Question

chronic stress can create physical health issues, and also can increase the likelihood of addiction or anxiety by causing changes to what organ of the body?
lungs
heart
stomach
brain

Explanation:

Chronic stress can lead to physical health problems. It can also increase the likelihood of addiction or anxiety. This is because stress causes changes in the brain. The brain is responsible for emotions, decision - making, and responses to stress. Changes in the brain's structure and function (such as alterations in neurotransmitter systems and brain circuits) can contribute to addiction (by affecting reward pathways) and anxiety (by disrupting the regulation of fear and stress responses).

Answer:

brain