How Many Calories Are In Uranium

Ever wondered, “How many calories are in uranium?” While the idea might sound bizarre, it has captured the curiosity of many due to uranium’s sheer energy density. Surprisingly, uranium, particularly Uranium-235, doesn’t contain calories in the conventional sense like food does. Calories are a measure of energy obtained from metabolizing macronutrients (carbs, protein, and fat), but uranium’s energy release is nuclear. Specifically, 1 gram of uranium-235 can release about 20 billion calories worth of energy during fission! However, this isn’t “edible” energy—uranium is highly toxic and not compatible with human biology.

So, why does this question keep popping up? It’s a fun thought experiment to compare the energy stored in nuclear materials versus more relatable energy sources like food. Nevertheless, it’s essential to focus on consuming your calories safely and healthfully through balanced meals.

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