I saw something about whether the rh- factor, which only 10-15% of the population has, might provide slightly more immunity from covid and the flu but it really wasn’t well researched.

Everything credible is reporting that probably the number one risk factor for a negative covid outcome is obesity. But msm is essentially burying those studies.

I see something about the rh- factor and immune systems but it wasn’t well documented.

I think one of the major risk factors that is hardly ever discussed is obesity.