What are the advantages and disadvantages of being in human form?

In Dark Souls, what are the advantages and disadvantages of being in human form?

In Demon's Souls, being in human form gives you a clear HP advantage, but attacks have lower power and you can be invaded (if playing online).

In Dark Souls, however, the advantages and disadvantages are less clear. What are they?


Advantages of human form are that you can kindle camp fires and summon phantoms to aid you. These abilities are not available in Hollow form.

The only disadvantage is you're risking black phantom invasions.