From more in the subject, check out:
Nurses’ lifestyle behaviours, health priorities and barriers to living a healthy lifestyle: a qualitative descriptive study @ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4264254/__ffn_sectitle
Nurses’ lifestyle behaviours, health priorities and barriers to living a healthy lifestyle @ https://www.researchgate.net/publication/269715327_Nurses'_lifestyle_behaviours_health_priorities_and_barriers_to_living_a_healthy_lifestyle
Life becomes somewhat difficult to manage at first too, balancing everything gets difficult, but you adjust with it. And if you don't you figure out what fields you are actually cut out for, the work load you can or want to handle to adjust your life, and you have the options to do so.
This was my personal experience. Everybody has different opinions, you just have to go through with it to figure out how it affects your ownself.
I hope this gives you some perspective.
I am a medical student with 2 more years left in medical school. Although it is very busy at times, I always make sure there is enough time for myself. I have a boyfriend of 9 years, and we make sure we have a date night at least once a week. I think the most important way to balance both is being organized. If I schedule in a two hour dinner slot in my schedule, I know I will get my studying done before that time. Being organized and planning your study schedule is very helpful.
Best of luck.