Insulin Sensitivity Affects Testosterone Levels in the Body

Insulin sensitivity affects testosterone levels in the bodyJanuary 7th, 2010 – Research has shown that people with type II diabetes and metabolic syndrome (i.e. insulin resistance) have significantly lower testosterone levels than regular men. (1,2) Insulin resistance is basically a condition where the insulin created by the body is insufficient to drive nutrients into the muscle and fat cells. This stems from having chronically elevated blood insulin levels.

Under constant stimulation from insulin, cellĂ­s become less sensitive to its effects, requiring more and more insulin to get nutrients into the cells. Therefore, anything which drives up blood sugar – like sugar, rice, pasta, beer, carbs of all kinds – and thus insulin levels can lead to a reduction in insulin sensitivity. Reduced insulin sensitivity equals lower testosterone levels.

References –

1. The dark side of testosterone deficiency: II. Type 2 diabetes and insulin resistance.

Traish AM, Saad F, Guay A.

J Androl 2009 Jan-Feb;30(1):23-32

2. Low testosterone levels are common and associated with insulin resistance in men with diabetes.

Grossmann M, Thomas MC, Panagiotopoulos S, Sharpe K, Macisaac RJ, Clarke S, Zajac JD, Jerums G.

J Clin Endocrinol Metab. 2008 May;93(5):1834-40

Carbohydrates Negatively Effect Growth Hormone

boost GH levelsWe’ve all heard that growth hormone (GH) does a ton of great stuff for our bodies including burning body fat, increasing protein synthesis, increasing nitrogen retention, and decreasing protein catabolism. (1) This means more muscle, less fat, and a happier, healthier, sexier you. So how can we maximize the effects and release of growth hormone we get in response to strenuous exercise?

Keep your post workout carbohydrate levels in check.

When we exercise, blood glucose and insulin levels decrease, and GH levels increase. GH levels can remain this way for an hour or more. (2) However, as soon as blood glucose and insulin levels rise, GH levels will drop back down, as insulin acts to suppress GH secretion. (3) Keeping carbohydrate intake to a minimum after exercise will keep blood glucose and insulin levels down and GH up for a longer period of time.

How do you boost GH levels and keep it elevated after a workout? Consider protein instead of carbs for your post workout nutrition!

References –

1. Amino Acids and Proteins for the Athlete: The Anabolic Edge
Mauro G. Di Pasquale
CRC Press 2008 Pages 27-28

2. Plasma insulin, growth hormone, and blood sugar during exercise in man
Sawhney RC, Malhotra AS, Gupta RB.
Indian J Physiol Pharmacol. 1982 Apr-Jun;26(2):119-24

3. Good Calories Bad Calories
Gary Taubes
Alfred A Knopf 2007 Pages 390-391

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