My son has eczema and food allergies and I did a lot of research on actions we could take to help prevent the so called "atopic march" to hay fever and asthma. There's a lot of woo-woo stuff out there that I think can be safely ignored, but I did find what I consider strong evidence that families that hand wash their dishes have significantly lower incidence of some allergic symptoms. I thought it sounded weird and I didn't know what the mechanism could be but the evidence looked so strong that we stopped using our dishwasher. I guess this is one potential mechanism.
Gas stoves and ovens are the other thing we stopped using, with good justification I think.
Gas stoves and ovens are the other thing we stopped using, with good justification I think.