First off cholesterol is an essential precursor for testosterone production. Researchers studied the effects on cholesterol and muscle building. They took 25 men and 30 women and had them fill out food diaries of what they ate for 12 weeks a long with a resistance training program. After the 12 weeks researchers compared the relationship between dietary cholesterol and gains in muscle mass. At the end of the study, the average dietary cholesterol consumption was strongly associated witht the change in lean mass. Interestingly enough, although dietary protein was correlated with dietary cholesterol, protein by itself was not significantly correlated with change in lean mass. This means the researchers found that cholesterol-but not protein- was associated in lean muscle mass. This means that all those cholesterol/yolk free egg products are a waste of you're $$.
A study published in Endocrinolgy found that an increase in leutinizing hormone (a hormone that signals test production) resulted in an increase in the synthesis of cholesterol synthesis and uptake in the testis. So if you are on a low cholesterol diet, it may have an impact on building muscle due to impaired androgen production.
This was taken from the Nutrition Performance by Robbie Durand,MA. M.D. magazine
Sources: Eacker SM, Agrawal N, Qian K, Dichek HL, Gong EY, Lee K, Braun RE. Hormonal regulation of testicular steroid and cholesterol homeostasis.Mol Endocrinol 2008 Mar;22(3):623-35.
Riechman SE, et. al. Statins and dietary and serum cholesterol are associated with with increased lean muscle mass following resistance training. J Gerontol A Biol Sci Med Sci, 2007 Oct;62(10): 1164-71
Any comments or questions are more than welcomed!
A study published in Endocrinolgy found that an increase in leutinizing hormone (a hormone that signals test production) resulted in an increase in the synthesis of cholesterol synthesis and uptake in the testis. So if you are on a low cholesterol diet, it may have an impact on building muscle due to impaired androgen production.
This was taken from the Nutrition Performance by Robbie Durand,MA. M.D. magazine
Sources: Eacker SM, Agrawal N, Qian K, Dichek HL, Gong EY, Lee K, Braun RE. Hormonal regulation of testicular steroid and cholesterol homeostasis.Mol Endocrinol 2008 Mar;22(3):623-35.
Riechman SE, et. al. Statins and dietary and serum cholesterol are associated with with increased lean muscle mass following resistance training. J Gerontol A Biol Sci Med Sci, 2007 Oct;62(10): 1164-71
Any comments or questions are more than welcomed!