comparing health reasons to ease of use a vaporizer is the best method to ingest this plant.
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I've been using the classic eterra for 3 years and am very happy with it. Another benefit of vaporizers is they are much more efficient. Think of weed as a rope (plant) dipped in honey (thc). When you vaporize the rope, you boil off the honey, leaving the rope intact. When you use a direct flame, you are getting some of the honey, but also the useless (and harmful!) plant material.
An easy way to vaporize is with a magnifying glass...