Would Majoring in Nutrition Turn Me Into a Health-Crazed Maniac?

I want to major in Nutrition and then either become a nutritionist, teach about nutrition and food science, or most likely go into PA (physicians assistant school).
I’m afraid that after a while of studying nutrition I’ll turn into my mom and start nagging people about their food choices every meal and stay committed to soy, tofu, and omega tablets.
Is this an unjustifiable fear? To be honest, I want to study nutrition because I like learning about how the body digests and makes use of vitamins and minerals. I find that part interesting. I don’t necessarily care to learn about fad diets or learn how to eat healthy because I always thought to eat plenty of veggies, fruits, and less heavily processed foods and that has always been fine for me, since our bodies can actually handle some occasional crap foods 1-2 times a day.
I just don’t want to become a slave to healthy eating. So would majoring in Nutrition be a bad idea then? Are there any Nutrition majors who don’t nag about healthy eating?

It might turn you into a very opinionated, not necessarily correct, person nobody wants to listen to. It’s remarkable how a lot of these nutritionist types have a fairly poor grasp of their field – BUT – they do seem to be filled with lots of opinions.

The trouble is, American food is really really scary horrible – and you do hate to watch kids ruin their lives on the fast food rubbish. I’m sure it would be hard for you to keep your mouth shut.

Still – it would be a great major – certainly an important major – a major major, you might say.