Oral glucose load and mixed meal feeding lowers testosterone levels in healthy eugonadal men

madman

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Conclusion

We demonstrate a significant reduction in concentrations of serum total testosterone in healthy men in response to an oral glucose load (mean reduction of 18% from baseline) and administration of a mixed meal (mean reduction of 26% from baseline. Therefore, measurement of serum testosterone in men presenting for evaluation of hypogonadism should be performed after an overnight fast.
 

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Thanks. Yes, insulin has an inverse relationship with testosterone. Also, Ghrelin decreases when we eat. When insulin goes up and ghrelin goes down, there is a substantial temporary reduction in testosterone. That is why it is best to measure testosterone blood levels when fasting.
 
Thanks. Yes, insulin has an inverse relationship with testosterone. Also, Ghrelin decreases when we eat. When insulin goes up and ghrelin goes down, there is a substantial temporary reduction in testosterone. That is why it is best to measure testosterone blood levels when fasting.
I have been taking 50g of dextrose with my post workout protein for the insulin spike. Thoughts on this as it relates to the above article stating inverse relationship?
 
Conclusion

We demonstrate a significant reduction in concentrations of serum total testosterone in healthy men in response to an oral glucose load (mean reduction of 18% from baseline) and administration of a mixed meal (mean reduction of 26% from baseline. Therefore, measurement of serum testosterone in men presenting for evaluation of hypogonadism should be performed after an overnight fast.

Why is it that the highest possible reading that can be preformed is baseline? Most men will only experience that level for a few hours.

Just always wondered about that, however, it's just one of those things that would be impossible to change.
 

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