Green tea: Health benefits, side effects Of Green Tea You Never Knew About
Green tea health benefits
Listed below are to the possible health benefits associated with green tea. Green tea was used in traditional Chinese or Indian medicine to the control bleeding and heal wounds, aid digestion, improve heart and mental health, and regulate body temperature.
Recent studies have shown green tea can potentially have positive effects on everything from weight loss to liver disorders, type 2 diabetes, and Alzheimer’s disease.
It is important to note that more evidence is required before these the possible health benefit links are proved definitive:
1. Improve Brain Function And Mental Performance
While the stimulants in tea can keep you awake, they can also make your brain function better. The main stimulant, caffeine, is present in tea at enough of a dose to provide a lift for most people without causing the increased anxiety and “jitters” associated with too much coffee.
In the brain, the main method of the action of caffeine is to the block adenosine receptors, allowing neurons to fire for longer, increasing brain activity. Studies have shown caffeine improves concentration and memory.
Additionally, the amino aide L-theanine has a relaxing effect while simultaneously increasing alertness, which, in combination with caffeine, can increase brain function and help you be more productive.
2. Protect Your Brain And Prevent Cognitive Decline
Not only can drinking green tea improve brain function in the short term, it may also protect your brain in the long term. In particular, data show it may help stave off Alzheimer’s and Parkinson’s diseases.
Alzheimer’s disease is the most common neurodegenerative disease and a leading cause of dementia. Parkinson’s disease is second most common neurodegenerative disease, resulting in the death of the dopamine-producing neurons in the brain.
Multiple studies show that the antioxidant catechins in green tea can have a protective effect on neurons, potentially lowering your risk of Alzheimer’s and Parkinson’s deseases.
3. Burn Fat
Clinical studies suggest that green tea may boost your metabolism and help you burn fat. Green tea can also be the help you lose weight and lower your risk of the becoming overweight or obese. Much of this effect is likely due to caffeine, but other compounds in tea may also contribute to this effect. By helping you can selectively burn the fat you have stored in your body for energy, green tea may help to you feel fuller and maintain a more steady energy level, resulting in less hunger cravings and less calories consumed.
In particular, one randomized controlled 12 week study of 240 men and women showed the group that received green tea extract had significant decreases in body weight, body fat percentage, body fat mass, waist circumference, hip circumference and areas of fat throughout the body.
4. Lower Your Risk Of Type II Diabetes
Type II diabetes is a disease that has reached epidemic proportions over the past few decades and now afflicts hundreds of millions of people worldwide.
Diabetics lose their sensitivity to insulin, which means insulin is less effective in signaling to cells to absorb sugar from the blood stream, resulting in both higher blood sugar and higher blood insulin levels. Because both sugar and insulin are damaging to the cardiovascular system, over time many adverse effects result.
Green tea can lower and help stabilize your blood sugar levels ; in fact, studies show that green tea can even improve insulin sensitivity or reduce blood sugar levels. One study among Japanese individuals found that those who drank the most green tea had a very significantly lower risk of developing type II diabetes. Other studies have shown similar results.
5. Maintain A Healthy Cardiovascular System
Cardiovascular diseases, which lump heart disease, stroke, and other diseases of the heart and blood vessels caused by atherosclerosis and hypertension into one category, are the most prevalent causes of death in the world. Studies show that green tea can improve some of the main risk factors for these diseases, which includes helping regulate total cholesterol, LDL cholesterol, and triglycerides. One method by the which green tea might help: it is significantly increases to the antioxidant levels of your blood, protecting LDL cholesterol particles from the oxidation—one of causes of heart disease.
Studies have shown green tea to drinkers have a lower risk of the cardiovascular disease. Other studies show that the black tea has similar effects. In fact, researchers estimate that the rate of heart attack decreases measurably with the consumption of just a few cups of tea per day.
Green tea side effects and risks
There are little to no known side effects and contraindications to the drinking green tea for adults. However, the following risks and complications should be made clear:
Caffeine sensitivity – those with severe caffeine sensitivities could experience insomnia, anxiety, irritability, nausea, or upset stomach.
Blood thinners – those taking blood thinners such as Coumadin/warfarin should drink green tea with caution due to its vitamin K content. It is also be recommended to avoid green tea and aspirin, because they both reduce the clotting effectiveness of platelets.
Other stimulants – if taken with stimulant drugs, green tea could increase blood pressure and heart rate.
Green tea supplements are unregulated by FDA and may also contain other substances unsafe for health and with unproven health benefits. Always check with a doctor before starting any herb or supplement regimen.
In particular, pregnant or breastfeeding women, those with heart problems or high blood pressure, kidney or liver problems, stomach ulcers, or anxiety disorders should not take green tea supplements or extracts.