Which organ does hepatitis B virus primarily target?

The hepatitis B virus primarily targets the liver, which is the correct answer. This virus is known for its strong affinity for liver cells, leading to inflammation and damage within this vital organ. Hepatitis B can cause a range of liver-related issues, from mild inflammation to severe liver diseases, including chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma, which is liver cancer. The liver plays a central role in metabolism, detoxification, and other important biological functions, making its health critical to overall well-being.

The other organs listed—kidneys, heart, and pancreas—are not significantly affected by the hepatitis B virus. While these organs can have their own set of diseases and viral infections, they do not have the same direct relationship with hepatitis B as the liver does.