Wow, fascinating. I had no idea these hypernuclei even existed!
Interesting background read: https://en.m.wikipedia.org/wiki/Hypernucleus
Interesting background read: https://en.m.wikipedia.org/wiki/Hypernucleus
Well, I suppose, radioactive decay is of negative use in chemistry and engineering.
Also, heavy water is typically slightly radioactive due to it usually containing tritiated water (T2O), though regular water can also contain that.
Apparently, swapping 20% of your cells' water with heavy water is survivable, but if you try this, don't blame me if you go sterile (cell mitosis will likely be affected).