For many people, coffee is not just a drink to boost energy, but a daily ritual. However, the way it is prepared can affect the health of the heart and blood vessels.
Norwegian scientists have been studying the effects of different coffee brewing methods on the cardiovascular system for 20 years. It turned out that drinking unfiltered coffee increases the risk of death from cardiovascular disease compared to filtered coffee.
The main secret is the paper filter. It traps cafestol, a natural substance that raises the level of “bad” cholesterol. Coffee brewed in a Turkish, French press or geyser coffee maker contains the full amount of cafestol. A drip coffee maker with a paper filter leaves it on the paper, letting through only the beneficial components.
Studies have shown that four cups of filtered coffee a day reduces the risk of cardiovascular disease by 15%. Replacing three cups of unfiltered coffee with filtered coffee three times a week can reduce cholesterol levels by 0.58 mmol/L.
As for espresso, it has higher levels of diterpenes, which also raise cholesterol. However, Italian studies have shown that espresso may slow the accumulation of toxic proteins associated with Alzheimer's disease. Caffeine in moderation (2–3 servings per day) protects neurons and reduces the risk of dementia, but excessive consumption can cause anxiety and insomnia.
Instant coffee is considered the least healthy. During production, most of the beneficial substances are destroyed, and acrylamide appears in the composition - a potentially dangerous compound. Artificial flavors are often added to improve the taste.
For maximum benefit, doctors recommend freshly roasted beans and a drip coffee maker with a paper filter.
