients plan changes in terms of easy, sustainable steps over time .
  • Identify and plan for situations that might undermine changes, developing explicit 'if–then' coping strategies to maintain new behaviours .

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