"The normal range of testosterone is reported as 350- 1200ng/dl. Studies in the 1940's showed the average testosterone level to be at 700 ng/dl, 300 ng/dl higher than for men today. In the past, a drop in testosterone levels to 250 ng/dl was rarely reported before men were 80 years of age. Yet today, it is not an uncommon value for middle aged men!" I tried to click on the original study but got a 404 link not found.
I listened to a health guy who said high normal for a 20 yr old man in 1940 was 2400. Low normal today is 249. Yikes!
"The normal range of testosterone is reported as 350- 1200ng/dl. Studies in the 1940's showed the average testosterone level to be at 700 ng/dl, 300 ng/dl higher than for men today. In the past, a drop in testosterone levels to 250 ng/dl was rarely reported before men were 80 years of age. Yet today, it is not an uncommon value for middle aged men!" I tried to click on the original study but got a 404 link not found.
I listened to a health guy who said high normal for a 20 yr old man in 1940 was 2400. Low normal today is 249. Yikes!