Coffee and Caffeine’s Effect to Our Brain

Caffeine promotes central nervous system stimulation, which helps people get alert by blocking adenosine in which is an inhibitory neurotransmitter in the brain that makes us feel sleepy and drowsy. Caffeine slows neural activity. 

 

Caffeine interacts with adenosine receptors in our brain.  Adenosine is a neurotransmitter which promotes sleep and adenosine normally builds up during the day.

 

 Caffeine and adenosine have a similar molecular structure. However, caffeine prevents adenosine from slowing us down. Caffeine promotes central nervous system stimulation and makes us feel alert.

 

Studies have shown that caffeine can boost brain function in the short term. Also, caffeine stimulates the central nervous system by promoting the release of other neurotransmitters, including noradrenaline, dopamine and serotonin. People may develop a tolerance to caffeine over time, which means you will need to consume more coffee than before to get the same effects.

 

Is Coffee Good For Our Brain?

Caffeine may improve our mood, reaction time, vigilance, attention, learning, general mental function.Coffee is a major source of antioxidants in the Western diet and coffee is associated with many health benefits, including a decreased risk of type 2 diabetes and liver disease.

 

Coffee contains hundreds of bioactive compounds any of these compounds are antioxidants. And antioxidants can fight the damage caused by free radicals in your cells.


Light-to-moderate caffeine intake provides impressive health benefits in many people. However, high dosages of caffeine may lead to undesirable side effects on our health and the responses vary from person to person.

 

Caffeine works well to block the effects of adenosine in our brain and triggers the release of adrenaline simultaneously, which help boost our energy level. Thus, too much caffeine can potentially lead to anxiety and nervousness. Caffeine-induced anxiety disorder is one of four caffeine-related syndromes listed in the Diagnostic and Statistical Manual of Mental Disorders (DSM), which is published by the American Psychiatric Association.

 

Extremely high daily intakes of 1,000 mg or more per day have been reported to cause jitteriness and similar symptoms in most people, whereas a moderate intake may lead to similar effects in caffeine-sensitive individuals.

 

Some people experience rapid breathing and increase stress levels because of caffeine.One study in 25 healthy men found that those who ingested approximately 300 mg of caffeine experienced more than double the stress levels of those who took a placebo.

 

Coffee’s caffeine content is highly variable. A large (“grande”) coffee at Starbucks contains about 330 mg of caffeine. Look at your caffeine intake if you feel worse or more nervous after having a coffee. 

 

adenosine: 腺苷。腺苷是大腦中一種抑制性神經遞質,會使我們感到睡意。

bioactive compounds 生物活性化合物

 


What are important active ingredients in coffee? 

  1. Caffeine is the most commonly consumed psychoactive substance worldwide. 
  2. Chlorogenic acids (CGAs): Polyphenol antioxidants may benefit some biological pathways, such as blood-sugar metabolism and high blood pressure. 
  3. Cafestol and kahweol: Present in coffee’s natural oil, high amounts of cafestol and kahweolare are found in unfiltered coffee. They may be good for the liver and protect against cancer, but a high intake may raise LDL cholesterol.
  4. Trigonelline: This alkaloid compound is unstable at high heat. Trigonelline may also help prevent dental cavities by inhibiting bacterial growth. However, the amounts of these substances in a cup of coffee varies.  The type of coffee beans and how the beans are roasted affects the amounts of trigonelline in a cup of coffee. 

 


Coffee and caffeine may affect our memory

Researchers debate the effects of caffeine on long-term memory. Some studies have found that caffeine enhances short-term memory. Other studies report no effects on memory or have even found that caffeine impaired performance on memory tasks.

 

One small study found that caffeine may improve long-term memory when administered after learning.When the subjects consumed a caffeine tablet after studying a series of images, their ability to recognize these images 24 hours later was strengthened. Caffeine also appeared to make these memories more resistant to being forgotten, compared to the placebo group.

 

Coffee and Fatigue
Most people get a cup of coffee to counteract fatigue so as to feel more energized and awake. Researches have shown caffeine may suppress feelings of fatigue. However, the energy boost only lasts for a certain amount of time. Then you desire another cup of coffee again. Consume large amounts of caffeine in the late afternoon or evening can potentially disrupt your sleep at night. 

 

Coffee May Reduce the Risk of Alzheimer’s Disease and Dementia
Alzheimer’s disease is the most common cause of dementia. Alzheimer’s generally starts slowly but gets severe over time. Alzheimer’s causes memory loss, couples with thinking and behavior problems.

Coffee and Parkinson’s Disease
Parkinson’s disease is a chronic disorder of the central nervous system, which is characterized by the death of nerve cells in the brain that secrete dopamine.  Consuming moderate amounts of coffee may protect against Parkinson’s disease. 

Conclusion

When consumed in moderation, coffee can be good for our brain, which may protect against brain diseases such as Alzheimer’s and Parkinson’s. Moderation intake of coffee is the key.  Excessive consumption of caffeine can potentially cause anxiety, jitters, heart palpitations. Higher doses of caffeine can actually be counterproductive by causing brain fog. (Reference

Also, some people are sensitive to caffeine. Children, teenagers and pregnant women should limit their caffeine intake. 

 

#image source

 

司馬儀

Countless people feel they are badly rewarded by God. Most people stigmatize their life troubles because they know nothing about “God’s discipline” in the Bible (Hebrews 12:11). It takes time to figure out the blessings in life. God does not tend to make anyone’s life perfect. It’s just some people hide their tears from you. According to the Bible, “It is easier for a camel to go through the eye of a needle than for someone who is rich to enter the kingdom of God” (NRSV, Mark 10:23-27). Because those who have been “given much, much will be demanded” (Luke 12; 47–48). As an editor, I tend to unveil the issues which are easily neglected by the mainstream public. The best way to support the website is to help share the articles on Facebook, Line or Instagram. Many thanks. 手機板或電腦版都建議「利用目錄或關鍵字搜尋主題」或留言發問。期許是兼具療癒性及知識性的平台,囊括心靈雞湯專欄、國內外醫療資訊、國內外電視劇電影專欄、日英語教學專欄、書單推薦、職場專欄、親子教育專欄、逛街情報、旅遊美食、理財專欄等。支持網站最好的方式,是幫忙把文章分享出去。 致父母們:你希望你的孩子聽話,是出自愛或恐懼? 最理想的親子關係是,父母讓孩子知道「即便你很愛我,你人生的所有選擇,也不需要都聽我的!」 關於教育,不該只focus要求孩子「聽話」,應該盡可能早點教會孩子「拒絕」「求救」「表達自己的想法」與「選擇和做決定的能力」。安全範圍內,給孩子摔跤的機會。 世界太多聲音,太容易迷失,互相督促!學問和人際關係,都最怕道聽塗說和一知半解。 理財,從照顧好自己的健康開始!中醫「肝開竅於目、心開竅於舌、脾開竅於唇、肺開竅於鼻、腎開竅於耳」。研究證實好壞情緒會關鍵性決定身體的發炎指數和血糖指數!容易緊繃焦慮不安或睡不好,多補充維生素B和鈣的食物(建議以原生食物取代補給品,補給品不建議天天吃)。術前或牙科前多補充鈣,因為鈣是解痛劑。術後或身體發炎期間或痘痘,多補充E,主修復,讓身體不易留疤! 根據營養學,害喜是因為缺乏B6,而多攝取含維生素E的食物,可避免baby有黃疸的情況。生產前多補充鈣質和維生素D的食物可以有效降低生產的疼痛。 母體本身缺乏維生素E,是造成早產的主要原因之一。攝取充足維生素E,可望終止慣性流產。 據國外研究,治療阿茲海默症(失智症),戒糖痊癒機率高!胃食道逆流,建議選擇鹼性飲食,忌過食!便秘,建議攝取水溶性纖維的蔬菜!還有,身體缺少油脂,便缺少潤滑劑,無法順利排便。肩頸痛、背痛建議按壓手背指間的穴道,效果立見!脖子控管甲狀腺和自律神經,甲狀腺控管體溫,所以手腳冰冷或自律神經失調或久坐族群,都應該經常按壓手背食指和中指之間的穴道,非常有效。嘉義,不容錯過的景點《鰲鼓濕地》《幸福山丘》《逐鹿部落》《傲慢烘培坊》。醫學推薦書《求醫不如求己》《向癒》。

您可能也會喜歡…

發佈留言

發佈留言必須填寫的電子郵件地址不會公開。

這個網站採用 Akismet 服務減少垃圾留言。進一步瞭解 Akismet 如何處理網站訪客的留言資料