How does the drinking and eating system exactly work

[Leon]

Of course i know that eating and drinking raises it, but sometimes my hunger bar goes up super quickly (same for hydration) and other times it feels like nothing happends
and as a side note, how much should i be eating when sick so i dont puke it out?

[baddoggs]

You eat food and drink water... pretty simple really...


Seriously, you only puke if you are sick with food poisoning.
Just nibble a couple of bites every few min and small sips.
otherwise, you eat and drink until you are full.

[kolorotur]

if you have no shortage of food/water, then eat/drink until the arrows above the indicators disappear, making pauses when the stomach icon appears so that you don't overeat and throw up.
If food/water is scarce, eat to the level when the icons become filled, but not more beyond that: the more you're full, the faster the calories will burn away, so stuffing yourself is wasteful. Keeping it a few minutes of action above yellow is the most efficient.

When sick, a good rule of thumb is to stop after 5 seconds of eating and wait a minute or two.

[ast]

if your bar is pretty low already, you'll see it raising fast when eating or drinking.
the 'fuller' you get, the less you'll see the bar raising.

keep in mind that a completely filled icon doesn't mean you're maxed out...you're just full and can still stuff yourself (which you should do at every possible opportunity, never carry food with you, your body is the best container).

when sick, only eat and drink very small amounts at a time, but you'll have to do it very frequently to compensate the less calories (like sipping a coke in three gulps with a delay of a minute or so between each).

[Ciri Facial Elen Riannon]

If u eat and drink, you will get 3 arrows up. Sometimes your Apple/Bottle will change colors, BUT ONLY if you reach the next level of Stuffed or Hydrated.

From an empty red icon to a red icon with a little bar, OR to the yellow icon doesn't takes long, because the range between them isn't big. Here is a little help sheet: https://wobo.tools/asmondian/98174DayZTips6StatsAmounts.jpg
As you see, from white to FULL white takes way longer. And as you see, after the icon is already full, you can still eat drink more.

For the bottle example. If you reach a full white bottle, you have 2400 water. BUT you can still drink 2600 more. So u are basically just 48% filled with water (with a full icon). Same for health and energy.

Stuffed: eat and drink as much as u want untill u get the stomach symbol.
When sick: eat and drink like 1/8 from the food/water you have. An that every, lets say, 30 seconds. So u can get a full apple or bottle when u sick.

If you have at least a full Health, Blood, Apple and Bottle symbol. (Just a full symbol, not completely full like the Stat - Sheet shows you), u basically cant get sick.

[Kisamefishman]

it depends on what you eat like fruit and veggies will only fill you up very few min and other thing like mre will fill you up for longer. I'm not sure if you on official or community server but just think of it in real life how would it fill you up I know on dayz it unrealistic but thats the only way I can think to help you in a short answer.

[Evil_Pie]

eating food: when sick, just take a few bites and then keep doing your own thing, you can take much every minute or so.
small fruits and vegies dont give you much but its something. sealed food give you more.
dont eat Mystery canned goods or Unknown food (says it in the description when you click on it. IT WILL MAKE YOU SICK

ride out the sickness, take vitamins or try medicines.
running or heavy labor drains your system faster.