If you have enough ferromagnetic material in your blood that you can be lifted fully off the ground, then maybe you have bigger things to worry about.

Risk assessment according to dose is:

<20mg/kg –– asymptomatic

20-60mg/kg –– GI symptoms only

60-120mg/kg –– potential for systemic toxicity

>120mg/kg –– potentially lethal

https://litfl.com/iron-overdose/