Oxygen can and does dissolve in water and, I’m sure, also in blood – unless there’s too much. I would expect that the hemoglobin in the blood will take it in. like it dfoes in the longs, unless it’s saturated. Note the “weasel word” “unless.” I’m going by general knowledge, not specific expertise.

Decades ago I heard about vitamin B17/Laetrile, which is found in many seeds, including almond. Also aprocot and apple seeds, but not orange. It is supposedly a good preventative for cancer. If you actually have cancer it probably takes bigger does, given intraveniously. One thought I had is that a seed contains all the nutrients a young plant needs, so it probably contains many nuitients that we need. Likewise eggs. Maybe also pollen, although it’s n ot a complete seed.

Seems like you bleached your hair from the inside John! (just a joke).
I can’t answer any of your questions, I’m afraid. I just don’t know the answers.
Are you against dye to keep your hair a darker grey? (you don’t have to go back to black or brown).
Long term, I know certain nutrients, selenium, chromium and coQ10 were effective at darkening my hair.

If it were me, I would not inhale more than 0.5% hydrogen peroxide.

Being a cowboy, instead of a doctor, I can mention what I would do with a nebulizer for lung cancer. I would personally get an ultrasonic nebulizer. I would nebulize the silver supplement Argentyn 23. I would slowly work up to 10 minutes twice a day. I would start with just 1 single breath the first day for safety, and increase from there. Silver has quite a bit of evidence for using it with cancer.

Dear Gene,
You are asking me (indirectly) for a consultation here.
It’s not allowed by law and would put me very much at risk.
I can tell you this: I do not like to give even suggestions to cancer patients, unless they ask personally.
I long ago gave up the folly! Otherwise I tell you, you tell them, but then the patient is not interested 🙂
It happens.
Prof.