A client is wondering about the genetic factors that contribute to depression. What is the relationship between genetic factors and depression according to the text?
Depression is solely caused by genetic factors, with no influence from environmental factors.
Genetic factors play a minor role in depression, with environmental factors being the primary cause.
Genetic theory suggests that specific genes are responsible for causing depression, independent of environmental factors.
Genetic factors make some individuals more vulnerable to developing depression, but environmental factors also play a significant role in its expression.
The Correct Answer is D
Choice A rationale:
Depression is not solely caused by genetic factors. While genetics do play a role in predisposing individuals to depression, it's a complex interplay between genetic susceptibility and environmental influences that contribute to the development of the disorder.
Choice B rationale:
Genetic factors are not minor players in depression. Research suggests that genetics can significantly influence a person's susceptibility to depression. However, environmental factors, such as trauma, stress, and life experiences, also contribute substantially to the onset and course of depression.
Choice C rationale:
The relationship between genetics and depression is not as straightforward as specific genes causing depression independently of environmental factors. Depression is a multifactorial disorder influenced by a combination of genetic, biological, psychological, and environmental factors.
Choice D rationale:
This is the correct answer. Genetic factors do contribute to an individual's vulnerability to depression. Studies of families, twins, and heritability have demonstrated a genetic component to depression. However, it's crucial to recognize that genetic predisposition interacts with environmental factors. Trauma, loss, chronic stress, and other environmental triggers can precipitate depressive episodes in genetically susceptible individuals.
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Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The correct answer is choicea. MDD is more prevalent in older adults.
Choice A rationale:
Major depressive disorder (MDD) is indeed more prevalent in older adults.This demographic often faces unique stressors such as chronic illness, loss of loved ones, and social isolation, which can contribute to higher rates of depression.
Choice B rationale:
MDD is not primarily caused by a single factor.It is a complex disorder with multiple contributing factors, including genetics, brain chemistry, environmental influences, and psychological factors.
Choice C rationale:
Anhedonia refers to the loss of interest or pleasure in activities that were once enjoyable, not excessive sleeping.Excessive sleeping is known as hypersomnia.
Choice D rationale:
MDD cannot be diagnosed if only one symptom is present.The diagnosis requires the presence of multiple symptoms, including depressed mood or anhedonia, for at least two weeks.
Correct Answer is C
Explanation
Choice A rationale:
Chronic stress is known to activate the Hypothalamic-Pituitary-Adrenal (HPA) axis, which leads to increased cortisol production. While cortisol is important for various physiological functions, chronic elevation of cortisol due to stress can actually have detrimental effects on the brain. Elevated cortisol levels have been associated with impaired neurogenesis (the formation of new neurons) and synaptic plasticity (the ability of synapses to change and adapt), both of which play crucial roles in maintaining cognitive function and mental health.
Choice B rationale:
This statement is not accurate. Chronic stress typically leads to hyperactivity, not hypoactivity, of the HPA axis, resulting in increased levels of cortisol. The increased cortisol levels can negatively impact neurogenesis and synaptic plasticity, which are key factors in depression and cognitive function.
Choice C rationale:
This is the correct statement. Chronic stress triggers hyperactivity of the HPA axis, causing elevated levels of cortisol. While cortisol is meant to help the body cope with stress in the short term, chronic elevation can lead to adverse effects on the brain. High cortisol levels have been linked to impaired neurogenesis and synaptic plasticity, contributing to the development of depression and cognitive deficits.
Choice D rationale:
This statement is not accurate. Chronic stress tends to lead to hyperactivity of the HPA axis and elevated cortisol levels. Reduced cortisol levels, as suggested in this choice, are not commonly associated with chronic stress and its impact on depression.
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