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Background and Objectives: The excessive intake of trans fatty acids increases serum low-density lipoproteincholesterol and reduces high-density lipoprotein-cholesterol. We studied the effects of 1% energy trans fatty acid supplementation on serum lipid concentrations in healthy adult Japanese with different obesity-related gene polymorphisms., Methods and Study Design: A randomized, double-blind, parallel trial was conducted in 53 healthy adults. The volunteers consumed one cookie containing either 1% energy or <0.01% energy (control) of trans fatty acids every day for 4 weeks, and a blood sample was then obtained after overnight fasting. The single nucleotide polymorphisms of the fat mass- and obesity-associated gene rs9939609 and beta-3 adrenergic receptor rs4994 were genotyped., Results: The mean trans fatty acid intake of the control and trans fatty acid groups corresponded to 0.28% and 1.31 % energy, respectively. There were no significant differences in serum cholesterol (total, low-density lipoprotein and high-density lipoprotein) or triacylglycerol between the control and trans fatty acid groups. The responses of serum cholesterol, triacylglycerol, glucose, insulin and hemoglobinA1c were also independent of the fat mass- and obesity-associated gene and beta-3 adrenergic receptor gene variants., Conclusions: Our findings indicate that supplementation with 1% energy trans fatty acids has little effect on serum cholesterol in healthy adult Japanese, regardless of genotype of fat mass- and obesity-associated gene or beta-3 adrenergic receptor. More systematic studies, with respect to dietary trans fatty acid intakes above those used here, may be warranted to determine the tolerable upper level of dietary trans fatty acid.

The excessive intake of trans fatty acids (TFAs) increases serum LDL-cholesterol and reduces HDL-cholesterol. Limited data exist regarding the low-level intake of TFAs, and the tolerable upper-limit level remains to be fully elucidated. A randomized, double-blind, parallel trial was conducted to assess the effects of a low level of TFA supplementation on serum cholesterol levels in healthy adult Japanese women. The volunteers who participated in this examination took in approximately 0.4% of energy (%E) TFAs from daily meals. Fifty-one volunteers consumed one cookie containing 0.6%E (TFA) or 0.04%E (control) of TFAs every day for 4 wk, and blood was harvested after overnight fasting. The mean TFA intakes of the control and TFA groups during the experimental period were 0.4%E and 1.1%E, respectively. There were no significant differences in serum total, LDL- or HDL-cholesterol levels between the control and TFA groups. The serum glucose and insulin levels were not influenced by TFA supplementation. These results confirm that dietary supplementation with 0.6%E TFAs (a total TFA intake of approximately 1%E) would have little effect on serum cholesterol levels in healthy adult Japanese women.

There are very limited data concerning the influence of low-level trans fatty acid (TFA) intake on blood lipid levels. In this study, correlation of total and diene TFA intake with serum cholesterol levels was studied in young Japanese women. The mean intakes of total and diene TFAs were 0.36% and 0.05% of energy, respectively. There was a significant correlation between total fat intake and TFA intake. TFA intake was significantly correlated with erythrocyte TFA content. Total TFA intake was not correlated with total, LDL- or HDL-cholesterol levels. No correlatuon was found between diene TFA intake and cholesterol level. Total and diene TFA intake were not correlated with hemoglobin A1c or C-reactive protein levels. These results suggest that the average TFA intake of young Japanese women does not adversely affect serum cholesterol levels.

A randomized crossover study in healthy young Japanese showed no significant effects of a 0.6% energy trans fatty acid (TFA) intake on the serum cholesterol concentrations and parameters of glucose metabolism. The results indicate that TFAs at this dietary level may have no adverse metabolic effects on healthy young Japanese.

The article focuses on a study related to the correlation between Total Fatty Acids (TFAs) intake and serum cholesterol levels in Japanese women. As per the study, 137 students were recruited from the Department of Food and Nutrition of Toyama College. The study mentions that daily intake of energy, nutrients and TFAs was calculated in volunteers by dietitians using nutrient calculation software. The study further concludes that TFAs intake does not affect serum cholesterol levels.

Background and Objectives: The excessive intake of trans fatty acids increases serum low-density lipoproteincholesterol and reduces high-density lipoprotein-cholesterol. We studied the effects of 1% energy trans fatty acid supplementation on serum lipid concentrations in healthy adult Japanese with different obesity-related gene polymorphisms.Methods and Study Design: A randomized, double-blind, parallel trial was conducted in 53 healthy adults. The volunteers consumed one cookie containing either 1% energy or <0.01% energy (control) of trans fatty acids every day for 4 weeks, and a blood sample was then obtained after overnight fasting. The single nucleotide polymorphisms of the fat mass- and obesity-associated gene rs9939609 and beta-3 adrenergic receptor rs4994 were genotyped.Results: The mean trans fatty acid intake of the control and trans fatty acid groups corresponded to 0.28% and 1.31 % energy, respectively. There were no significant differences in serum cholesterol (total, low-density lipoprotein and high-density lipoprotein) or triacylglycerol between the control and trans fatty acid groups. The responses of serum cholesterol, triacylglycerol, glucose, insulin and hemoglobinA1c were also independent of the fat mass- and obesity-associated gene and beta-3 adrenergic receptor gene variants.Conclusions: Our findings indicate that supplementation with 1% energy trans fatty acids has little effect on serum cholesterol in healthy adult Japanese, regardless of genotype of fat mass- and obesity-associated gene or beta-3 adrenergic receptor. More systematic studies, with respect to dietary trans fatty acid intakes above those used here, may be warranted to determine the tolerable upper level of dietary trans fatty acid. [ABSTRACT FROM AUTHOR]