The Truth About Coffee: What the Research is Saying About Health Benefits & Risks

Coffee has sparked conflicting messages in the health world — is it a superfood or something to avoid? The truth is, it doesn’t have to be complicated. Based on current research, coffee can be an excellent addition to a healthy lifestyle—with a few important caveats, depending on your individual health and stress response.

Coffee: The Antioxidant Powerhouse

Coffee is actually the number one source of antioxidants in the American diet. These compounds help combat oxidative stress and support cellular health.      1, 2, 3

That said, coffee beans are one of the most heavily sprayed crops in the world, so it’s best to choose organic whenever possible to minimize exposure to pesticide residues. 

Coffee and Mycotoxins

Concerns about mold and mycotoxins in coffee are common. Fortunately, research shows that about 96% of mycotoxins are removed during the roasting process, and using a paper filter can eliminate an additional 20%. Most high-quality roasted and filtered coffees are quite low in mycotoxins.

Coffee and Cholesterol

Coffee naturally contains compounds called diterpenes, which can raise LDL cholesterol by up to 30% in some individuals.

However, the brewing method makes a big difference:

  • Unfiltered coffee (like espresso or French press) retains more diterpenes.     4
  • Filtered coffee (such as pour-over or drip) removes most of them, making it the better option for anyone with elevated cholesterol.     5

Coffee, Caffeine, and the Adrenal Connection

Caffeine works by blocking adenosine receptors, the brain chemical that signals fatigue, while also triggering the release of adrenaline, your body’s “fight-or-flight” hormone.    6, 7, 8

For those experiencing adrenal fatigue or high stress, this can contribute to:

  • Midday energy crashes    9
  • Brain fog
  • Jitteriness or anxiety    10

If you notice these symptoms, try these options:

  • Pair your coffee with 200 mg of L-theanine, an amino acid that helps calm the nervous system and reduce jitters.
  • Avoid coffee within 90 minutes of waking, allowing your natural cortisol rhythm to rise first.
  • Choose decaf if you’re sensitive to caffeine or have imbalanced cortisol levels. Be sure it’s Swiss Water processed, which uses pressure and water—not chemicals—to remove caffeine.

Coffee and Stomach Acidity

Coffee can temporarily change stomach acidity and relax the sphincter closing stomach contents, which may cause discomfort in those with reflux or sensitive digestion. Starting your morning with warm lemon water or ACV can help balance pH and stimulate healthy stomach acid production.

If acidity is an issue, look for low-acid coffee varieties, which are gentler on the digestive system.

Coffee and Exercise

While caffeine is often used as a pre-workout boost, research suggests it may reduce post-exercise recovery response. If recovery is your goal, you may benefit from consuming coffee after your workout instead of before.

Coffee and Longevity

Multiple large-scale studies have linked moderate coffee intake to improved longevity—with benefits for brain health, cardiovascular health, and metabolic function.    11

Consuming up to 300 mg of caffeine daily (roughly 2–3 cups of coffee) has been associated with a longer lifespan and reduced risk of chronic disease.        12

The Bottom Line

Coffee can absolutely be part of a healthy, balanced lifestyle—if chosen and consumed mindfully.

Key takeaways:

  • Choose organic coffee to avoid pesticide exposure.
  • Opt for filtered brewing methods (drip or pour-over) if cholesterol is a concern.
  • Wait at least 90 minutes after waking before your first cup, and avoid it before exercise if you struggle with recovery or energy crashes.
  • If choosing decaf, ensure it’s Swiss Water processed.
  • Adjust caffeine intake based on your adrenal health and tolerance.

If a simple daily habit like tweaking your coffee routine can add years to your life and boost how you feel each day, it’s worth paying attention to.