TITLE:
Daily Intake of a Commercially Available Vegetable Juice Has Beneficial Effects on Metabolic Syndrome-Related Biomarkers in Young, Healthy Japanese Adults
AUTHORS:
Kazutaka Yoshida, Mari Mori, Tatsuya Miyashita, Shuko Murakami, Takahiro Inakuma, Satoshi Sunabori, Hiroyuki Suganuma, Yukio Yamori
KEYWORDS:
Vegetable Juice, Carotenoid, Potassium, Metabolic Syndrome, Urinary Sodium to Potassium Ratio
JOURNAL NAME:
Food and Nutrition Sciences,
Vol.7 No.10,
August
24,
2016
ABSTRACT: Adequate
vegetable intake is important in reducing the risk of lifestyle-related
diseases; however, intake amongst young Japanese adults is poor. This study
aimed to assess the effect of daily intake of a commercially available
vegetable juice on nutritional status and metabolic syndrome-related markers in
healthy young adults. Fifty-one healthy adults (14 men, 37 women), age 20 - 22
years were recruited, and their food and nutritional intake was surveyed using
an FFQ based on Food Groups. Subjects were divided into either a control group,
who were not administered vegetable juice, or an intervention group, who
consumed 200 mL vegetable juice daily for 2 months. Anthropometric data, serum
carotenoid concentrations, blood and urinary parameters were measured at
baseline and at 2 months. The average intake of vegetables in all subjects at
baseline was approximately 140 g/day, less than half the dose recommended by
the Japanese government. Total serum carotenoid concentration in the
intervention group doubled from baseline after 2 months. In particular, serum
concentrations of α-carotene, β-carotene, and lycopene were increased.
In the intervention group, 24-hour urinary potassium excretion increased
significantly, and 24-hour urinary sodium to potassium ratio decreased
significantly. Waist circumference and systolic blood pressure also decreased
significantly. Daily intake of a commercial vegetable juice for 2 months
improved nutritional status in young adults with inadequate vegetable intake,
shown by improved serum carotenoid and urine potassium levels. In addition,
intake of vegetable juice may be beneficial in reducing the risk of metabolic
syndrome.