When it comes to the effect of coffee on a health, some studies have linked consumption

to heart risk factors such as raised cholesterol or blood pressure.

They found that those who drank six or more cups of coffee a day had a 22 percent higher

risk of developing a cardiovascular disease.

After 25 cups of coffee a day had no ill effects on your arteries.

A day out of Australia found that two to three cups of coffee a day is not only associated

with a lower risk of heart disease and dangerous heart rhythms, but also with living longer.

It seems as if every year there's a new study on whether coffee is good or bad for you.

You've probably seen other contradictory reports on how vitamins or water consumption or salt

or sugar affect some other health outcome you care about.

So why is it that we see so many conflicting reports in the media?

Why is it so difficult to determine whether something like coffee is good or bad for, say,

your heart?

It has a lot to do with the challenge of separating out all the factors that influence

our health.

Things like age, weight, height, genetics, mindset, sleep patterns, stress, exercise, and,

well, you get the idea.

Health is the sum of many things, and coffee is just one small piece of a much larger puzzle.

Teasing out its influence is no easy feat.

In this episode, we'll dig into a tool for tackling a common mistake that affects how

we think about everything from coffee to medicine to education.

You'll hear a colorful story from history that illustrates how this tool works, and

...