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Caffeine and green tea offer cognitive benefits from "summary" of Brain Food by Lorraine Perretta,Oona van den Berg
Caffeine is a well-known stimulant that can give you a much-needed energy boost, but did you know that it can also improve your cognitive function? It works by blocking adenosine, a neurotransmitter that makes you feel tired. By doing so, caffeine can enhance your focus, attention, and overall mental performance. Green tea also contains caffeine, but it also has another powerful component called L-theanine. This amino acid has been shown to increase the activity of the neurotransmitter GABA, which has anti-anxiety effects. The combination of caffeine and L-theanine in green tea can promote better cognitive performance than caffeine alone. Research has shown that both caffeine and green tea can improve various aspects of cognitive function, such as memory, reaction time, and attention span. These cognitive benefits can be particularly useful when you need to focus on a task that requires mental alertness and concentration. In addition to the short-term cognitive benefits, regular consumption of caffeine and green tea has also been linked to long-term brain health. Studies have suggested that these substances may help protect against age-related cognitive decline and reduce the risk of neurodegenerative diseases such as Alzheimer's and Parkinson's. It's important to note that while caffeine and green tea can offer cognitive benefits, it's also crucial to consume them in moderation. Excessive intake of caffeine can lead to negative side effects such as anxiety, insomnia, and increased heart rate. As with any dietary changes, it's best to consult with a healthcare professional to determine the right amount of caffeine and green tea for you.
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