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Testosterone Therapy and Liver Fat
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<blockquote data-quote="Nelson Vergel" data-source="post: 156155" data-attributes="member: 3"><p>J Clin Endocrinol Metab. 2019 Aug 1. pii: jc.2019-00160. doi: 10.1210/jc.2019-00160. </p><p></p><p><strong>Overeating saturated fat promotes fatty liver and ceramides compared to polyunsaturated fat: a randomized trial.</strong></p><p></p><p></p><p>CONTEXT:</p><p>Saturated fat (SFA) versus polyunsaturated fat (PUFA) may promote non-alcoholic fatty liver disease (NAFLD) by yet unclear mechanisms.</p><p></p><p>OBJECTIVE:</p><p>To investigate if overeating SFA- and PUFA-enriched diets lead to differential liver fat accumulation in overweight and obese humans.</p><p></p><p>DESIGN:</p><p>Double-blind randomized trial (LIPOGAIN-2). Overfeeding SFA vs PUFA for 8 weeks, followed by 4 weeks of caloric restriction.</p><p></p><p>SETTING:</p><p>General community.Participants: n=61 overweight or obese men and women.</p><p></p><p>INTERVENTION:</p><p>Muffins high in either palm (SFA)- or sunflower oil (PUFA) were added to the habitual diet.</p><p></p><p>MAIN OUTCOME MEASURE:</p><p>Lean tissue mass (not reported here). Secondary and exploratory outcomes included liver and ectopic fat depots.</p><p></p><p>RESULTS:</p><p>By design, body weight gain was similar in SFA (2.31±1.38 kg) and PUFA (2.01±1.90 kg) groups, P=0.50. SFA markedly induced liver fat content (50% relative increase) along with liver enzymes and atherogenic serum lipids. In contrast, despite similar weight gain, PUFA did not increase liver fat or liver enzymes or cause any adverse effects on blood lipids. SFA had no differential effect on the accumulation of visceral fat, pancreas fat or total body fat compared with PUFA. SFA consistently increased, while PUFA reduced circulating ceramides; changes that were moderately associated with liver fat changes and proposed markers of hepatic lipogenesis. The adverse metabolic effects of SFA were reversed by calorie restriction.</p><p></p><p>CONCLUSIONS:</p><p>Saturated fat markedly induces liver fat and serum ceramides whereas dietary polyunsaturated fat prevent liver fat accumulation, reduce ceramides and hyperlipidemia during excess energy intake and weight gain in overweight individuals.</p></blockquote><p></p>
[QUOTE="Nelson Vergel, post: 156155, member: 3"] J Clin Endocrinol Metab. 2019 Aug 1. pii: jc.2019-00160. doi: 10.1210/jc.2019-00160. [B]Overeating saturated fat promotes fatty liver and ceramides compared to polyunsaturated fat: a randomized trial.[/B] CONTEXT: Saturated fat (SFA) versus polyunsaturated fat (PUFA) may promote non-alcoholic fatty liver disease (NAFLD) by yet unclear mechanisms. OBJECTIVE: To investigate if overeating SFA- and PUFA-enriched diets lead to differential liver fat accumulation in overweight and obese humans. DESIGN: Double-blind randomized trial (LIPOGAIN-2). Overfeeding SFA vs PUFA for 8 weeks, followed by 4 weeks of caloric restriction. SETTING: General community.Participants: n=61 overweight or obese men and women. INTERVENTION: Muffins high in either palm (SFA)- or sunflower oil (PUFA) were added to the habitual diet. MAIN OUTCOME MEASURE: Lean tissue mass (not reported here). Secondary and exploratory outcomes included liver and ectopic fat depots. RESULTS: By design, body weight gain was similar in SFA (2.31±1.38 kg) and PUFA (2.01±1.90 kg) groups, P=0.50. SFA markedly induced liver fat content (50% relative increase) along with liver enzymes and atherogenic serum lipids. In contrast, despite similar weight gain, PUFA did not increase liver fat or liver enzymes or cause any adverse effects on blood lipids. SFA had no differential effect on the accumulation of visceral fat, pancreas fat or total body fat compared with PUFA. SFA consistently increased, while PUFA reduced circulating ceramides; changes that were moderately associated with liver fat changes and proposed markers of hepatic lipogenesis. The adverse metabolic effects of SFA were reversed by calorie restriction. CONCLUSIONS: Saturated fat markedly induces liver fat and serum ceramides whereas dietary polyunsaturated fat prevent liver fat accumulation, reduce ceramides and hyperlipidemia during excess energy intake and weight gain in overweight individuals. [/QUOTE]
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Testosterone Therapy and Liver Fat
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