Lots of exclusion zone water (EZ water) from clean veggie green juice (especially cucumber), coconut water, etc

Lots of infrared light from the sun or one of the plug in devices. Sauna, barefoot grounding, low sugar/carb diet or even water fasting if they're overweight. Bioavailable minerals in humic/fulvic form. Remove any environmental toxins.

Most importantly belief in the strength of their body to come back into healthy homeostasis

Prayers to both of you 🙏