Think that might have something to do with the constant rise in people eating junk food? Theres more and more fast food places opening up all the time and people are drinking things like energy drinks and fizzy cola beverages more than ever. None of these things help with T-levels. How does a doctor test for it? I assume its a blood sample?
Terrible diets in general do have an impact on a male's test production yes. Taking care of yourself and exercising is one of the best ways to increase natural test production. However, there are also a lot of other things impacting this. Soy products naturally increase estrogen in the system and numerous babies are raised on soy-based formula. The use of the birth control pill has also increased estrogen compounds in the water supply which has shown to have distinct negative effects on males.
Men's health articles and magazines are always geared towards maintaining heart health and prostate health, which are great things yes, but its time we all start taking our test levels seriously.
Yes all it takes is a blood test. Tell your doc you want to know everything about your hormone levels.