From Brotato Wiki
Healing
In Brotato you can increase your Max HP
to increase the amount of damage you can take before you die. However, if you want want to survive the all the damage you take throughout a wave, you'll need sustainability rather than just more Max HP. This sustainability is found through healing.
For example you can take a tier II Max HP Upgrade to gain 6 Max HP, or a tier II HP Regeneration 
to gain 3 HP Regeneration. The 3 HP regeneration can heal you up to about 16 HP over the duration of a 60 seconds wave. This beats out 6 Max HP at long as you're not at full HP for the majority of the wave.
There are three main ways of healing, and several miscellaneous healing methods that can be found through items. The three main ways are HP Regeneration , Life Steal 
, and Consumables 
. Each way of healing have their upsides and weaknesses.
HP Regeneration
HP Regeneration is consistant and reliable. It always heals at a steady pace no matter the situation. But if things get tough, the healing stays the same.
Life Steal
Life Steal is cheap and scales with the intensity of battle. Life steal heals you when you hit enemies, so you get more healing with faster attacking weapons, and when there are more enemies to hit. However, while life steal is great in battle, it doesn't do much outside of it. If you aren't hitting enemies, you're not healing. This can be troublesome for melee builds especially if you're forced to run with low HP and can't stay in battle.
Consumables 
Consumables can be saved up for large bursts of healing. You can leave consumables on the ground until you need them. The downside is that consumables can be unreliable. Maybe you get unlucky and few consumables drop. Maybe the consumables dropped on the other side of the map and you can't get to them when you need to. You get more Consumables by increasing your Luck 
Stat.
Strategy
It can be useful to determine which healing methods you plan on using already early in the game. Since having negative HP Regeneration or Life Steal has no consequences for going below 0, choosing one of the stats to dump, allows you to buy powerful items which has negative HP regeneration or Life Steal as a downside.
However some characters
Life Steal is heavily dependant on your Attack Speed and a Weapon's cooldown. Weapons that attack quickly (such as 
SMG) will proc far more often than a slower weapon.
Vs. HP Regeneration
Compared to HP Regeneration:
- Life Steal can potentially offer much faster healing for less overall materials spent, compared to HP regeneration, by using weapons with fast cooldowns, Medical weapons, or a decent investment into Attack Speed.
- However, HP Regeneration is more reliable than Life Steal. It doesn't depend on your weapon speed, always procs, and it doesn't require you to hit anything. Especially melee users can get in trouble if they are put on low HP, and are forced to leave the melee range to flee. In this case, life steal stops healing you.
- Even with the diminishing returns of Life steal and hard limit of 10 HP per second, it is worth noting that it takes a lot HP regeneration to reach those numbers. So if you attack fast and can keep the Life Steal active throughout the fight, it is a powerful choice.
HP Regeneration
Life Steal
Life Steal is cheap and scales with the intensity of battle. Life steal heals you when you hit enemies, so you get more healing with faster attacking weapons, and when there are more enemies to hit. However, while life steal is great in battle, it doesn't do much outside of it. If you aren't hitting enemies, you're not healing. This can be troublesome for melee builds especially if you're forced to run with low HP and can't stay in battle.
Consumables
For consumables, you want to increase the amount of healing, which can be done by 
Lemonade, 
Weird Food, and 
Chopper
And you want to increase the amount of Consumables dropped, which can be done by increasing your Luck Stat.
If you're relying on consumables for your healing, you might consider increasing your Pickup range slightly with items such as 
Alien Tongue or 
Little Frog.
Secondary Healing Methods
Aside from the main methods of healing, there are several items that can allow you to heal by other means. Secondary Healing methods can be a nice addition to your other healing, and can be especially important for characters like 
Chunky, who can only make good use of Consumables otherwise, and 
Bull, who often is happy to take all the healing they can get.
Torture is Unique in that it replaces all your other forms of healing with a +4 per second. If you havn't invested in other forms of healing yet, torture can be a very powerful option.
| Name | Rarity | Effects | Base Price | Limit | Unlocked By |
|---|---|---|---|---|---|
| Tier 3 | +5 % Dodge 50% chance to heal 5 HP when dodging an attack |
60 | 1 | ||
| Tier 1 | +8% chance to heal 1 HP when picking up a material -1 Ranged Damage |
25 | 13 | ||
| Tier 2 | +3 % Crit Chance +20% chance to heal 1 HP when killing an enemy with a critical hit |
32 | 5 | Win a run with Lich | |
| Tier 4 | +15 Max HP Restore +4 HP per second. Cannot heal any other way. |
110 | 1 | ||
| Tier 2 | Spawns a medical turret that shoots projectiles healing 3 + (5% ) HP every 2.2s. |
40 |
Characters
These Characters Have mechanics that includes Healing
| Name | Stats | Unlocked By | Unlocks |
|---|---|---|---|
| Max HP modifications are increased by 25% +1% Damage for every 3 Max HP you have [+3] +3 HP recovered from consumables -100% Life Steal HP Regeneration modifications are reduced by 50% Dodge modifications are reduced by 50% Speed modifications are reduced by 100% |
Die for the first time | ||
| +30% Life Steal with Primitive weapons You start with 1 Stick You can't equip weapons above tier 2 |
Kill 10000 enemies | ||
| +12 Max HP +25% Life Steal You take 1 damage per second (does not give invulnerability time) -100 HP Regeneration |
Reach -5 % HP Regeneration | ||
| +200% Attack Speed with Medical weapons +5 HP Regeneration HP Regeneration is doubled +5 Harvesting -100% Attack Speed Armor modifications are reduced by 50% |
Heal 200 HP in one wave | ||
| +10 HP Regeneration +10 % Life Steal 100% chance to deal 10 ( ) damage to a random enemy when you healDamage modifications are reduced by 50% |
Reach +100 Max HP | ||
| +20 Max HP +15 HP Regeneration +10 Armor HP Regeneration modifications are increased by 50% You explode for 30 (300%  300% 300% ) damage when you take damageThis explosion has a 1.5x crit multiplier You can't equip weapons |
Win a run in Danger 1 | ||
| +5% Damage when you take damage until the end of the wave +10 Max HP +20 HP Regeneration +8 Armor -100% Damage |
Win a run in Danger 3 |
