Which risk increases as antidiuretic hormone (ADH) rises in the distal convoluted tubule of a renal nephron?

💡 Explanation

Increased ADH triggers aquaporin insertion into the collecting duct, thus increasing water reabsorption. Because water is reabsorbed without solutes, this leads to hyponatremia. Therefore, hyponatremia risk increases, rather than causing changes to potassium, urea, or sodium handling directly.

• Why does transdermal drug delivery exhibit variable efficacy between individuals related to skin barrier function?
• During prolonged caloric restriction, what causes an individual to experience increased hunger despite elevated circulating levels of Peptide YY (PYY)?
• Why does sustained close-up work induce eye strain, involving ciliary muscle fatigue, more readily in a dimly lit room versus a brightly lit one?
• If the radius of a blood vessel decreases by half due to vasoconstriction, which consequence follows regarding blood flow, assuming constant pressure gradient and blood viscosity?
• Why does a Vitamin D deficiency increase fracture risk during falls?
• Why does a rapid ascent to high altitude impair oxygen delivery to tissues, even when minute ventilation increases significantly?