Lost power is a condition in which an advanced humans is unable to use his/her powers. Lost power can be temporary or permanent, and caused by a number of means. Known ways of causing this condition include drugs, the effects of certain evolved human powers, Shanti Virus, or rarely through Solar eclipse. An evolved human's self-confidence, or rather lack thereof, can also affect power performance.
Most evolved humans lost the use of their power when near The Haitian. This power lost only temporary, as the use of powers returns when The Haitian leaves or is incapacitated. There have been examples of abilities The Haitian's presence, such as when Nathan flew away (Hiros), or when The Haitian had to use thermal imaging goggles to see Peter and Claude who were both invisible, despite being just a few feet away from the Haitian (Unexpected), but it is unknown if it was due to the abilities not being affected by his power or the Haitian simply not exerting it in those instances.
For a full list of powers that have been blocked by the Haitian's ability, see Mind Manipulation article.
Arthur Petrelli has shown that he can steal the abilities of other evolved humans, rendering them powerless. The absorption itself does not kill the victim, as is the case with Linda Tavara's ability. Arthur is known to have stolen the following powers:
- Telepathy from an unknown source and Peter Petrelli (Dying of the Light)
- Rapid cell regeneration from Adam Monroe and Peter Petrelli (Dying of the Light)
- Electric manipulation from Peter Petrelli (Dying of the Light)
- Telekinesis from Peter Petrelli (Dying of the Light)
- Plague secretion from Maya Herrera (Eris Quod Sum)
- Mind Manipulation from an unknown source (Villains)
- Space-time manipulation from Peter Petrelli (It's Coming) and Hiro Nakamura (Our Father)
- Precognition from Peter Petrelli (It's Coming)
According to Arthur, the effects of power absorption are permanent. He can remove an ability which he already possesses, as in the case of Peter's rapid cell regeneration and [[Telepathy|telepathy], and Hiro's space-time manipulation.
An ability stolen by Arthur can be, at first partially and later fully restored by Matt Parkman, Jr.'s ability, as seen with Hiro Nakamura. After being touched by Matt Parkman Jr., Hiro was able to access the time-stopping part of his original ability. This seems to indicate that Arthur's power to steal an ability does not damage the victim's DNA, but rather inactivates the portion of DNA in question. Hiro has also regained his ability, though it took a long time to regain full control over it due to a brain tumor he developed. Although Arthur initially said it was impossible for Peter to regain his powers, during their final confrontation, he indicated that he believed that the formula could restore them. However, when Peter did inject himself with the formula, he ended up with a different, though similar, power.