Sebum secretion decreases with age; which failure mode becomes more probable because of this change?

💡 Explanation

Decreased sebum reduces the skin's protective lipid barrier, which normally inhibits bacterial and fungal growth. Therefore, reduced sebum increases susceptibility to skin infections, rather than altering melanin, collagen, or keratinocyte behavior directly, because the antimicrobial barrier weakens.

• Which acute outcome occurs when joint effusions limit synovial fluid lubrication?
• Which mechanism explains why some individuals with long-standing hypertension exhibit a blunted heart rate response to sudden drops in blood pressure upon standing?
• Why does administering a selective COX-2 inhibitor after cardiac surgery increase the risk of delayed sternal closure?
• If a patient develops chronic hypoxemia due to advanced COPD, which compensatory mechanism involving 2,3-BPG (2,3-bisphosphoglycerate) helps to maintain adequate tissue oxygen delivery despite reduced arterial oxygen saturation?
• If a drug prevents reuptake of neurotransmitters at inhibitory synapses in the spinal cord, which consequence follows?
• Why does cue-induced craving persist in recovering opioid users despite prolonged abstinence and reduced dopamine responsiveness to the drug itself?