(Dr) Null's expertise on AIDS is in line with his quackery in other areas. This too from Null:

Magnetic therapy can help the body ward off such microbial invaders as viruses, bacteria, and fungi. It achieves this, in part, by increasing immune function through the oxygenation of white corpuscles, an important part of the immune system's arsenal. A magnetic field can also function like an antibiotic by lowering acid, with the result that microorganisms have a more difficult time surviving.

Sometimes, snake-oil salesmen can cost you a lot more than the $30 you blew on the Ionizer bracelet.