Louis’ States of undress

Here’s Louis Theroux getting a bit naked for a spot of sensual eating in his new BBC2 series, Altered States.

The three-parter kicks off on Sunday, with an examination of polyamorous relationships in Portland, Oregon, in which people live in throuples rather than couples but never get jealous or resentful (yeah, right). To explore this, he attends the sensual-eating event.

Later programmes look at the private adoption business and assisted death for the terminally ill.