Reading passage
For hundreds of millions of people, the day does not truly begin until the first cup of coffee. Market research suggests that coffee is the most widely consumed psychoactive substance in the world, and surveys in Europe and North America consistently find that a clear majority of adults drink it at breakfast. What began as a regional habit in the Horn of Africa has become a global morning ritual, repeated in kitchens, cafes and offices on every continent.
The story of coffee starts, according to legend, with an Ethiopian goat herder named Kaldi, who noticed that his goats became unusually energetic after eating the red berries of a certain shrub. Monks at a nearby monastery supposedly used the berries to stay awake during long night prayers. Whatever the truth of the tale, it is certain that by the fifteenth century coffee was being cultivated in Yemen, where Sufi monks brewed it to sustain their ceremonies, and from there it spread through the Arab world.
Coffee reached Europe in the seventeenth century and quickly transformed social life. In London, coffee houses charged a penny for admission and became known as penny universities, because customers could debate politics, science and trade for the price of a cup. Coffee also changed the breakfast table: in many northern European cities it gradually replaced the traditional morning soup of beer and bread, a shift that some historians credit with making workers more sober and punctual. The new drink was not welcomed everywhere at first. Some religious authorities viewed coffee houses as places of gossip and political complaint, and a few rulers tried to close them, though the bans rarely lasted long. By the early eighteenth century, however, coffee had become a normal part of city life from Venice to Vienna, and merchants were planting coffee in their colonies to supply the growing demand.
The chemistry behind the morning cup is now well understood. Caffeine works by blocking receptors for adenosine, a chemical that builds up in the brain during waking hours and produces the feeling of sleepiness. After drinking, caffeine reaches its highest level in the blood within about an hour, and its average half-life in the human body is between five and six hours, which explains why a late afternoon coffee can still disturb sleep at midnight.
Recently, some researchers have questioned whether the first cup should be drunk immediately after waking. The hormone cortisol, which naturally promotes alertness, peaks shortly after we get up, so a few scientists argue that coffee is better saved for mid-morning, when cortisol begins to fall. However, the evidence for this advice remains limited, and many experts believe that habit, comfort and personal rhythm matter more than precise timing.
Moderate coffee consumption appears to do more good than harm for most adults. Large population studies have linked three to four cups a day with a lower risk of type 2 diabetes and Parkinson's disease, and coffee is one of the biggest sources of antioxidants in the modern diet. Doctors do, however, advise pregnant women to limit their intake, and people with anxiety disorders may find that caffeine worsens their symptoms. Researchers also note that most studies show association rather than proof, since people who drink coffee often differ from non-drinkers in other habits. Even so, the overall evidence has led several health authorities to describe moderate coffee drinking as compatible with a healthy diet.
Coffee is also woven into working life. In Sweden, the daily coffee break is an institution known as fika, a pause in which colleagues gather over coffee and pastries, and many companies treat it as a protected part of the schedule. Similar customs exist elsewhere, from the espresso drunk standing at an Italian bar to the long cafe meetings of the Middle East, each turning a simple drink into an act of community.
The way people brew their morning coffee keeps evolving. Capsule machines and electric grinders have brought cafe-style drinks into ordinary homes, and home consumption rose sharply during the coronavirus pandemic, when cafes were closed. Whether the future belongs to high-tech machines or to the humble stovetop pot, the morning cup seems secure: a small, dependable ceremony with which millions of people choose to greet the day.