Scurvy: certain foods have vitamin C. THere’s a “C” icon on foods that indicates major/minor amounts of C. The Thomson Stew is shown with “Major”. Long-term effects are “tough to deal with”, the flavour text says “you will continue to weaken and lose condition until you succumb and die”. Raph says it’ll mostly effect long-term players and is enabled in voyager/stalker/interloper. Not currently disablable in custom games.

• Thomson Family Stew: major
• ranger stew: moderate
• canned corn: moderate
• coho salmon: major
• rabbit: none
• rainbow trout: major
• rockfish: none
• wolfmeat: none

So it may be a motivation to actually fish or at least beachcomb. A fish once in a while may be enough to get by sustainably.