The city I used to live in, the only major program the college had was Nursing, and that was supported by the only AP course in the high school, AP Biology. I wouldn't necessarily say it's dominated by women, but it has the same "yuck" factor as trash collection, or heat and sparks from welding. Nurses are often exposed to toxic chemicals and all manner of infections diseases. That's something that calls for someone who can follow directions without error, and if you are someone who thinks instructions and rules should be ignored, you're shown the door, since that will lead to someones death.
Everyone is capable of having those interests. But those interests have to be nurtured by parents and teachers and a seen application of them. If your parents are doctors and engineers, you might get flack for being interested in the arts and keep it to yourself at first sign of disapproval. On the other hand, if your parents or grandparents didn't have a high school education, you might not place a great value on their approval or disapproval.
What it comes down to is why those interests aren't greater. If the aim is gender parity in all fields, that simply is not going to be a thing. An example with the Janitorial and Garbage Pickup services... those jobs are often viewed as disgusting, but they pay really well for relatively not that much work. Janitorial work doesn't require a degree, but requires reading MSDS and knowing what a lot of words are if you have to clean up a site that deals with chemical or biological hazards, like a medical clinic. So why is the Janitorial job the one that's looked down on?
Anyway some of you are nitpicking this. There is no biological directive for men or women to be interested in anything. It's all cultural for the most part. "Women"'s culture and "Men"'s culture in North America is not uniformly the same, and because there's such an enforcement of gender barriers in everything from childrens toys to religious services, Women often feel like they are supposed to pay second fiddle to men, when they absolutely don't have to.
The middle school and the first two years of high school had something like this. Everyone was rotated through metalwork, woodwork, cooking, and textiles in grade 8. Those were the classes kids wound up skipping and faced no consequences for. Grade 9 and 10 we actually had to pick which "shop" classes out of a very short list, and if the class you wanted didn't have enough students you got dumped into whichever class there was still a teacher for.