Will vault dwellers heal over time?

I'm recovering from a serious rad-roach infestation. All my surviving dwellers are injured and/or have serious radiation poisoning (red bar).
Do I have to heal every dweller, or (assuming I have sufficient water/food) will they heal themselves over time? Does radiation poisoning go away by itself too?
Best Answer
Yes, they will recover but it will be very slow and if you have an irradiation higher than 50% or same amount of lost health points, it's not really worth to wait. They will quickly become very unhappy and it's gonna be harder to get back 50, 60 people to 100% happiness (or close). Start creating stampacks and radaways and slowly heal everyone, starting with the most affected ones of course.
What I usually do after something like this, I use a cycle of 1 radaway to each affected dweller (until all the radaway are gone), even though that doesn't completely heal them but stops the rapid happiness decline.
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Do dwellers auto heal?
And yes they heal over time on their own. Using stimpack heals them faster. Assigning dweller to medbay will make him produce stimpacks.Do dwellers heal themselves while exploring?
Overview. Stimpaks can be used directly on dwellers inside your Vault to increase their health and happiness as a result. Stimpaks can also be issued to dwellers out exploring, allowing them to heal themselves and explore for longer.How do you heal an injured dweller in Fallout Shelter?
In order to heal the dweller either a stimpak must be used, the dweller must level up, or they can recover slowly if they have plenty of food. RadAway can be given to vault dwellers when they adventure out in to the wasteland, and it will automatically be used when they take too much radiation damage.How long should you leave dweller in the wasteland Fallout Shelter?
My longest runs so far are around 36 hours of exploration and 18 hours return trip. The low level luck people I used to send out would still bring back rusty whatever guns and BB guns even towards the end of their trips. They did some times come back with a nice rifle or the like but that was rare.How dare you kill Vault Dwellers!!!!!
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Answer 2
I just suffered a feral ghoul attack. Hitting my top-floor Dining Area, my mid-high level dwellers suffered approximately 20% health loss and 10% rad poisoning. I used no stims and no radaway, and they self-healed within about ten minutes. High endurance dwellers appeared to heal faster.
Answer 3
They do not heal over time if they are working in a room, but they seem to heal quickly if they are on coffee break. Once you get to more than 70 dwellers you can expect almost constant deathclaw attacks so it doesn't matter anyway. You will need at least three fully upgraded and staffed medbays to produce enough stimpacks.
Answer 4
Actually they don't heal one bit & over time, instead they max out the health of any dweller that levels up.
As for radiation, only Radaway gets rid of it, so you will have to produce them.
If the dwellers health is so low as to not be able to withstand the next attack before they level up then I would suggest healing via Stimpacks.
Answer 5
You can fully heal them by using Radaway and Stimpak but use both of them so it can heal completely
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