What does 'silo' mean here?
Through this journey, I’ve realized that medicine is a vast field with many silos. When it comes to knowing how best to care for something as complex as the human body, let alone the brain, you have to break apart those silos. Everything is related in unimaginable ways, and connecting the dots requires a certain level of creative thinking. You will learn about these many relationships in this book. For example, I’ll share a method of fat burning so powerful some researchers have called it biochemical liposuction—and how it may be your brain’s best weapon against decay. Or how certain foods and physical exercises actually make your brain cells work more efficiently.

Question

Answer

The Oxford Learner's Dictionaries website is an excellent resource

silo - noun
https://www.oxfordlearnersdictionaries.com/definition/english/silo?q=silo

meaning 4
a system, process, department, etc. that operates separately or is thought of as separate from others

example
Some departments have become silos and no longer communicate regularly with one another.

Answer

A silo is a tower in which grain is stored. Nothing else is allowed inside, and the grain is not allowed outside.

In the context of your example, the meaning of silo is the same: it is a place where information typically does not come in or go out. The information stays in its place. Each specialization within the field of medicine is a separate "silo."

In this example, the author is stating that the "siloing" of information is a problem.

Answer

Thanks a lot~

Answer

In general, a silo is a reference to groups of people not speaking with each other.  For example, accountants not sharing knowledge with marketing departments.  Silo, in this context, refers to hyper-specialized knowledge in medicine.  In healthcare, there is a push for integrated or holistic care.