UT Once seemed to do wonders for me - but not any more?

A few years ago I did UT for a few months or more and it gave me a lot more energy, but that energy seemed to fade away and lately if I drink UT, I don't seem to notice any effect from it. I felt so good then that I was even looking to find a full time job.

Does anyone know why this would be? How can UT once do all these things and now it seems to do nothing?

I eat most organic foods, small amounts of animal proteins, lots of vegetables. I'm age 60.