Long-term effects of commonly available weight reducing programmes in Sweden

Area of Science:

• Nutrition and Dietetics
• Public Health
• Consumer Science

Background:

• Many individuals seek weight loss solutions outside of medical guidance.
• Consumer groups frequently encounter unsubstantiated claims from slimming products.
• Evaluating the long-term efficacy of popular weight loss methods is crucial.

Purpose of the Study:

• To assess the long-term effectiveness of four common weight loss methods in Sweden.
• To compare the sustained weight loss achieved by different dietary and lifestyle interventions.
• To investigate adherence to weight loss programs over a two-year period.

Main Methods:

• A two-year longitudinal study involving 120 moderately overweight women.
• Participants were allocated to one of five groups, including protein powder, kelp-lecithin-vitamin capsules, nutritional advice, a 'slim club' program, and a control.
• Data collection involved repeated interviews and monitoring of participants.

Main Results:

• Protein powder and kelp-lecithin-vitamin capsules showed poor long-term results.
• Nutritionally adequate recommendations without program support also yielded unsatisfactory outcomes.
• A commercial 'slim club' program demonstrated the greatest sustained weight loss (2.8 +/- 4.7 kg).

Conclusions:

• The majority of participants struggled with adherence to weight loss programs due to perceived unsatisfactory results.
• Effective weight management requires sustainable programs with adequate support and follow-up.
• Documenting long-term outcomes is vital to combat scientifically unsound weight reduction methods.