Vitamin B12 is essential for energy, red blood cells, and nerve health—but no common fruit contains it. Despite online claims, apples, bananas, and berries have zero B12. Real sources include fish, meat, eggs, dairy, and fortified foods like cereals and plant-based milk. Vegans may need supplements or B12 shots for proper levels. Fruits support overall wellness, but they cannot meet your vitamin B12 needs.