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Obesity Simplified Revision Notes

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Obesity

Diet-Related Diseases

Diet-related diseases are linked to poor dietary and lifestyle choices. Common factors include:

  • Eating too much saturated fat: Increases the risk of obesity, heart disease, and type 2 diabetes.
  • Excess salt intake: Can lead to high blood pressure and strokes.
  • High sugar consumption: Linked to obesity and type 2 diabetes.
  • Low fibre intake: Can result in constipation, piles, and bowel cancer.
  • Excessive alcohol consumption: Associated with obesity, heart disease, liver disease, and type 2 diabetes.
  • Sedentary lifestyle: Contributes to obesity and metabolic disorders.
  • Genetics: Predispose individuals to conditions like heart disease, bowel cancer, and type 1 diabetes.

Obesity

Obesity is defined as being 20% or more above the normal weight for height and build, or having a Body Mass Index (BMI) over 30.

Why People Become Overweight or Obese:

  • Overeating: Calorie intake exceeding output.
  • Lack of exercise: A sedentary lifestyle leads to minimal calorie burn.
  • Poor nutritional knowledge: Limited understanding of balanced diets.
  • Unhealthy eating patterns: Skipping meals or relying on calorie-dense snacks.
  • Low income: Dependence on cheap, processed foods high in fat and sugar.
  • Busy lifestyles: Over-reliance on convenience and takeaway foods.
  • Emotional eating: Using food to cope with stress, anxiety, or boredom.
  • Medical conditions: Hormonal imbalances or medications affecting weight.

Health Risks Associated with Obesity

  • Heart disease
  • High blood pressure
  • Stroke
  • Type 2 diabetes
  • Varicose veins
  • Gout

Treatment of Obesity

  1. Balanced Diet: Follow food pyramid guidelines.
  2. Reduce Portions: Avoid excluding nutrients, but cut portion sizes.
  3. Monitor Calorie Intake: Consume low-calorie diets.
  4. Exercise Regularly: Aim for moderate physical activity.
  5. Regular Meal Patterns: Avoid binge eating and late-night snacks.
  6. Food Labels: Check for fat and sugar content.
  7. Avoid Processed Foods: Choose fresh, wholesome alternatives.
  8. Drink Water: Stay hydrated with at least eight glasses daily.
  9. Low-Fat Cooking: Grill, bake, or steam foods instead of frying.

Recommended Eating Habits

Eat Plenty of:

  • Fresh fruits and vegetables (e.g., apples, spinach).

  • Lean proteins (e.g., turkey, cod).

  • Low-fat dairy products (e.g., milk, yoghurt).

  • Pulses (e.g., lentils, beans). Reduce:

  • Refined carbs (e.g., white bread, pasta).

  • Sugary cereals.

  • High-fat meats (e.g., pork). Avoid:

  • Takeaways and fried foods.

  • Sugary drinks and snacks.

  • Alcohol and fatty spreads.

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