Spot on @crisatl as radiation is a gift that keeps on giving unfortunately.

I am 16ys out from my tonsil cancer (2008) where I had 35 rounds of radiation which amounted to 70 Gy and 3 rounds of the platinum-based chemo Cisplatin. I had other issues come up along the way. So be very aware of what is going on inside your mouth and throat. To name a few off the top of my head, it destroyed my thyroid giving me Hypothyroidism (makes you feel fatigued and most of the time you gain weight too) so now I have to take a pill for it for the rest of my life. Watch your bone structure and tooth decay in that region too- so make sure you go to your dentist every six months. Paralyzed one of my vocal cords so my voice is not as loud as it once was. And most recently likely was my cause of getting tongue cancer this year.

I also attached a couple articles around the long-term side effects for head & neck survivors.

Best Rob