Are needs decaying faster after your sim learns magic?

Well that makes sense for practicing magic. But for learning magic, I guess it does take a time when Studying a Tome of Magic.
I noticed when my sims were doing extensive spell casting their energy depleted rather Quickly, which I really love. Magic is a form of energy, and should feed off of the Sims Energy Gauge rather than some Magic Meter, or whatever. It's just you ought to be careful about how you use your magic. I think, Not 100% sure still trying to study it, but I think, if you have a good Charge then you Energy needs won't be touched as much, but don't over do it. Magic indeed comes with a price... dearie.

I’ve noticed all my Sims needs dropping much quicker after learning magic, maybe that’s why the potion to refill needs is so easy to make??

Thank you both for answering.

I can't say that I have noticed.. they need to eat one or two times a day like before and make it through the day before needing to sleep. Now I don't usually play my witches overcharged or in danger zones... and some days they just do their normal stuff.. job ect and use little magic.
I'll try to pay more attention I guess. Sometimes when magic fails their needs drop to half way or other needs tank, but that makes sense to me.
I'll try to pay more attention .. maybe some tweaks were made overall. I doubt just spellcasters are having issues with daily needs.

I run a very strict ship with all my Sims, and hunger, bladder, social and hygeine are all normal. Fun depletes while they are 'practicing magic' or experimenting with potions, but that's because they apparently think those actions are boring.

I do think sleep is decaying a bit faster - both my Sims have the 'seldom weary' trait and a good bed (not the one from RoM, which is gorgeous and useless because it's a 5), and should be fully rested on three hours of sleep. They seem to need about four hours, however.

I can't say that I've noticed any difference.

Ohh... that is interesting.

I quite like it, you can have great power but your needs drop faster when you do use magic. Then the “apple a day”-potion feels more ok. The spellcasters become a tiny bit less OP.

I haven't noticed that much, though the potion of "plentiful needs" is it? Does come in handy with these sims. Finally a way to fulfill the needs of sims without cheats! And umm.. I did notice that if sims spend lots of time practicing magic, then that can give that illusion since time seems to fly, and the sages I've noticed their needs don't seem to decay. Not sure if anyone else noticed that though!

My sim had the seldom weary and hardly hungry traits, she was sleeping and eating more than she normally does with those traits. She was a little bit charged but not much.

I started a new game with a spell caster I made in CAS and her needs don't seem to drain as fast. She doesn't have the bought traits since she's a new sim.

I have a non-magic using Sim and I am not quite sure how to get her to become a magic user. Any suggestions?