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Testosterone Replacement, Low T, HCG, & Beyond
Testosterone and Men's Health Articles
Study - Low Vitamin D linked to Low HDL Cholesterol
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<blockquote data-quote="John O'Connor" data-source="post: 36950" data-attributes="member: 13064"><p><strong>Do Vitamin D Levels Affect Cholesterol? (links at bottom)</strong></p><p>Higher vitamin D levels appear to be associated with higher total cholesterol levels and higher HDL cholesterol levels, according to a new study presented at the American College of Cardiology's (ACC) 65th Annual Scientific Sessions.1 </p><p>Investigators looked 13 039 adults and found that higher 25-hydroxyvitamin D (25[OH]D) was cross-sectionally and prospectively associated with higher total cholesterol and HDL cholesterol levels and lower total cholesterol-to-HDL cholesterol ratio after considering factors such as <a href="http://www.endocrinologyadvisor.com/diabetes/section/4108/" target="_blank">diabetes</a> and adiposity.</p><p></p><p><a href="http://www.endocrinologyadvisor.com/acc-2016/acc-vitamin-d-and-cholesterol-levels/article/488237/?DCMP=EMC-endo_update_rd&cpn=Invokana70068NW&hmSubId=&hmEmail=g7V4GKUZYu0RNel1OYvUThvriYuUEeZn0&NID=1417928003&c_id=1817390&spMailingID=14170481&spUserID=MjI2ODY3MjUyMTQ5S0&spJobID=760511969&spReportId=NzYwNTExOTY5S0" target="_blank">http://www.endocrinologyadvisor.com/acc-2016/acc-vitamin-d-and-cholesterol-levels/article/488237/?DCMP=EMC-endo_update_rd&cpn=Invokana70068NW&hmSubId=&hmEmail=g7V4GKUZYu0RNel1OYvUThvriYuUEeZn0&NID=1417928003&c_id=1817390&spMailingID=14170481&spUserID=MjI2ODY3MjUyMTQ5S0&spJobID=760511969&spReportId=NzYwNTExOTY5S0</a></p><p></p><p>or try this link</p><p><a href="http://www.medicalnewsmediasource.com/do-vitamin-d-levels-affect-cholesterol-endocrinology-advisor/" target="_blank">http://www.medicalnewsmediasource.com/do-vitamin-d-levels-affect-cholesterol-endocrinology-advisor/</a></p><p>“We wanted to see the association of low vitamin D with low HDL cholesterol and high total cholesterol-to-HDL cholesterol ratio, but I think we were most surprised to not find an association of vitamin D deficiency with elevated triglycerides, as has been noted in other studies. This may be in part that we carefully adjusted for other confounding lifestyle variables such as physical activity and 2 measures of adiposity (BMI and waist circumference),” said senior study author Erin Michos, MD, MHS, associate professor of medicine and epidemiology and associate director of preventive cardiology at Johns Hopkins School of Medicine in Baltimore.</p><p>“We also were surprised that we did not see any association of low vitamin D with elevated LDL cholesterol in our overall sample. However, when we performed a sensitivity analysis looking at individuals who were not taking lipid-lowering therapy at the baseline exam or at any of the follow-up visits, we did see the association of low vitamin D with elevated LDL <a href="http://www.endocrinologyadvisor.com/lipids-and-cholesterol/section/4263/" target="_blank">cholesterol</a>.”</p><p>Dr Michos and her colleagues measured lipids at baseline (1990-1992), in 1993-1994, and in 1996-1998. The mean follow-up was 5.2 years.</p><p>The investigators used linear and mixed model regression methods to assess associations of 25(OH) D with cross-sectional and lipid trends. They also adjusted for clinical characteristics. The mean age at baseline was 57.6 years, 57% were women, and 24% were black.</p><p>Among those individuals without baseline <a href="http://www.endocrinologyadvisor.com/dyslipidemia/topic/38894/" target="_blank">dyslipidemia</a>, participants with low 25(OH) D (<20 ng/mL) compared with optimal levels (≥30 ng/mL) had increased risk for incident dyslipidemia in demographic-adjusted models (hazard ratio<hr /><p>=1.19; 95% CI, 1.02-1.39). Nevertheless, this finding was attenuated in fully-adjusted models (HR=1.12; 95% CI, 0.95-1.32).1</p><p></p><p></p><p>Dr Michos said low concentrations of vitamin D, defined as serum 25(OH)D below 30 ng/mL, are present in more than two-thirds of the US adult population and in an estimated 1 billion individuals worldwide. </p><p>“So, this is a major relevant public health issue. Vitamin D deficiency has been associated with a number of non-bone-related adverse health outcomes, including increased risk for cardiovascular diseases (CVDs). One of the mechanisms by which vitamin D may influence CVD risk is through an effect on lipids,” Dr Michos told <em>Endocrinology Advisor. “The potential link between vitamin D deficiency and adverse lipid profile should be of great interest to a large number of practitioners who treat both vitamin D and lipid disorders, including endocrinologists, internists, lipidologists, and cardiologists.”</em></p></blockquote><p></p>
[QUOTE="John O'Connor, post: 36950, member: 13064"] [b]Do Vitamin D Levels Affect Cholesterol? (links at bottom)[/b] Higher vitamin D levels appear to be associated with higher total cholesterol levels and higher HDL cholesterol levels, according to a new study presented at the American College of Cardiology's (ACC) 65th Annual Scientific Sessions.1 Investigators looked 13 039 adults and found that higher 25-hydroxyvitamin D (25[OH]D) was cross-sectionally and prospectively associated with higher total cholesterol and HDL cholesterol levels and lower total cholesterol-to-HDL cholesterol ratio after considering factors such as [URL="http://www.endocrinologyadvisor.com/diabetes/section/4108/"]diabetes[/URL] and adiposity. [url]http://www.endocrinologyadvisor.com/acc-2016/acc-vitamin-d-and-cholesterol-levels/article/488237/?DCMP=EMC-endo_update_rd&cpn=Invokana70068NW&hmSubId=&hmEmail=g7V4GKUZYu0RNel1OYvUThvriYuUEeZn0&NID=1417928003&c_id=1817390&spMailingID=14170481&spUserID=MjI2ODY3MjUyMTQ5S0&spJobID=760511969&spReportId=NzYwNTExOTY5S0[/url] or try this link [url]http://www.medicalnewsmediasource.com/do-vitamin-d-levels-affect-cholesterol-endocrinology-advisor/[/url] “We wanted to see the association of low vitamin D with low HDL cholesterol and high total cholesterol-to-HDL cholesterol ratio, but I think we were most surprised to not find an association of vitamin D deficiency with elevated triglycerides, as has been noted in other studies. This may be in part that we carefully adjusted for other confounding lifestyle variables such as physical activity and 2 measures of adiposity (BMI and waist circumference),” said senior study author Erin Michos, MD, MHS, associate professor of medicine and epidemiology and associate director of preventive cardiology at Johns Hopkins School of Medicine in Baltimore. “We also were surprised that we did not see any association of low vitamin D with elevated LDL cholesterol in our overall sample. However, when we performed a sensitivity analysis looking at individuals who were not taking lipid-lowering therapy at the baseline exam or at any of the follow-up visits, we did see the association of low vitamin D with elevated LDL [URL="http://www.endocrinologyadvisor.com/lipids-and-cholesterol/section/4263/"]cholesterol[/URL].” Dr Michos and her colleagues measured lipids at baseline (1990-1992), in 1993-1994, and in 1996-1998. The mean follow-up was 5.2 years. The investigators used linear and mixed model regression methods to assess associations of 25(OH) D with cross-sectional and lipid trends. They also adjusted for clinical characteristics. The mean age at baseline was 57.6 years, 57% were women, and 24% were black. Among those individuals without baseline [URL="http://www.endocrinologyadvisor.com/dyslipidemia/topic/38894/"]dyslipidemia[/URL], participants with low 25(OH) D (<20 ng/mL) compared with optimal levels (≥30 ng/mL) had increased risk for incident dyslipidemia in demographic-adjusted models (hazard ratio [HR]=1.19; 95% CI, 1.02-1.39). Nevertheless, this finding was attenuated in fully-adjusted models (HR=1.12; 95% CI, 0.95-1.32).1 Dr Michos said low concentrations of vitamin D, defined as serum 25(OH)D below 30 ng/mL, are present in more than two-thirds of the US adult population and in an estimated 1 billion individuals worldwide. “So, this is a major relevant public health issue. Vitamin D deficiency has been associated with a number of non-bone-related adverse health outcomes, including increased risk for cardiovascular diseases (CVDs). One of the mechanisms by which vitamin D may influence CVD risk is through an effect on lipids,” Dr Michos told [I]Endocrinology Advisor. “The potential link between vitamin D deficiency and adverse lipid profile should be of great interest to a large number of practitioners who treat both vitamin D and lipid disorders, including endocrinologists, internists, lipidologists, and cardiologists.”[/I][/HR] [/QUOTE]
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Testosterone Replacement, Low T, HCG, & Beyond
Testosterone and Men's Health Articles
Study - Low Vitamin D linked to Low HDL Cholesterol
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