
En studie visar hur en vanlig glukosbelastning (alltså intag av glukos, vilket höjer blodsockret) sänker mäns testosteron med i genomsnitt 25%. Testosteronnivåerna fortsatte vara låga när man mätta dem två timmar efter glukosbelastningen. Och denna sänkning av testosteron skedde både hos dem som hade normal insulinfunktion / glukostolerans och dem som var insulinresistenta.
Kan alltså vara värt att titta åt lågkolhydratkost för att höja/normalisera sitt testosteron. Undvik snabba kolhydrater, socker och processad mat; och ät riktig och oprocessad mat 🥑🥦🥬🍳🥩🐟🍅🍆🥕
Och tänk på att testosteron är mycket viktigt även för kvinnors hälsa och välmående….
This study examines the physiological impact of a glucose load on serum testosterone (T) levels in men with varying glucose tolerance (GT).
Cross-sectional study.
74 men (19–74 years, mean 51·4 ± 1·4 years) underwent a standard 75-g oral glucose tolerance test with blood sampling at 0, 30, 60, 90 and 120 min. Fasting serum glucose, insulin, total T (and calculated free T), LH, SHBG, leptin and cortisol were measured.
57% of the men had normal GT, 30% had impaired GT and 13% had newly diagnosed type 2 diabetes. Glucose ingestion was associated with a 25% decrease in mean T levels (delta = −4·2 ± 0·3 nm, P < 0·0001). T levels remained suppressed at 120 min compared with baseline (13·7 ± 0·6 vs 16·5 ± 0·7 nm, P < 0·0001) and did not differ across GT or BMI. Of the 66 men with normal T levels at baseline, 10 (15%) had levels that decreased to the hypogonadal range (<9·7 nm) at one or more time points. SHBG, LH and cortisol levels were unchanged. Leptin levels decreased from baseline at all time points (P < 0·0001).
Glucose ingestion induces a significant reduction in total and free T levels in men, which is similar across the spectrum of glucose tolerance. This decrease in T appears to be because of a direct testicular defect, but the absence of compensatory changes in LH suggests an additional central component. Men found to have low nonfasting T levels should be re-evaluated in the fasting state.
https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-2265.2012.04486.x
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