Dr. Rhonda Patrick

So I think the key takeaway here is that coffee, caffeinated or decaffeinated, acts as a prebiotic matrix.

It has fibers, melanoidins, and polyphenols that feed the gut ecosystem that in turn generate metabolites linked to lower inflammation, better cholesterol handling, and neuroprotection.

So the next time you're having your coffee, remember, you're not just stimulating your brain, you're actually feeding an entire microbial network in your gut that may be central to coffee's longevity signal.

There is an important nuance when it comes to coffee's health benefits, such as the cancer protective effects.

Brewing method does matter.

Most studies show clear cancer protection involved filtered coffee.

Boiled or unfiltered methods like the French press or espresso

allow oily compounds called diterpenes to enter our cup of coffee.

At higher consumption levels, these diterpenes have been associated with slightly elevated risk of certain cancers, such as pancreatic cancer and respiratory tract cancers.

So why does brewing method have such a profound impact on health outcomes?

It comes down to two key groups of coffee compounds.

On the one hand, coffee is rich in polyphenols.

These are powerful antioxidants that can lower dementia risk by as much as 50% and reduce DNA damage.

This is a critical precursor to cancer by around 23%.

On the other hand, coffee also contains these fat-soluble diterpenes.

If not filtered out, the diterpenes

can significantly raise LDL cholesterol by as much as 30 milligrams per deciliter within just a few weeks.

This elevates cardiovascular risk.

Regardless of one's perspective on LDL's role in cardiovascular disease, there is no reason coffee should be raising your LDL by this much.

So this is best avoided if possible.