If conjoined twins are born as a two-headed person, does that mean that have to consume twice as much food and drink twice as much water to supply two brains? Do they get more easily tired sharing the same organ systems and conservation of energy?

Question

If conjoined twins are born as a two-headed person, does that mean that have to consume twice as much food and drink twice as much water to supply two brains? Do they get more easily tired sharing the same organ systems and conservation of energy?

In: Biology

Answer 1

When speaking of a body with two heads and otherwise regular build, the necessary food intake would be higher compared to a body with only one head, but it wouldn’t be twice as high.

The organs would likely be accommodated to the slightly higher ‘workload’ they have to do to sustain the second head. So when given the necessary nutrients they shouldn’t tire more than normal.

Of course Only under the condition that there are no further anomalies in the body that would impact how well e.g. The organs work.