People with anorexia are at increased risk of death from?

The correct answer is all of the above.

Anorexia nervosa is a serious mental illness that can lead to death. People with anorexia often restrict their food intake and may also exercise excessively. This can lead to malnutrition, dehydration, and electrolyte imbalances. These complications can cause serious health problems, including heart failure, kidney failure, and respiratory failure. People with anorexia are also at risk of suicide.