অতিরিক্ত চিনি খেলে হয় মস্তিষ্কের রোগ, সাবধান!

চিনি খাওয়া যে ক্ষতিকর তা আমরা অনেকেই জানি। কিন্তু এ ক্ষতি যে মস্তিষ্ক পর্যন্ত পৌঁছাতে পারে, এ বিষয়টি অনেকেরই জানা ছিল না। কিন্তু সাম্প্রতিক এক গবেষণায় সে বিষয়টিই প্রমাণিত হলো। এক প্রতিবেদনে বিষয়টি জানিয়েছে ফক্স নিউজ।

মস্তিষ্কের স্মৃতি বিধ্বংসী একটি রোগের নাম অ্যালঝেইমার্স। আর গবেষকরা জানান, এ রোগের অন্যতম কারণ রক্তের অতিরিক্ত চিনি। বিশেষজ্ঞরা বলছেন, খাদ্যতালিকায় অতিরিক্ত চিনি থাকলে তাতে দেহেও তা বেড়ে যায়। ফলে মস্তিষ্কের স্মৃতি বিধ্বংসী রোগটিতে আক্রান্ত হওয়ার আশঙ্কা বেড়ে যায়।

অস্ট্রেলিয়ার অ্যালঝেইমার্স গবেষকরা জানান, তাদের সাম্প্রতিক এক গবেষণায় এ বিষয়টি জানা গেছে। মস্তিষ্কের স্মৃতি হারানো চার লাখ ১৩ হাজার ব্যক্তির মাঝে গবেষণায় দেখা যায়, তাদের প্রায় ৭০ শতাংশ ব্যক্তি অ্যালঝেইমার্সে আক্রান্ত। প্রতিদিন ২৪০ জনেরও বেশি এ রোগে নতুন করে আক্রান্ত হন বলে জানিয়েছে অ্যালঝেইমার্স অস্ট্রেলিয়া নামে একটি সংস্থা।

ইউনিভার্সিটি অব বাথের গবেষকরা দেখেছেন, অতিরিক্ত গ্লুকোজের কারণে প্রধান একটি এনজাইম বিনষ্ট হয়। আর এতে সংক্রমণ তৈরি হয় এবং মস্তিষ্কের এ রোগের প্রাথমিক লক্ষণ প্রকাশিত হয়।

ডায়াবেটিসের রোগীদের এ কারণে স্মৃতি বিধ্বংসী রোগে আক্রান্ত হওয়ার ঝুঁকি বেশি থাকে বলে জানাচ্ছেন গবেষকরা। কারণ রক্তের উচ্চমাত্রার শর্করা এক্ষেত্রে একটি বড় কারণ হিসেবে পরিচিত।

এ কারণে মস্তিষ্কের স্মৃতি বিধ্বংসী রোগের থেকে বাঁচতে হলে রক্তের শর্করার মাত্রা কমিয়ে রাখতে পরামর্শ দিচ্ছেন বিশেষজ্ঞরা। এ বিষয়ে গবেষণাটির ফলাফল প্রকাশিত হয়েছে সায়েন্টিফিক রিপোর্টস জার্নালে।

Health benefit of betel leaf

From using it in prayers and religious ceremonies to eating it in the form of a 'paan', betel leaf contain many curative and healing health benefits. The leaf are full of vitamins like vitamin C, thiamine, niacin, riboflavin and carotene and are a great source of calcium. Since betel is an aromatic creeper, you can easily grow it as an ornamental plant in your homes and derive the maximum health benefits from the same.
Often referred to as a paan leaf, here are some medicinal properties of the betel leaf.

https://www.youtube.com/watch?v=oO9_DXyZ6Rc&t=2s

1. Helps in treating diabetes: It is believed that the components present in betel leaf can reduce the level of sugar in the blood, thus treating diabetes.

2. Aids in weight-loss: Betel leaf can be used effectively by people who are trying to shed weight. It reduces 'Medha dhatu' (body fat) and increases the metabolic rate of the body.

3. Prevents carcinogens that lead to cancer: Chewing betel leaf is known to prevent oral cancer as it helps maintain the levels of ascorbic acid in the saliva. All you need to do is boil 10 to 12 betel leaves for a few minutes and add honey to the boiled water. Drinking this on a daily basis can help.

4. Heals wounds: Betel leaf, when applied over a wound and bandaged, can heal a wound and accelerate the healing process. They are also widely used in Ayurveda for treating boils.

5. Cures headache: If you are suffering from a severe headache, betel leaf can come to your rescue. The leaves have cooling properties which provide instant relief from the ache when applied externally.

Green tea: Health benefits

Green tea: Health benefits

https://www.youtube.com/watch?v=Mn7cAvP_Wo0&t=203s

Green tea is the healthiest beverage on the planet. It is loaded with polyphenols and nutrients that have powerful effects on the body. This includes improved brain function, fat loss, a lower risk of cancer and many other incredible benefits.

•      Green Tea plant is Camellia sinensis.

•      Green Tea likely originated in China.

•      Green Tea is an aromatic beverage.

•      Green Tea has a cooling, slightly bitter & astringent flavour.

•      Green tea has a too high content of polyphenols.

•      Green tea is a medicine and a healthful beverage

Here are 7 health benefits of green tea

1) Green tea and cancer prevention

According to the National Cancer Institute, the polyphenols in tea have been shown to decrease tumor growth in laboratory and animal studies and may protect against damage caused by ultraviolet UVB radiation.

Some studies have also shown the positive impacts of green tea on the following types of cancer:

breast

bladder

ovarian

colorectal (bowel)

esophageal (throat)

lung

prostate

skin

stomach

Researchers believe that it is the high level of polyphenols in tea that helps kill cancerous cells and stop them from growing.

2) Green tea heart benefits

A 2006 study published in the Journal of the American Medical Association concluded that green tea consumption is associated with reduced mortality due to all causes, including cardiovascular disease.

The participants who drank at least 5 cups of green tea per day had a significantly lower risk of dying (especially from cardiovascular disease) than those who drank less than one cup of tea per day.

Green tea contains catechins, polyphenolic compounds that are thought to exert numerous protective effects, particularly on the cardiovascular system.

Scientists think, green tea works on the lining of blood vessels.

It may also protect against the formation of clots, which are the primary cause of heart attacks.

3) Green tea and lower cholesterol

An analysis of published studies in 2011  found that consuming green tea, either as a beverage or in capsule form, was linked to significant but modest reductions in total and LDL or "bad" cholesterol.

4) Green tea for type 2 diabetes

Studies concerning the relationship between green tea and diabetes have been inconsistent. Some have shown a lower risk of developing type 2 diabetes for green tea drinkers than for those who consumed no tea, while other studies have found no association between tea consumption and diabetes at all.

5) Green tea and weight loss

Green tea may promote a small, non-significant weight loss in overweight and obese adults; however, since weight loss in the studies was so minimal, it is unlikely that green tea is clinically important for weight loss.

6) Green tea and inflammatory skin diseases

A 2007 study concluded that green tea could hold promise as a new treatment for skin disorderssuch as psoriasis and dandruff. Researchers studied an animal model for inflammatory skin diseases, often characterized by patches of dry, red, flaky skin caused by the inflammation and overproduction of skin cells. Those treated with green tea showed slower growth of skin cells and the presence of a gene that regulates the cells' life cycles.

7) Improves Dental Health

It controls bacteria and lowers the acidity of saliva and dental plaque; it’s a useful tool in preventing cavities.

Dietary fibre

Dietary fibre

Q. What is dietary fibre?

Dietary fibre or ‘roughage’ comprises the edible parts of plant that cannot be digested or absorbed in the small intestine and passes into the large intestine intact. This includes non-starch polysaccharides, oligosaccharides (e.g. inulin), lignin and associated plant substances (e.g. waxes).

The term dietary fibre also includes a type of starch known as resistant starch (found in pulses, partly-milled seeds and grains, some breakfast cereals) because it resists digestion in the small intestine and reaches unchanged the large intestine.

Official definition of dietary fibre differs a little among different institutions:

Organization (reference)	Definition
Institute of Medicine	Dietary fiber consists of nondigestible carbohydrates and lignin that are intrinsic and intact in plants. Functional fiber consists of isolated, nondigestible carbohydrates that have beneficial physiologic effects in humans. Total fiber is the sum of dietary fiber and functional fiber.
American Association of Cereal Chemists	Dietary fiber is the edible parts of plants or analogous carbohydrates that are resistant to digestion and absorption in the human small intestine, with complete or partial fermentation in the large intestine. Dietary fiber includes polysaccharides, oligosaccharides, lignin, and associated plant substances. Dietary fibers promote beneficial physiologic effects including laxation, and/or blood cholesterol attenuation, and/or blood glucose attenuation.
Codex Alimentarius Commission	Dietary fiber means carbohydrate polymers with ≥10 monomeric units, which are not hydrolyzed by the endogenous enzymes in the small intestine of humans.

Q. Write the Classification of Dietary fibre?

Dietary fibres are parts of plant foods that your body can’t digest. There are two types of fibre—

1.     Soluble fibre:-Soluble fibre dissolves in water to become gummy or viscous, promotes the excretion of fatty substances such as cholesterol and helps to regulate the body’s use of sugars.

Features of water-soluble fiber

Viscosity	Adsorptive property	Fermentability
Diet with water-soluble fiber transits slowly through the stomach and intestines because of its viscosity, reducing hunger and helping prevent overeating. It suppresses spikes in blood sugar after eating by slowing the absorption of sugar.	Water-soluble fiber adsorbs bile acid and cholesterol, aiding their excretion outside the body.	When water-soluble fiber ferments and decomposes in the large intestine, bifidobacteria and other good bacterium increase, improving the intestinal environment, which has an intestinal healing effect.

Soluble fibre is found in varying quantities in all plant foods, including:

·         legumes (peas, soybeans, lupins and other beans)

·         oats, rye, chia, and barley

·         some fruits (including figs, avocados, plums, prunes, berries, ripe bananas, and the skin of apples, quinces and pears)

·         certain vegetables such as broccoli, carrots, and Jerusalem artichokes

·         root tubers and root vegetables such as sweet potatoes and onions (skins of these are sources of insoluble fiber also)

·         psyllium seed husks (a mucilage soluble fiber) and flax seeds

·         nuts, with almonds being the highest in dietary fiber.

 Insoluble fibre:-Insoluble fibre  does not dissolve in water, but adds bulk and softness to stools. Thus, insoluble fibre promotes bowel regularity.

Features of water-insoluble fibre

High water retention	Fibrous, honeycombed, and spongy	Fermentability
Water-insoluble fiber swells up as it absorbs water in the stomach and intestines, stimulating the intestine, activating peristalsis, and promoting bowl movement.	Water-insoluble fiber is chewed well when eaten, helping prevent overeating, strengthening the jaw, and improving teeth alignment.	When water-insoluble fiber ferments and decomposes in the large intestine, bifidobacteria and other gut flora increase, improving the intestinal environment, which has an intestinal regulation effect. (Generally, water-insoluble fiber is less fermentable than water-soluble fiber.)

Sources of insoluble fibre include:

·         whole grain foods

·         wheat and corn bran

·         legumes such as beans and peas

·         nuts and seeds

·         potato skins

·         lignans

·         vegetables such as green beans, cauliflower, zucchini (courgette), celery, and nopal

·         some fruits including avocado, and unripe bananas

·         the skins of some fruits, including kiwifruit, grapes and tomatoes^.

Q.Write the property of dietary fibre.

Physicochemical properties

Dietary fiber has distinct physicochemical properties. Most semi-solid foods, fiber and fat are a combination of gel matrices which are hydrated or collapsed with microstructural elements, globules, solutions or encapsulating walls. Fresh fruit and vegetables are cellular materials.

·         The cells of cooked potatoes and legumes are gels filled with gelatinized starch granules. The cellular structures of fruits and vegetables are foams with a closed cell geometry filled with a gel, surrounded by cell walls which are composites with an amorphous matrix strengthened by complex carbohydrate fibers.

·         Particle size and interfacial interactions with adjacent matrices affect the mechanical properties of food composites.

·         Food polymers may be soluble in and/or plasticized by water. Water is the most important plasticizer, particularly in biological systems thereby changing mechanical properties.

·         The variables include chemical structure, polymer concentration, molecular weight, degree of chain branching, the extent of ionization (for electrolytes), solution pH, ionic strength and temperature.

·         Cross-linking of different polymers, protein and polysaccharides, either through chemical covalent bonds or cross-links through molecular entanglement or hydrogen or ionic bond cross-linking.

Cooking and chewing food alters these physicochemical properties and hence absorption and movement through the stomach and along the intestine

Physiological Properties:

1.     Decrease intestinal transit time

2.     Increase stool bulk

3.     Fermentable by colonic microflora

4.     Reduce blood total cholesterol

5.     Reduce blood LDL cholesterol

6.     Reduce post prandial blood glucose

7.     Reduce blood insulin levels.

Q. Writes the physiological effects of Dietary fibre.

The main physiological effects attributed to dietary fibre concern:

• Bowel function
Dietary fibre, particularly insoluble fibre, helps prevent constipation by increasing stool weight and decreasing gut transit time. This effect is enhanced if fibre intake is paralleled by an increase in water intake.
The short chain fatty acids, produced when fibre is fermented by gut bacteria, are an important source of energy for colon cells and might inhibit growth and proliferation of gut tumour cells.
By improving bowel function, dietary fibre can reduce the risk of diseases and disorders such as diverticular disease or haemorrhoids, and may also have a protective effect on colon cancer.

• Blood glucose levels
Soluble fibre, may slow digestion and absorption of carbohydrates and hence lower the rise in blood glucose that follows a meal (postprandial) and insulin response. This can help people with diabetes improve control their blood glucose levels.

• Blood cholesterol
Results of epidemiological studies identify another role for dietary fibre in the prevention of coronary heart disease (CHD) that of improving blood lipid profiles. Clinical trials confirm the results of these epidemiological studies. Isolated viscous fibres such as pectin, rice bran or oat bran lower both total serum cholesterol and low density lipoprotein (LDL or bad) cholesterol levels. At the same time, research continues to show that diets high in a mix of dietary fibre also protect against CHD.

• Other
While prevention of constipation, improved blood glucose levels, and blood lipid profiles predominate as beneficial outcomes of a diet high in dietary fibre, other benefits are worth noting. For example, because fibre provides bulk in the diet, without added calories, it can have a satiating effect on appetite; helping in weight management.

Q. Write the health benefit of different types of dietary fibre.

Types of Fiber	Soluble or Insoluble	Sources	Health Benefits
Cellulose, some hemicellulose	Insoluble	Naturally found in nuts, whole wheat, whole grains, bran, seeds, edible brown rice, skins of produce.	"Nature's laxative": Reduces constipation,lowers risk of diverticulitis, can help with weight loss.
Inulin oligofructose	Soluble	Extracted from onions and byproducts of sugar production from beets or chicory root. Added to processed foods to boost fiber.	May increase "good" bacteria in the gut and enhance immune function.
Lignin	Insoluble	Found naturally in flax, rye, some vegetables.	Good for heart health and possibly immune function. Use caution if you have celiac disease or are gluten intolerant.
Mucilage, beta-glucans	Soluble	Naturally found in oats, oat bran, beans, peas, barley, flaxseed, berries, soybeans, bananas, oranges, apples, carrots.	Helps lower bad LDL cholesterol, reduces risk of coronary heart disease and type 2 diabetes. Use caution if you have celiac disease or are gluten intolerant.
Pectin and gums	Soluble (some pectins can be insoluble)	Naturally found in fruits, berries, and seeds. Also extracted from citrus peel and other plants boost fiber in processed foods.	Slows the passage of food through the intestinal GI tract, helps lower blood cholesterol.
Polydextrosepolyols	Soluble	Added to processed foods as a bulking agent and sugar substitute. Made from dextrose, sorbitol, and citric acid.	Adds bulk to stools, helps prevent constipation. May cause bloating or gas.
Psyllium	Soluble	Extracted from rushed seeds or husks of plantagoovata plant. Used in supplements, fiber drinks, and added to foods.	Helps lower cholesterol and prevent constipation.
Resistant starch	Soluble	Starch in plant cell walls naturally found in unripened bananas, oatmeal, and legumes. Also extracted and added to processed foods to boost fiber.	May help manage weight by increasing fullness; helps control blood sugars.
Wheat dextrin	Soluble	Extracted from wheat starch, and widely used to add fiber in processed foods.	Helps lower cholesterol (LDL and total cholesterol), reduces risks of coronary heart disease and type 2 diabetes. Avoid if you have celiac disease or are gluten intolerant.

Fiber contents in some food

Dietary fibers are found in fruits, vegetables and whole grains. The exact amount of fiber contained in the food can be seen in the following table of expected fiber in USDA food groups/subgroups

Food group	Serving Mean	fiber g/serving
Fruit	0.5 cup	1.1
Dark-green vegetables	0.5 cup	6.4
Orange vegetables	0.5 cup	2.1
Cooked dry beans (legumes)	0.5 cup	8.0
Starchy vegetables	0.5 cup	1.7
Other vegetables	0.5 cup	1.1
Whole grains	28 g (1 oz)	2.4
Meat	28 g (1 oz)	0.1