The work of Frank Hu, a professor of nutrition and epidemiology at the Harvard T.H. Chan School of Public Health, has been instrumental in shifting the public perception of coffee from a potentially harmful beverage to one that offers a range of health benefits.
Reduced Risk of Chronic Diseases
In a landmark study, Hu found that people who drank three to five cups of coffee a day had a 15% lower risk of developing type 2 diabetes compared to non-coffee drinkers. This protective effect is thought to be due to coffee’s ability to improve insulin sensitivity and regulate blood sugar levels.
Hu’s research has demonstrated that coffee consumption is linked to a reduced risk of neurodegenerative diseases like Alzheimer’s and Parkinson’s. And the anti-inflammatory properties of coffee may also play a role in protecting against cognitive decline.
Cardiovascular Health
The antioxidants in coffee are believed to improve blood vessel function and reduce inflammation. Hu’s research indicates that moderate coffee consumption (three to five cups per day) is not, as previously thought, associated with an increased risk of heart disease, stroke or premature death and may even have a small protective effect.
In summary, coffee is rich in antioxidants, which can reduce inflammation, it improves mental alertness and enhances the release of neurotransmitters like serotonin and dopamine, which are associated with mood regulation. However, as Hu emphasises, excessive consumption should be avoided due to potential side effects like insomnia or jitteriness.
Fun Facts
1. A coffee origin story of a 9th-century Ethiopian goat herder named Kaldi, seeing his goats becoming especially energetic after eating coffee fruits in Ethiopia.
2. The first webcam was invented at Cambridge University to allow faculty to see whether the coffee pot was empty before heading to the cafeteria.
3. The top 5 coffee-drinking countries in the world per capita are Finland, Norway, Iceland, Denmark and Sweden.
4. The longest-living cat on record, Crème Puff (38) had a diet that included coffee every day.
5. Caffeine is absorbed by the digestive system within 45 minutes, with effects peaking 15-20 minutes after consumption.
