Which physiological responses are characteristic of the body’s attempt to return to a set point after weight loss?

Increased hunger signaling and reduced basal metabolic rate

Decreased ghrelin production and increased thyroxine secretion, both of which reduce appetite and accelerate metabolism

Permanent elevation of BMR with no change in hunger signals, making weight regain unlikely after loss

Loss of hypothalamic regulation entirely so caloric intake becomes random and unrelated to physiological signals