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CCN: Nutrition and Lifestyle Modification

CCN · Work through your exam, one topic at a time.

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Nutrition and Lifestyle Modification

This domain tests whether you can convert assessment findings into a plan a real person will follow. Expect questions on behaviour-change stage, counselling technique, dietary pattern selection, and quantified lifestyle targets.

Behaviour-change frameworks

  • Precontemplation (not considering change within 6 months): raise awareness and build rapport; giving a meal plan here is the classic wrong answer.
  • Contemplation (considering within 6 months): use decisional balance, explore pros and cons, elicit change talk.
  • Preparation (planning within about 30 days): negotiate one concrete SMART goal.
  • Action (under 6 months): self-monitoring, stimulus control, problem-solving, environmental restructuring.
  • Maintenance (over 6 months): relapse-prevention planning and lapse management.
  • Motivational interviewing uses OARS (open questions, affirmations, reflections, summaries) and suppresses the righting reflex; ambivalence is normal, not resistance to be argued down.

Quantified prescription targets

  • A 500–750 kcal/day deficit produces roughly 0.5–0.75 kg/week; 5–10% weight loss already improves blood pressure, glycemia, and lipids.
  • DASH and Mediterranean patterns are the best-evidenced dietary frameworks; sodium at or below 2300 mg/day (1500 mg for hypertension) with potassium 3500–5000 mg/day from food.
  • Fibre: 25 g/day for women, 38 g/day for men (about 14 g per 1000 kcal).
  • Activity: 150–300 minutes/week of moderate aerobic work plus at least two resistance sessions; break up sedentary time.
  • Address alcohol, sleep (7–9 hours), and tobacco; these modify every other outcome.

Worked example

A 52-year-old man has blood pressure 148/92 mmHg, BMI 31, and a sedentary job; he says he has thought about changing but is not ready. Handing him a DASH menu is premature. Better: reflect his ambivalence, clarify what matters to him, then agree one SMART goal such as a 15-minute walk after dinner on four weekdays, plus one DASH-consistent swap (fruit for an afternoon snack). Sodium reduction and structured follow-up come at the next visit.

Traps

Prescribing action to a precontemplator; substituting education for counselling; goals that fail the SMART test; dropping calories below about 1200 kcal (women) or 1500 kcal (men) without supervision; ignoring alcohol and sleep; treating a lapse as failure rather than data.