To just take to the human body because of the lips for food digestion or absorption. See Synonyms at eat.
To take in and absorb as food: "Marine ciliates ... can be observed ... ingesting other single-celled creatures and harvesting their chloroplasts” ( Carol Kaesuk Yoon).
To simply take into, or as into, the tummy or alimentary canal.
To simply take into the human body at all, as by inhalation, shot, absorption, plus through lips.
How would you define ingest?