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'''Juvenats'''{{Fn|1a}}{{Fn|1c}}{{Fn|2}}, rarely named '''Rejuvenats'''{{Fn|1b}} - any of a number of anti-ageing treatment used by the [[Imperium]] for the extension of [[human]] life, maintained primarily through the use of juvenat-drugs but supplemented with augmetic surgery to maintain the youthful look.{{Fn|1a}} Among the wealthy of the Imperial society it extends the lifespan to the point when being just shy of two centuries old is considered an early middle-age,{{Fn|1c}} making it hard to distinguish a difference in human appearance in a range between 40 and 400.{{Fn|1c2a}}

The treatment is known to be able to replenish the entirety of a damaged body, for example if utterly annihilated in an accident, if at least the brain is intact. Although it is noted that the recovery from such a state takes something between 2 and 3 [[terra]]n years (9 [[fenris]]ian months).{{Fn|23}}

Among the cheapest and more widely available treatments, there are known practices of: plumping flesh with collagenics; filling creases and wrinkles with dermics, cleaning of eyes and organs, applying a skinweave that pins up the skin folds, resculpting of bones or permanent staining of a skin a tanned colour with nanotic pigments considered in the Imperium as presenting as a mark of health.{{Fn|23}} Multiple treatments on low budget can live visible deviance from a natural youth, with overly tight flesh and skin too smooth and too monotone.{{Fn|2a}}

On the other hand, to the wealthiest there is an availability of gene therapies, skeleto-muscular grafts, implants, skin underweaves, transfixes, and stem-splices. The extreme juvenat treatment can replace the entirety of the body of a subject wtih mineral bonding and bone grafts to reconstitute a new skeleton, resleeved in a musculature gene-copied from the subject's code, reinforced with [[plastek]] weaves and polymers, with all organs replaced with similarly gene-copied transplants. Those individuals were known to indisputably maintain their prime appearance, sometimes even considered looking better than when they were the age they appear now.{{Fn|23}} People with less than the best access to juvenats are known to be able to present truly youthful, or at least not monstrously caricaturesque, if beyond the simple reliance on this technology they maintain a healthy lifestyle, which might be causative to the scarcity of such an effect.{{Fn|4}}

Even with access to the treatment, some people keep parts of their aged self, like gray hair or slight droop to the cheeks.{{Fn|5}} Some more spineless individuals are viewed by less privileged to purposefully alter their appearance for the aim of obfuscating their innate slimy expressions with those considered approachable, though it's a matter of conjecture.{{Fn|2a}} Some treatments are known to work even on [[xenos]] like the [[T'au]].{{Fn|36}}. While they are effective at greatly expanding one's life, they ultimately fail to prevent eventual death.{{Fn|47}}{{Fn|Dubious wording}}

*{{Endn|2}}: [[Ravenor (Omnibus)]] - [[Playing Patience (Short Story)]]*{{Endn|3}}: [[Prospero Burns (Novel)]], Part One, Chapter Four*{{Endn|34}}: [[Ravenor (Novel)]] Part One, Chapter Five*{{Endn|5}}: [[Atlas Infernal (Novel)]], Interregna I*{{Endn|6}}: [[Fire Caste (Novel)]], Chapter Eight, Chapter Sixteen*{{Endn|47}}: [[Belisarius Cawl: The Great Work (Novel)]] - Chapter 1