24/10/2025
THE VICIOUS CYCLE OF FAD DIETS: WHY QUICK FIXES FAIL
In a world of instant gratification, the promise of rapid weight loss through fad diets is incredibly tempting. From detox teas to keto, juice cleanses to carnivore diets, these popular eating patterns often go viral on social media – but are they sustainable, healthy, or safe?
As a registered dietitian, I see firsthand the physical and emotional toll that fad diets take on individuals. Let’s explore the science behind this cycle and why it’s time to break free from it.
🔄 Understanding the Fad Diet Cycle - Fad diets usually involve:
• Severely restricting calories or entire food groups
• Promising rapid, dramatic weight loss
• Relying on unbalanced or non-evidence-based nutrition advice
• Often promoted by celebrities or influencers, not qualified health professionals
📉 Initially, you may lose weight quickly due to water loss, muscle breakdown, or caloric restriction. However, this is rarely fat loss, and it’s not sustainable.
Once the body perceives a threat of starvation, metabolic adaptation occurs – your metabolism slows down, hunger hormones increase, and the urge to binge becomes stronger.
This leads to:
1. Rapid regain of weight (often more than was lost)
2. Feelings of failure, guilt, and frustration
3. Starting another diet… and the cycle continues
This cycle affects more than just your waistline. Fad dieting can lead to:
• Disordered eating patterns (e.g. binge eating, food obsession)
• Body dissatisfaction and low self-esteem
• Anxiety around food and social eating
• Increased risk of eating disorders
Research shows that repeated dieting is a strong predictor of long-term weight gain, not loss.
Registered dietitians are ethically and professionally bound to provide individualised, evidence-based nutrition care.
✅ Sustainable weight management involves:
• Balanced, nutrient-dense meals from all food groups
• Regular physical activity
• Behavioural and lifestyle changes
• Emotional support and realistic goal setting
❌ We do not endorse extreme diets, unregulated supplements, or meal plans that fall below recommended energy requirements.
👉 Work with a registered dietitian to build a healthy relationship with food
👉 Focus on health, not just weight
👉 Prioritise consistency over perfection
👉 Practice gentle nutrition and mindful eating
Your health is worth more than a quick fix.
Charnè Smit
Registered Dietitian
www.csdietitian.co.za
charne@csdietitian.co.za
