ABSTRACT
OBJECTIVES: Heavy metals ingested through the consumption of aquatic products can accumulate in the human body over the long-term and cause various health problems. This study aims to present comprehensive data on the amount of heavy metals found in fish and shellfish in Korea using a systematic review of studies that report on that issue. METHODS: The study used the following databases: PubMed, Korean Studies Information Service System, and Research Information Sharing Service. The search terms for PubMed included fish OR shellfish OR seafood AND mercury OR cadmium OR lead OR heavy metal AND Korea. The search terms for Korean Studies Information Service System and Research Information Sharing Service included eoryu sueun, eoryu kadeumyum, eoryu nab, eoryu jung-geumsog, paeryu sueun, paeryu kadeumyum, paeryu nab, paeryu jung-geumsog, eopaeryu sueun, eopaeryu kadeumyum, eopaeryu nab, and eopaeryu jung-geumsog. RESULTS: A total of 32 articles were selected for review. The total mercury, lead, and cadmium concentrations in fish and shellfish reported in each of the articles are summarized, as are the species of fish and shellfish with relatively high concentrations of heavy metals. Total mercury concentrations tended to be higher in predatory fish species, such as sharks, billfishes, and tuna, while lead and cadmium concentrations tended to be higher in shellfish. CONCLUSION: This paper is the first to report a comprehensive summary of the concentrations of heavy metals in fish and shellfish. This data could be used as evidence to protect Koreans from exposure to heavy metals due to the consumption of highly polluted aquatic products.
Subject(s)
Cadmium , Fishes , Human Body , Information Dissemination , Information Services , Korea , Metals, Heavy , Seafood , Sharks , Shellfish , TunaABSTRACT
The purpose of this study was to investigate the effect of medical nutrition therapy (MNT) on anthropometric measurements, quality of diets, and blood parameters through the weight loss program in over weight and obese women. The subjects (n = 76, age 31.1 +/- 8.4 y, weight 70.3 +/- 7.9 kg, BMI 27.2 +/- 2.4 kg/m2) without medical disease were treated with MNT 5 times for 12 weeks by dietitian. Anthropometric measurements included height, weight, fat mass, lean body mass, triceps and thigh skin-fold thickness, mid-arm, waist, hip and thigh circumference. Dietary assessments were accomplished using 3-days food records, diet quality index (DQI), and dietary pattern. The dietary pattern was assessed by daily energy intakes from breakfast, lunch, dinner, and snacks of calorie density, and numbers of eating. Blood levels of leptin, lipid profiles (total lipids, total cholesterol, LDL-cholesterol, HDL-cholesterol), and insulin were analyzed. Anthropometric measurements decreased significantly after MNT (p < 0.001). Waist circumference was reduced most rapidly and tricep skin-fold thickness was reduced most effectively after 12 weeks of MNT. Daily energy intake, calorie density and numbers of eating incidence decreased significantly (1796.4 +/- 395.5 vs 1402.9 +/- 217.8 kcal/day, 162.3 +/- 56.5 vs 113.4 +/- 30.1, 5.0 +/- 1.4 vs 3.8 +/- 0.4, respectively, p < 0.05). The daily energy intake from breakfast and snacks significantly decreased (p < 0.001). Calories from snack, calorie density of snack and numbers of snacking also decreased (p < 0.05). The mean scores of DQI significantly increased (7.6 +/- 2.1 vs 6.5 +/- 1.6, p < 0.05). The plasma levels of total lipid, triglyceride (TG), total cholesterol, LDL-cholesterol and leptin decreased significantly after MNT (489.8 +/- 100.4 vs 447.0 +/- 87.3 mg/dL, 187.7 +/- 34.0 vs 175.9 +/- 31.5 mg/dL, 115.2 +/- 29.2 vs 109.2 +/- 26.7 mg/dL, 15.7 +/- 7.6 vs 12.4+/- 5.9 ng/mL, respectively, p < 0.05). These results indicate that MNT efficiently reduced the body weight through the changes in dietary intake, dietary patterns and dietary quality. MNT also changed body composition and reduced the levels of plasma lipid, cholesterol and leptin.