Noni Juice

My cousin bought him 4 bottles of these.
Not a product endorsement though. i am merely showing what he brought. Thanks cousin!

and because cousin spent a good 10min on a noni sales talk, dad had a lot of faith in this, and he is diligently taking it on a daily basis.

Let me append a paragraph from Neil Solomin, MD, PhD (John Hopkins Clinically trained physician)'s writings on Noni:-

Noni’s Miraculous Health Benefits

Research indicates that Noni stimulates the immune system, regulating cell function and cellular regeneration of damaged cells. The fact that Noni seems to operate on the very basic and critical cellular level may explain why it's useful for a wide variety of conditions. Dr. Richard Dicks, a clinician from New Jersey, says, "We're beginning to realize that we must get back to basics with our bodies. What it boils down to is, either burn nutrients or burn your body. Noni saves our bodies by giving us the nutrients we need."Actually, Noni has over a hundred primary and secondary applications. This booklet will focus mainly on the primary uses. Noni is invaluable as a healing herb because of the following functions, which will all be discussed in more detail:

• Increases body energy.
• Alleviates pain.
• Acts as anti-inflammatory and anti-histaminic agent.
• Has antibacterial properties that can protect against digestive and heart damage.
• Works with melatonin and serotonin to help regulate sleep, temperature and mood cycles.
• Inhibits pre-cancer function and growth of cancer tumors.

to see good desired effect, u probably have to drink quite a bit each day. 120 ml each day or more.
You can read more here.

Does it help dad? Maybe. :) he is at present eating a lot of things. Synergistically, it must have helped.