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← Human Body & HealthIf chronic stress decreases dopamine receptor D2 availability in the nucleus accumbens, which consequence follows regarding addiction?
A)Increased likelihood of reward response
B)Reduced sensitivity to natural rewards
C)Heightened vulnerability to substance abuse✓
D)Enhanced ability to resist cravings
💡 Explanation
A decrease in D2 receptor availability reduces the brain's capacity to experience pleasure from natural rewards. Because of this blunted reward system, individuals may seek stronger stimulation from addictive substances, therefore increasing the vulnerability to substance abuse, rather than maintaining resistance to cravings.
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