I have been on 50mg of Natrol brand DHEA since 38, I am now 56 (so guess I AM that long term test guinna pig they seem to be looking for) I have NO health problems at ALL at this age, and can still outrun my 20 year old son, no blood pressure or colesterol problems, and am 5’10” at 145 (still wear the same pant size I did in high school. Personally, I swear by this stuff, and can definately TELL when i miss a few days (i have tested this theory my self many times through the years just to be sure it wasn’t the plecebo affect.. trust me, it isn’t. I still have a full head of hair (NO loss), can still keep up with 4-5 times a night in bed with NO assit, and am constantly told i look 10 to 15 years younger than i am……….and still FEEL 30 ! It someone is looking for a test subject, i’m your man ! 🙂 I’ll never stop taking it, i don’t care WHAT the research says are side affects..