Dude if when you get hunted or fished meat and it has lead in it, take it back and get a refund. Bullet fragmentation is a well known factor and if someone is losing enough fishing weights that its increasing lead exposure they need to stop fishing.

These are probably some of the lowest on the totem factors ya could bring up which is rather impressive since fishing and hunting may have an effect, problem is that said effect is cultural. People have been hunting with lead projectiles since the fucking bronze age if not earlier, you can handle lead perfectly safely, just dont lick it, aerosolize it, smelt it, or fucking drink it and you should be fine.

Fuck if you said mercury poisoning from eating too much fish was a factor you may have been fucken onto something.