To old to go for ND?

I just turned 40. I have been interested in the ND degree since I was 30 but I owned a home and a business and had no time to pursue it. In the past years my business tanked due to the economy and I sold my home.

Now I'm deciding what I'm going to do for the rest of my life. I can either go back into IT (which drained my soul) or pursue my lifelong passion of alternative medicine. I've been living and breathing naturopathy since I was a kid.

I have a couple years to finish my BA so I would be 43 when I started and around 48 when I finished.

Is this too old to start a career in the field?

The way the future looks I will probably be working until I'm 80 so I may as well do something I love.
On the other hand I have to think about survival.
I have some savings but would have to take loans also.

Any insights would be deeply appreciated.

Paul