White sweet potato as meal replacement for overweight white-collar workers: A randomized controlled trial

Chun Kuang Shih, Chiao Ming Chen, Tun Jen Hsiao, Ching Wen Liu, Sing Chung Li

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


Overweight and obesity are a global concern. Meal replacements (MRs) are portion-and calorie-controlled meals, which make the food environment part of an individual’s weight loss regimen. White sweet potato (WSP; Ipomoea batatas L.), used in traditional medicine in Brazil, Japan, and Taiwan, is a healthy carbohydrate source. In this randomized controlled trial, we assessed the effects of a WSP formula on body weight management in 58 white-collar workers through MR to elucidate the effects of this WSP-MR on factors leading to overweight. The participants consumed either two packs a day for a total of 132 g of WSP (WSP-MR group) or a normal diet daily (non-WSP group) for eight weeks. After eight weeks, body weight, body fat, body mass index, wrist circumference, thigh circumference, calf circumference, mid-arm circumference, and triceps skinfolds decreased significantly in both the groups. Moreover, the WSP-MR group demonstrated a 5% decrease in body weight, body fat, body mass index, and mid-arm circumference and a 3.5% decrease in glycated hemoglobin levels (p < 0.05). The treatment was well tolerated, without side effects or adverse events. Thus, our WSP formula as an MR can facilitate individual weight loss and thus has commercial application in the food industry.

Original languageEnglish
Article number165
Issue number1
Publication statusPublished - Jan 1 2019


  • Glycated hemoglobin
  • Meal replacement
  • Overweight
  • White sweet potato
  • Body Mass Index
  • Body Weight
  • Blood Glucose/metabolism
  • Humans
  • Middle Aged
  • Alanine Transaminase/blood
  • Male
  • Creatinine/blood
  • Overweight/diet therapy
  • Obesity/diet therapy
  • Cholesterol/blood
  • Diet
  • Aspartate Aminotransferases/blood
  • Triglycerides/blood
  • Adult
  • Biomarkers/blood
  • Female
  • Meals
  • Ipomoea batatas/chemistry

ASJC Scopus subject areas

  • Food Science
  • Nutrition and Dietetics


Dive into the research topics of 'White sweet potato as meal replacement for overweight white-collar workers: A randomized controlled trial'. Together they form a unique fingerprint.

Cite this