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

That’s pretty rare in humans, but I can think of one example–[Abby and Brittany Hensel](https://en.wikipedia.org/wiki/Abby_and_Brittany_Hensel). They are one of only four known sets of “two headed” twins to survive to adulthood and the only set to not suffer from heart issues and other serious problems. They were elementary teachers last I heard, but I can’t find any more recently information.

I couldn’t find any specific information about your questions, but they did have a reality show for a while and there’s loads of information about them, so you might be able to figure it out with some research. At the least, if you can find a way to watch it, you should find their reality show enlightening.