Are there risks to creatine?
Not risks but sideeffects that might affect you. I just decided to cut creatine out during summer months, as I sweat significantly more when on creatine (and pee of course, but that is manageable). Now I already sweat more than average joe based on my genetics (yes, I had that checked out by a doctor) but on creatine it became really annoying during hot season. Since creatine definitely allows me to lift heavier and progress, I will just plan around that and put cutting/maintenance phases into the hot season off-creatine, and go back to supplementing it the rest of the year.
If you have kidney problems, it's very dangerous. My friend's son took creatine to build muscles, but got Berger disease. Be careful!
Anecdotally, it makes me feel like crap and significantly increased hair shedding. I've seen attestations of both side effects online as well. No idea how or why it could cause either, and the crumminess at least significantly improved very quickly after stopping it. Neither side effect seems to be especially common though.
Generally no, it's expensively studied and has had daily consumption to be safe for upto 5 years at least (studies haven't generally gone longer).
That being said some people do have adverse effects to supplementation, e.g. excessive water retention, bloating, stomach discomfort, &c.
So try it, if you have a bad reaction stop.
I get severe cramping from it (reproducible). All I can find are papers about this being a myth and some reddit threads about other people having this.
Essentially none. Creatine supplementation is a good idea for most people, especially vegans/vegetarians.
It can make you hold more water weight so you should drink more water in response.
Potentially lots poopies.
Excessively large doses make your stomach and perhaps your kidneys unhappy and supplements being lightly regulated there may be purity issues where the risk is what else is in it.
But it's pretty safe at recommended doses.
None
As it was mentioned elsewhere it might make existing cancers worse, and decrease survivability. Cancer seems to love it.
https://pubmed.ncbi.nlm.nih.gov/25601461/ https://doi.org/10.1016/j.cmet.2021.03.009
More accessible video: https://www.youtube.com/watch?v=tcMgHncZVIw