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[Fullmetal Alchemist] [spoilers] Could Ed learn alkahestry?

At the end of the manga/Brotherhood, Ed gives up his ability to use alchemy. Does this prevent him from using alkahestry as well, or could he theoretically learn it?
gpt
Alkahestry differs from alchemy in that they use different power sources, the former 'the chi flowing trough the earth' ^((whatever that is supposed to mean)^) and the latter the tectonic shift as well as the power of the Homunkulus' philosophers stone.

They still get channeled the same way, through the gate of the respective practitioner, and so Ed probably can not do it.