Coffee was once regarded with suspicion. Decades of research have changed that picture considerably.
The good news
Large observational studies associate moderate coffee drinking — roughly three to four cups a day — with lower risk of type 2 diabetes, liver disease, Parkinson’s disease, and death from any cause. Decaf shows similar associations for some outcomes, suggesting compounds other than caffeine play a role.
These are associations, not proof that coffee causes the benefits, but the consistency is reassuring.
Points to consider in midlife
- Hot flashes. Some women find caffeine triggers or worsens hot flashes; others notice no effect. Track your own response.
- Sleep. Caffeine can disrupt sleep for hours. A cutoff by early afternoon helps many people.
- Anxiety and palpitations. Caffeine can worsen both.
- Bone. High intakes have been linked to slightly increased calcium loss, which is offset by adequate calcium intake.
- Blood pressure. Caffeine causes a short-term rise; regular drinkers develop some tolerance.
How much
The FDA cites up to 400mg of caffeine a day — about four cups of brewed coffee — as generally safe for healthy adults. Pregnant women are usually advised to stay under 200mg.
What you add matters
Sugar-heavy coffee drinks can contain as much sugar as a dessert. Black coffee, or coffee with a splash of milk, keeps the potential benefits without the extras.