Which condition leads to impaired fat absorption?

• A. Bile acid deficiency
• B. Iron overload
• C. Vitamin C deficiency
• D. Protein deficiency

Answer: (A)

Emulsification and micelle formation by bile acids are essential for fat absorption. Bile acids break large fat droplets into tiny droplets and form micelles that transport fatty acids and fat-soluble vitamins to the intestinal lining for uptake. If bile acids are deficient, fats aren’t emulsified well, lipase can’t access triglycerides effectively, and micelles don’t form properly, leading to impaired fat absorption and steatorrhea.

Iron overload doesn’t directly disrupt the fat absorption process, as it mainly affects iron metabolism and related tissues rather than the fat-digesting/emulsifying steps. Vitamin C deficiency and protein deficiency don’t specifically impair fat absorption in the same way; they affect other bodily functions, whereas the critical bottleneck for fat uptake is the presence of bile acids.