Green coffee beans are coffee seeds (beans) of Coffee fruits that have not been roasted. The roasting process of coffee beans reduces amounts of the chemical chlorogenic acid. Therefore, green coffee beans have a higher level of chlorogenic acid compared to regular, roasted coffee beans. Chlorogenic acid in green coffee is thought to have health benefits.
How does it work?
Green coffee beans are coffee beans that have not yet been roasted. These coffee beans contain a higher amount of chemical chlorogenic acid. This chemical is thought to have health benefits. For high blood pressure, it might affect blood vessels so that blood pressure is reduced.
For weight loss, chlorogenic acid in green coffee is thought to affect how the body handles blood sugar and metabolism.
Green coffee contains chlorogenic acid, a powerful antioxidant that tends to break down when coffee beans are roasted. Some research suggests that the
retention of chlorogenic acid in green coffee is largely responsible for the health benefits.
Although research is limited, there is evidence that green coffee can stimulate metabolism (the conversion of calories and oxygen into energy). Metabolism doesn’t only imply digestion; it dictates how well all cells in the body function, including those of the heart, lung, kidney, liver, and brain.
Here is just some of what the current research says about the benefits of green coffee:
Green coffee may be moderately beneficial to those trying to lose weight, the green coffee extract was significantly more effective than a placebo in lowering body weight. Green coffee was a safe and potentially beneficial weight loss aid.
Chlorogenic acid is one of the most abundant polyphenols in the foods we eat. Polyphenols are plant-based chemicals with antioxidant properties. They not only feel free on radicals that damage cells, but they are also believed to help regulate blood sugar (glucose).
While encouraging, this doesn’t mean that green coffee will benefit everyone with high blood pressure. This is especially true for people with caffeine sensitivity in whom green coffee may trigger the same symptoms as regular coffee, including increased blood pressure.
Interestingly, none of the participants in the Japanese trial experience changes in weight or body mass.
The benefits of green coffee in colorectal cancer prevention are even less clear.
On the one hand, animal studies have long shown how polyphenols in coffee can help protect against the formation of colon tumours. It has been suggested that green coffee, which is composed of 14 per cent chlorogenic acid, may enhance this effect.
On the flip side, coffee contains compounds that may increase the risk of colorectal cancer, either by promoting the mutation of cells or causing the breakdown of cellular DNA. Whether these carcinogenic compounds are created during the roasting of the beans is not yet clear.
In the end, these opposing forces neither appear to promote nor prevent the development of colorectal cancer. Until research can show otherwise, it would be safe to assume the same with green coffee.
Possible Side Effects
Green coffee and green coffee extracts are generally considered safe for adults. With that being said, little is known about the long-term safety of green coffee extract or supplements.
As with regular coffee, green coffee may cause side effects, particularly those with caffeine sensitivity. These include:
- Stomach upset
- Increased heart rate
- Ringing in the ears
Dosage and Preparation
There is no standardized dosing recommendation for green coffee extracts or supplements. Generally speaking, it is best to stay within the recommended dose on the product label if only to avoid side effects.