Monday, 15 January 2018

NUTRITION FACTS ON CARROTS



Carrots have a number of health benefits. They are a weight loss friendly food and have been linked to lower cholesterol levels and improved eye health.
The carotene antioxidants in them have also been linked to reduced risk of cancer.
They are found in many colors, including yellow, white, orange, red and purple.
The traditional orange colored carrots get their bright color from beta-carotene, an antioxidant that is converted to vitamin A in the body.
CARROTS ARE RICH IN THE FOLLOWING NUTRIENTS 

Carrots are mainly composed of water and carbohydrates.
The carbs consist of starch and sugars, such as sucrose and glucose.
They are also a relatively good source of fiber, with one medium sized carrot (61 grams) providing 2 grams.
Carrots often rank low on the glycemic index, which is a measure of how quickly foods raise blood sugar after a meal.
The glycemic index of carrots ranges from 16-60, being lowest for raw carrots, a little higher for cooked carrots and highest for pureed carrots.
Eating low-glycemic foods is linked to numerous health benefits, and is considered particularly beneficial for diabetics.

Fiber

Pectin is the main form of soluble fiber in carrots.
Soluble fibers can lower blood sugar levels by slowing down the digestion of sugar and starch.
They can also feed the friendly bacteria in the gut, which may lead to improved health and decreased risk of disease.
Certain soluble fibers can also impair the absorption of cholesterol from the digestive tract, lowering blood cholesterol.
The main insoluble fibers in carrots are in the form of cellulose, but also hemicellulose and lignin.
Insoluble fibers reduce the risk of constipation and promote regular and healthy bowel movements.

Carrots are a good source of several vitamins and minerals, especially vitamin A (from beta-carotene), biotin, vitamin K (phylloquinone), potassium and vitamin B6.
  • Vitamin A: Carrots are rich in beta-carotene, which is converted to vitamin A in the body. Vitamin A promotes good vision, and is important for growth, development, and immune function.
  • Biotin: One of the B-vitamins, formerly known as vitamin H. It plays an important role in fat and protein metabolism.
  • Vitamin K1: Also known as phylloquinone, vitamin K is important for blood coagulation and can promote bone health.
  • Potassium: An essential mineral, important for blood pressure control.
  • Vitamin B6: A group of related vitamins that are involved with the conversion of food into energy.

Much of the research on carrots has focused on carotenoids.

Reduced Risk of Cancer

Diets rich in carotenes may have a protective effect against several types of cancer.
This includes prostate cance, colon cancer and stomach cancer.
Women with high circulating levels of carotenoids may also be at reduced risk of breast cancer.
Older research suggested that carotenoids could be protective against developing lung cancer, but newer studies found no protective effect.

Lower Blood Cholesterol

High blood cholesterol is a well-known risk factor for heart disease.
Intake of carrots has been linked to lower cholesterol levels.

Weight Loss

Carrots, as parts of meals, can increase satiety and decrease calorie intake  in subsequent meals.
For this reason, carrots may be a useful addition to an effective weight loss diet.

Eye Health

Individuals that are low in vitamin A are more likely to experience night blindness, a condition that may improve by eating carrots or other foods rich in vitamin A or carotenoids.
Carotenoids may also cut the risk of age-related macular degeneration.

Monday, 18 December 2017

SEVERAL REASONS WHY HIGH CONSUMPTION OF FRIED FOODS ARE BAD FOR YOU.



Deep frying is a common cooking method used across the globe. It’s often used by restaurants and fast food chains as a quick and inexpensive way to prepare foods.
Popular fried foods include fish, french fries, chicken strips and cheese sticks, although you can deep fry just about anything.
Many people like the taste of fried foods. Yet these foods tend to be high in calories and trans fat, so eating a lot of them can have negative effects on your health.
This article explains why commercially fried foods are bad for you and provides some healthier alternatives to consider.
Fried Foods Are High in Calories
Compared to other cooking methods, deep frying adds a lot of calories 
For starters, fried foods are typically coated in batter or flour prior to frying. Furthermore, when foods are fried in oil, they lose water and absorb fat, which further increases their calorie content.
Generally speaking, fried foods are significantly higher in fat and calories than their non-fried counterparts.
For example, one small baked potato (100 grams) contains 93 calories and 0 grams of fat, while the same amount (100 grams) of french fries contain 319 calories and 17 grams of fat.
As you can see, calories add up quickly when eating fried foods
Fried Foods Are High In Trans Fat
Trans fats are formed when unsaturated fats undergo a process called hydrogenation.
Food manufacturers often hydrogenate fats using high pressure and hydrogen gas to increase their shelf life and stability, but hydrogenation also occurs when oils are heated to very high temperatures during cooking.
The process changes the chemical structure of fats, making them difficult for your body to break down, which can ultimately lead to negative health effects.
In fact, trans fats are associated with an increased risk of many diseases, including heart disease, cancer, diabetes and obesity.
Since fried foods are cooked in oil at extremely high temperatures, they are likely to contain trans fats.
However, it’s important to distinguish between these artificial trans fats and trans fats that occur naturally in foods like meat and dairy products.
These have not been shown to have the same negative effects on health as those found in fried and processed foods.

Eating Too Much Fried Food May Increase The Risk Of Certain Diseases 
Several studies in adults have found an association between eating fried foods and the risk of chronic disease.
Generally speaking, eating more fried foods is associated with a greater risk of developing type 2 diabetes, heart disease and obesity.

Heart Disease

Eating fried foods may contribute to high blood pressure, low “good” HDL cholesterol and obesity, which are all risk factors for heart disease.
One study found that women eating one or more servings of fried fish per week had a 48% higher risk of heart failure, compared to those who consumed 1–3 servings per month.
Meanwhile, those who ate a diet high in fruits and vegetables were at a significantly lower risk.

Diabetes

Several studies have found that eating fried foods puts you at a higher risk of developing type 2 diabetes
One study found that people who ate fast food more than two times per week were twice as likely to develop insulin resistance, compared to those who ate it less than once a week.

Obesity

Fried foods contain more calories than their non-fried counterparts, so eating a lot of them can significantly increase your calorie intake.
Furthermore, studies indicate that the trans fats in fried foods may play a significant role in weight gain, as they can affect the hormones that regulate appetite and fat storage.
Thus, the problem may be the type of fat, rather than the amount of fat
Meanwhile, increases in monounsaturated and polyunsaturated fat intakes were not associated with weight gain.
Regardless of whether it’s because fried food is high in calories or trans fat, multiple observational studies have shown a positive association between its intake and obesity 
If you enjoy the taste of fried foods, consider cooking them at home using healthier oils or alternative “frying” methods.

Healthy Oils

The type of oil used for frying heavily influences the health risks associated with fried foods. Some oils can withstand much higher temperatures than others, making them safer to use.
Generally speaking, oils that consist mostly of saturated and monounsaturated fats are the most stable when heated.
Coconut oil, olive oil and avocado oil are among the healthiest.
  • Coconut oil: Over 90% of the fatty acids in coconut oil is saturated, which makes it very resistant to heat. In fact, studies have shown that even after eight hours of continuous deep frying, its quality does not deteriorate.

  • Olive oil: Olive oil contains mostly monounsaturated fats, making it relatively stable for high-temperature cooking. One analysis found that olive oil can be used in a deep fryer for up to 24 hours before a significant amount of oxidation begins to occur.
  • Avocado oil: The composition of avocado oil is similar to that of olive oil. It also has an extremely high heat tolerance, making it a great choice for deep frying.
Using these healthier oils may decrease some of the risks associated with eating fried foods.

Alternatives to Traditional Frying

You may also want to consider some alternative cooking methods, including:
  • Oven-frying: This method involves baking foods at a very high temperature (450°F or 232°C), which allows foods to get crispy using little or no oil.
  • Air-frying: You can also “fry” foods in a hot air fryer. These machines work by circulating extremely hot air around food. The foods end up crispy on the outside and very moist on the inside, similar to traditionally fried foods, but using 70–80% less oil


Tuesday, 14 November 2017

DIABETES: A Yes Or No?



DIABETES  is a chronic disease that occurs either when the pancreas does not produce enough insulin or when the body cannot effectively use the insulin it produces. Insulin is a hormone that regulates blood sugar. Hyperglycaemia, or raised blood sugar, is a common effect of uncontrolled diabetes and over time leads to serious damage to many of the body's systems, especially the nerves and blood vessels.

There are three main types of diabetes

1) Type 1 diabetes results from the body's failure to produce insulin, and requires the person to be injected with insulin also referred to as insulin-dependent diabetes or juvenile diabetes.

Symptoms for type 1 diabetes includes

excessive excretion of urine (polyuria),
Increased thirst (polydipsia),
constant hunger, weight loss, vision changes, and fatigue. These symptoms may occur suddenly.

2) Type 2 diabetes results from insulin resistance, a condition in which cells fail to use insulin properly, sometimes combined with an absolute insulin deficiency. (formerly referred to as non-insulin dependent diabetes mellitus.
Type 2 diabetes comprises the majority of people with diabetes around the world, and is largely the result of excess body weight and physical inactivity.

Symptoms may be similar to those of type 1 diabetes, but are often less marked. As a result, the disease may be diagnosed several years after onset, once complications have already arisen.

Until recently, this type of diabetes was seen only in adults but it is now also occurring increasingly frequently in children.

3) Gestational diabetes: is when pregnant women who have never had diabetes before have a high blood glucose level during pregnancy. It may preced development of type2 if not we'll managed.

Women with gestational diabetes are at an increased risk of complications during pregnancy and at delivery. They and their children are also at increased risk of type 2 diabetes in the future.

Gestational diabetes is diagnosed through prenatal screening, rather than through reported symptoms.

Other forms of diabetes mellitus includes congenital diabetes, (which is due to genetic defect of insulin secretion), cystic fibrosis related diabetes, steroid diabetes induced by high doses of glucocorticoid.

Pancreas transplant have been tried with limited success.
Gestational diabetes usually resolves after delivery.

Diabetes without proper treatment can cause many complications such as

WHAT ARE THE COMMON CONSEQUENCES OF DIABETES?

Over time, diabetes can damage the heart, blood vessels, eyes, kidneys, and nerves.

— Adults with diabetes have a two- to three-fold increased risk of heart attacks and strokes

— Combined with reduced blood flow, neuropathy (nerve damage) in the feet increases the chance of foot ulcers, infection and eventual need for limb amputation.

— Diabetic retinopathy is an important cause of blindness, and occurs as a result of long-term accumulated damage to the small blood vessels in the retina. 2.6% of global blindness can be attributed to diabetes

— Diabetes is among the leading causes of kidney failure

Adequate treatment of diabetes is thus important, as well as blood pressure control and lifestyle factor such smoking cessation and maintaining a healthy body weight.

In 2014, 8.5% of adults aged 18 years and older had diabetes. In 2015, diabetes was the direct cause of 1.6 million deaths and in 2012 high blood glucose was the cause of another 2.2 million deaths.

PREVENTION OF DIABETES

-Eat smaller portions of food
-loose small amount of weight by being physically active for 30mins at least 2-4 times in a week

-Eat a healthy diet, avoiding sugar and saturated fats intake; and
-Avoid tobacco use – smoking increases the risk of diabetes and cardiovascular diseases.

-Eat break fast everyday and make your meal n snack times regular by having them at the same time each day.

-drinking a full glass of water before  eating may also reduce your  appetite.

REMEMBER!!!
ADEQUATE NUTRITION, LEADS TO A HEALTHIER SOCIETY.

Wednesday, 25 October 2017

ARE LAXATIVES SAFE FOR WEIGHT LOSS?


Many people turn to laxatives when they’re looking to lose weight fast.
However, there are serious concerns over the safety and effectiveness of using laxatives for weight loss.
This article explores more. 
What Are Laxatives 
Laxatives  are medications people use to help stimulate bowel movements or loosen up stool to ease its passage.
They are often used to treat constipation, a condition caused by infrequent, painful or difficult bowel movements.
They have also become a popular method for weight loss. Many people believe that using laxatives can help increase the frequency of bowel movements and allow for quick, easy and effortless weight loss.
However, the truth of their safety and effectiveness is another story, as you’ll see later in this article.
There are a few different classes of laxatives that work in different ways. The main types are:
  • Stimulant laxatives: These work by speeding up the movement of the digestive tract.
  • Osmotic-type laxatives: This type causes the colon to retain more water, which increases bowel movement frequency.
  • Bulk-forming laxatives: These move through the intestines undigested, absorbing water and adding bulk to stool.
  • Saline laxatives: With these, water is drawn into the small intestine, which helps promote a bowel movement.
  • Lubricant laxatives: This type of laxative coats the surface of the stool as well as the lining of the intestines to ease bowel movements.
  • Stool softeners: These allow stool to absorb more water, making it softer for easier passage.
Laxatives and Weight Loss
Laxative use has become incredibly common among those looking to shed a few pounds quickly. In fact, some studies estimate that more than 4% of the general population engages in laxative abuse.
It is true that laxatives may help increase weight loss, but the results are only temporary.
Several types of laxatives work by pulling water from your body into the intestines, allowing stool to absorb more water for an easier passage. With this method, the only weight you’ll lose is from the water you excrete through stool.
To date, there have been no studies supporting the idea that laxative use can lead to lasting weight loss.
Instead, it can lead to dangerous side effects like dehydration, electrolyte imbalance and possibly even dependence

–Use of Laxatives Can Lead To Dehydration 
One of the most common side effects of laxative use is dehydration.
This is because many laxatives work by drawing water into the intestines from other tissues, resulting in a loss of water through the stool.
If you're not careful to replenish the water that is lost, it can lead to dehydration.
Common symptoms of dehydration include headaches, reduced urine output, increased thirst, fatigue, dry skin and dizziness.
Dehydration may also be linked to more serious side effects.

–Use of Laxatives Can Cause Electrolyte Imbalance 
Electrolytes are substances dissolved in your bodily fluids that are important for helping your cells and tissues function normally.
Some common electrolytes include chloride, sodium, potassium, magnesium, calcium and phosphate.
If the balance of these essential electrolytes is thrown off, it can cause dangerous side effects including seizures, confusion and coma.
Laxatives may lead to the loss of important electrolytes. This could create an electrolyte imbalance, one of the most dangerous side effects of laxative abuse.
Common symptoms of electrolyte imbalance can include thirst, headaches, heart palpitations, fatigue, weakness and muscle aches.
Other Possible Side Effects Of Laxatives
In addition to causing dehydration, electrolyte imbalances and possible dependence, laxative use has been associated with a number of other dangerous side effects, including:
  • Rhabdomyolysis: One case study showed that laxative abuse may have induced rhabdomyolysis, causing the rapid deterioration of muscle tissue and the release of a harmful protein into the bloodstream.
  • Gastrointestinal damage: A small study found that some recovered anorexia patients had changes in gastrointestinal function and long-term pancreatic damage as a result of former laxative use.
  • Liver damage: A case study reported that laxative use contributed to liver damage in one patient.
  • Kidney failure: Another case study showed that overusing laxatives appeared to have caused severe kidney failure requiring dialysis, a treatment that helps remove waste and toxins from the blood
Better Ways To Loose Weight  
If you are using unhealthy weight loss methods like laxatives, purging or severe food restriction, stop and seek professional help to prevent long-term consequences to your health.
There are many better, safer and more effective ways to lose weight without putting your health on the line.
Here are some simple, proven ways to shed extra pounds:
  • Eat more fruits and vegetables:They’re low in calories, but rich in fiber. A higher intake of fruits and vegetables has been associated with a lower body weight.
  • Increase your physical activity:Participating in aerobic exercise a few times per week can aid in weight loss and help prevent weight regain.
  • Reduce your portion sizes: Smaller portions mean fewer calories. One study even found that simply using smaller plates caused participants to eat less.
  • Eat a high-protein breakfast: Starting your day with a protein-packed breakfast has been shown to reduce appetite and food intake over the course of the day.
  • Decrease your intake of added sugars: Sugar is high in calories, low in nutrients and leads to weight gain. Research shows that drinking sugar-sweetened beverages may be associated with obesity

Tuesday, 17 October 2017

7 EVIDENCE BASED REASONS WHY YOU ARE ALWAYS HUNGRY



Hunger is your body’s natural cue that it needs more food.
When you’re hungry, your stomach may “growl” and feel empty, or you may get a headache, feel irritable or be unable to concentrate.
Most people can go several hours between meals before feeling hungry again, though this isn’t the case for everyone.
There are several possible explanations for this, including a diet that lacks protein, fat or fiber, as well as excessive stress or dehydration. Some of the reasons includes, 
1. You are Not Eating Enough Protein 
Consuming enough protein is important for appetite control.
Protein has hunger-reducing properties that may help you automatically consume fewer calories during the day. It plays a role in increasing the production of hormones that signal fullness and reducing the levels of hormones that stimulate hunger.
Due to these effects, you may feel hungry frequently if you’re not eating enough protein.
Many different foods are high in protein , so it is not difficult to get enough of it through your diet. Including a source of protein in every meal can help prevent excessive hunger.
Animal products, such as meat, poultry, fish and eggs, contain high amounts of protein.
It is also found in some dairy products, including milk and yogurt, as well as a few plant-based foods like legumes, nuts, seeds and whole grains

2. You are not sleeping Enough 
Getting adequate sleep is extremely important for your health.
Sleep is required for the proper functioning of your brain and immune system, and it is associated with a lower risk of several chronic illnesses, including heart disease and cancer.
Additionally, sleeping enough is a factor in controlling appetite, as it helps regulate ghrelin, the appetite-stimulating hormone. Lack of sleep leads to higher ghrelin levels, which is why you may feel hungrier when you are sleep deprived
In one study, 15 people who were sleep deprived for only one night reported being significantly more hungry and chose 14% larger portion sizes, compared to a group that slept for eight hours.
Getting enough sleep also helps ensure adequate levels of leptin  which is a hormone that promotes feelings of fullness.
To keep your hunger levels under control, it is generally recommended to get at least eight hours of uninterrupted sleep each night.

3. You Are Eating Too Much Refined Carbohydrates 
Refined Carbohydrates have been processed and stripped of their fiber, vitamins and minerals.
One of the most popular sources of refined carbs is white flour, which is found in many grain-based foods like white rice, bread and pasta. Foods such as soda, candy and baked goods, which are made with processed sugars, are also considered to be refined carbs.
Since refined carbs lack filling fiber, your body digests them very quickly. This is a major reason why you may be hungry frequently if you eat a lot of refined carbs, as they do not promote significant feelings of fullness.
Furthermore, eating refined carbs may lead to rapid spikes in your blood sugar. This leads to increased levels of insulin, a hormone responsible for transporting sugar into your cells.
When a lot of insulin is released at once in response to high blood sugar, it works to quickly remove sugar from your blood, which may lead to a sudden drop in blood sugar levels.
Blood sugar fluctuations signal your body that it needs more food, which is another reason why you may feel hungry often if refined carbs are a regular part of your diet.
To reduce your refined carb intake, simply replace them with healthier, whole foods like vegetables, fruit, legumes and whole grains. These foods are still high in carbs, but they are rich in fiber, which is helpful for keeping hunger under control

4. You Are Not Drinking Enough Water 
Proper hydration is incredibly important for your overall health.
Drinking enough water has several health benefits, including promoting brain and heart health and optimizing exercise performance. Additionally, water keeps your skin and digestive system healthy.
Water is also quite filling and has the potential to reduce appetite when consumed before meals.
Due to water’s role in keeping you full, you may find that you feel hungry frequently if you’re not drinking enough of it.
It is also known that feelings of thirst can be mistaken for feelings of hunger. If you’re always hungry, it may be helpful to drink a glass or two of water to find out if you are just thirsty.
To ensure you’re properly hydrated, simply drink water when you feel thirsty. Eating lots of water-rich foods, including fruits and vegetables, will also contribute to your hydration needs.

5. Your Diet Lacks Fibre
If your diet lacks fiber, you may feel hungry frequently.
Consuming lots of high-fibre foods is beneficial for keeping hunger under control. High-fiber foods slow your stomach’s emptying rate and take longer to digest than low-fiber foods.
Additionally, a high fiber intake influences the release of appetite-reducing hormones and the production of short-chain fatty acids, which have been shown to have fullness-promoting effects.
It’s important to note that there are different types of fiber, and some are better than others at keeping you full and preventing hunger. Several studies have found soluble fiber, or fiber that dissolves in water, to be more filling than insoluble fiber.
Many different foods, such as oatmeal, flaxseeds, sweet potatoes, oranges and Brussels sprouts, are excellent sources of soluble fiber.
Not only is a high-fiber diet helpful for reducing hunger, it is also associated with several other health benefits, such as a reduced risk of heart disease, diabetes and obesity.
To ensure you’re getting enough fiber, opt for a diet that is rich in whole, plant-based foods, such as fruits, vegetables, nuts, seeds, legumes and whole grains

6. You Are Drinking Too Much Alcohol
 is well known for its appetite-stimulating effects 
Studies have shown that alcohol may inhibit hormones that reduce appetite, such as leptin, especially when it is consumed before or with meals. For this reason, you may feel hungry often if you drink too much alcohol.
Not only does alcohol have the ability to make you hungrier, but it may also impair the part of your brain that controls judgment and self-control. This may lead you to eat more, regardless of how hungry you are.
To reduce the hunger-inducing effects of alcohol, it is best to consume it moderately or avoid it completely.

7. You Eat Too Fast. 
The rate at which you eat may play a role in how hungry you are.
Several studies have shown that fast eaters have greater appetites and a tendency to overeat at meals, compared to slow eaters. They are also more likely to be overweight or obese.
In one study in 30 women, fast eaters consumed 10% more calories at a meal and reported significantly less fullness, compared to slow eaters.
Another study compared the effects of eating rates in those with diabetes. Those who ate a meal slowly became full more quickly and reported less hunger 30 minutes after the meal, compared to fast eaters.
These effects are partly due to the lack of chewing and reduced awareness that occurs when you eat too fast, which are both necessary to alleviate feelings of hunger.
Additionally, eating slowly and chewing thoroughly gives your body and brain more time to release anti-hunger hormones and convey fullness signals.
If you are hungry frequently, it may help to slow down when you eat. You can do this by taking a few deep breaths before meals, putting your fork down between bites and increasing the extent to which you chew your food.

Thursday, 12 October 2017

HOW MUCH CAFFEINE IS CONTAINED IN GREEN TEA AND HOW MUCH DO YOU NEED


Green tea is a popular drink with many health benefits.
In fact, some studies have linked green tea with improved brain function and brain aging. It may also reduce the risk of heart disease, type 2 diabetes and cancer.
However, just like regular tea, green tea contains caffeine. This can be a concern for people who want to be aware of or limit their caffeine intake.

What Is Caffeine And What Does It Do 
Caffeine is a naturally occurring chemical found in the leaves, beans and fruits of more than 60 plants, including the leaves of tea plants.
It’s a central nervous system stimulant that is consumed all over the world to boost alertness and fight fatigue.
It works by blocking the effects of a neurotransmitter called adenosine, which builds up over the course of the day and makes you feel tired.
Drinking caffeine has also been linked with a number of health benefits, such as improved mood and brain function, an increase in metabolism and improved exercise performance.
However, some people may be more sensitive to the effects of caffeine than others.
Additionally, people who consume too much caffeine may experience restlessness, insomnia or an irregular heartbeat.

How Much Caffeine Is In A Cup Of Green Tea 
The average amount of caffeine in an 8-oz (230-ml) serving of green tea is around 35 mg 
However, this can vary. The actual amount can be anywhere between 30 and 50 mg per 8-oz serving.
Since the caffeine in green tea occurs naturally, the amount depends largely on the variety of tea plant, its growing conditions and the way it is processed and brewed.
For example, tea made with older leaves usually has less caffeine than tea made with younger tea leaves.
The amount of caffeine in your drink can also be influenced by the type of green tea you choose and how you prepare it.
For example, bagged teas tend to be more caffeinated than loose leaf teas.
This may be because the tea leaves in tea bags are crushed up, so more caffeine is extracted and infused into the drink.
Additionally, powdered green teas have a higher caffeine content than both bagged and loose green tea.
Nevertheless, portion sizes tend to be small — 1 gram or half a teaspoon per serving — for powdered teas, so the caffeine content of the bagged tea and powdered matcha tea can be similar.
Finally, the longer you brew your tea and the hotter the water, the more caffeine will make its way into your drink

Green Tea Contains Less Caffeine Compared To Other Caffeinated Drinks 
Caffeine is found in a wide range of beverages like black tea, coffee, soft drinks and energy drinks.
Interestingly, green tea also contains the amino acid L-theanine, which has been shown to work synergistically with caffeine. Thus, you get a milder but different kind of buzz than with coffee, despite the lower caffeine content of green tea.
In particular, the combination of L-theanine and caffeine has been shown to help improve both alertness and focus, which may make green tea a better drink than coffee if you’re doing tasks that require a lot of thought 

Is Caffeine In Green Tea Something To Worry About 
Caffeine is a widely used stimulant. When consumed in the recommended amounts, it is considered very safe.
For adults over the age of 19, the safe limit is considered to be around 400 mg per day, or 13 mg/pound (6 mg/kg) of body weight.
However, to prevent the negative effects of caffeine, it’s often recommended that you space out your caffeine, limiting the amount to around 200 mg at a time.
200 mg of caffeine is around four 8-ounce cups of green tea, so one 8-ounce serving of green tea would put you well within those limits.
Overall, green tea is low in caffeine compared to other caffeinated beverages. As long as you are consuming caffeine within these recommended limits, then the caffeine in green tea shouldn’t be anything to worry about.