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Are long-term FAD diets restricting micronutrient intake? A randomized controlled trial

Food Science and Nutrition, ISSN: 2048-7177, Vol: 8, Issue: 11, Page: 6047-6060
2020
  • 8
    Citations
  • 0
    Usage
  • 62
    Captures
  • 1
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    8
  • Captures
    62
  • Mentions
    1
    • Blog Mentions
      1
      • Blog
        1

Article Description

The micronutrient adequacy of common fad diets is rarely assessed. We compared a high-fiber diet [HF] with a low-carbohydrate diet [LC] to assess their effects on body weight and micronutrient adequacy. One hundred and seventy-three adult males and females with or without diabetes with a mean body mass index of 36 kg/m were randomized to either a HF or LC diet. Differences in anthropometrics, blood lipids, glucose, blood pressure, and micronutrient consumption between groups were assessed after 52 weeks. Differences between groups a priori were assessed using independent t tests and chi-squared tests. Post hoc differences in nutrient consumption between groups while controlling for gender were assessed using factorial analysis of variance. After 52 weeks, LC dieters (n = 24) retained weight loss better than their HF counterparts (n = 30) (p =.06). LC dieters consumed more vitamin K (mcg) [HF = 124.0 ± 15.0; LC = 220.0 ± 39.1; p =.025] and vitamin B12 (mcg) [HF = 3.1 ± 0.3; LC = 4.1 ± 0.4; p =.026]. The HF group consumed more folate (mcg) [HF = 479.9 ± 34.0); LC = 333.8 ± 22.1; p <.001], magnesium (mg) [HF = 353.1 ± 17.4; LC = 281.1 ± 18.0; p <.001], and iron (mg) [HF = 14.6 ± 0.8; LC = 10.7 ± 0.6; p <.001. Both groups consumed less than the respective EAR for vitamins D and E and less than the AI for potassium. While a LC diet may be more effective for long-term weight loss, both diets were deficient in micronutrients.

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