jueves, 31 de diciembre de 2015
martes, 29 de diciembre de 2015
lunes, 28 de diciembre de 2015
Why happiness is healthy
Follow CNN's Project Happy to explore what happiness means today, dive deep into the different ways we pursue it and find some tools to help make your life better. Come join us and #gethappy!
(CNN)Happiness -- you know it when you see it, but it's hard to define.
You might call it a sense of well-being, of optimism or of meaningfulness in life, although those could also be treated as separate entities. But whatever happiness is, we know that we want it, and that is just somehow good.
We also know that we don't always have control over our happiness. Research suggests that genetics may play a big role in our normal level of subjective well-being, so some of us may start out at a disadvantage. On top of that, between unexpected tragedies and daily habitual stress, environmental factors can bring down mood and dry up our thirst for living.
Being able to manage the emotional ups and downs is important for both body and mind, said Laura Kubzansky, professor of social and behavioral sciences at Harvard School of Public Health.
"For physical health, it's not so much happiness per se, but this ability to regulate and have a sense of purpose and meaning," Kubzansky said.
Why be happy?
Many scientific studies, including some by Kubzansky, have found a connection between psychological and physical well-being.
A 2012 review of more than 200 studies found a connection between positive psychological attributes, such as happiness, optimism and life satisfaction, and a lowered risk of cardiovascular disease. Kubzansky and other Harvard School of Public Health researchers published these findings in the journal Psychological Bulletin.
It's not as simple as "you must be happy to prevent heart attacks," of course. If you have a good sense of well-being, it's easier to maintain good habits: Exercising, eating a balanced diet and getting enough sleep, researchers said. People who have an optimistic mindset may be more likely to engage in healthy behaviors because they perceive them as helpful in achieving their goals, Kubzansky said.
Lower blood pressure, normal body weight and healthier blood fat profiles were also associated with a better sense of well-being in this study.
For now these studies can only show associations; they do not provide hard evidence of cause and effect. But some researchers speculate that positive mental states do have a direct effect on the body, perhaps by reducing damaging physical processes. For instance, another of Kubzansky's studies found that optimism is associated with lower levels of inflammation.
If what you mean by happiness is specifically "enjoyment of life," there's newer evidence to support that, too. A study in the Canadian Medical Association Journal found that people ages 60 and older who said they enjoyed life less were more likely to develop disability over an eight-year period. Mobility was also related to enjoyment of life. This study does not prove that physical problems are caused by less enjoyment of life, but suggests a relationship.
Where happiness comes from: genes + environment
There is substantial evidence that genetics play a big role in happiness, according to Nancy Segal, psychologist at California State University, Fullerton, and author of "Born Together -- Reared Apart."
Research has shown that identical twins tend to have a similar level of happiness, more so than fraternal twins. And in identical twins, one twin's happiness is a better predictor of the other twin's current or future happiness than educational achievement or income, Segal said.
"If you have happy parents and happy children, I think that people usually assume it's because the children are modeling the parents," she said. "But that's not really so. You need to make the point that parents pass on both genes and environments."
What's more, there seems to be a certain level of happiness that individuals have generally, to which they usually gravitate, Segal said. That level depends on the person, and the situations he or she is in.
Even if genetics has a big influence, though, that doesn't mean anyone is biologically stuck being unhappy, she said. It might take more work if your baseline mood is low, but certain therapies have proven useful for elevating psychological well-being.
The environment is still quite important for psychological well-being, too, Kubzansky said.
"To say to someone, 'Don't worry, be happy,' is kind of not looking at the whole picture of, what are the environmental constraints on things they can do?" Kubzansky said.
Money and time
You might be thinking: "Maybe I would be happier if I had more money." There's that old cliché "money doesn't buy happiness" -- but is it true? A 2010 study in Proceedings of the National Academy of Sciences found that emotional well-being rises with income up to a point, which seems to be a household income of $75,000. Day-to-day happiness did not increase with higher incomes.
But when participants were asked about overall satisfaction with their lives, that did continue to rise in conjunction with income, even after $75,000, Princeton University researchers Daniel Kahneman and Angus Deaton found. Their results show a sharp distinction between how people see themselves in terms of happiness "today" vs. life satisfaction.
"More money does not necessarily buy more happiness, but less money is associated with emotional pain," Kahneman and Deaton wrote. "Perhaps $75,000 is a threshold beyond which further increases in income no longer improve individuals' ability to do what matters most to their emotional well-being, such as spending time with people they like, avoiding pain and disease, and enjoying leisure."
Would you be happier if you bought the car you always wanted? Several studies suggest experiences make us happier than possessions. That's partly because once you have purchased something, such as a new car, you get used to seeing it every day and the initial joy fades, experts say. But you can continue to derive happiness from memories of experiences over time.
Experiences form "powerful and important memories that I wouldn't trade for anything in the world," Thomas Gilovich, professor of psychology at Cornell University, told CNN in 2009.
But if you're in the market for a birthday present for your sweetheart, a material object can still be meaningful, becoming a keepsake with sentimental value that increases over time, Gilovich said.
Or maybe you'll be happier once you've lived longer. Research has also found that some sense of happiness may come with age.
Older adults may be able to better regulate their emotions than younger people, expose themselves to less stress and experience less negative emotion, Susan Turk Charles, a psychologist at the University of California, Irvine, told CNN in 2009. More science needs to be done on whether the diminished negative response is also associated with a feeling of happiness.
Happiness: Living in the moment
But what about right now -- what can we do to make ourselves feel more positive?
If you're seeking to increase your own sense of happiness, try mindfulness techniques. Mindfulness means being present and in the moment, and observing in a nonjudgmental way, Susan Albers, psychologist at the Cleveland Clinic, told CNN in 2010.
Can mindfulness help manage pain and mental illness?
Mindfulness comes from Buddhism and is key to meditation in that tradition. Therapies for a wide variety of conditions, including eating disorders, depression and PTSD, incorporate mindfulness. Focusing on the here and now is a counterbalance to findings that mind-wandering is associated with unhappiness.
Activities such as keeping a gratitude diary and helping other people are also associated with feelings of well-being, Kubzansky said.
A variety of smartphone apps are also available that claim to help you monitor and enhance your moods. But don't feel you have to face emotional challenges alone; a professional therapist can help you get to where you want to be.
If a sense of well-being makes a healthier person, then policy-makers should also promote large-scale initiatives to encourage that, Kubzansky said. Creating parks to encourage exercise and insituting flexible work-family initiatives are just some of the ways that communities can become healthier as a whole.
So remember: A glass half full might be healthier than a glass half empty.
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10 Health Benefits of Sea Salt
Sea salt is rapidly becoming more popular, as more and more people are learning about all the health benefits that the salt has to offer. The salt is obtained naturally from the sea, and does not go through any processing that alters the natural make-up of the salt.
Thus it contains many essential trace minerals that your body needs in order to be healthy. This natural salt is healthier than the iodized salt available in the market. Read about the ten great benefits to adding sea salt to your diet:
Strong Immune System – Sea salt naturally helps you to build up a strong immune system so that you can fight off the cold virus, the fever and flu, allergies and other autoimmune disorders.
Alkalizing – Sea salt is alkalizing to the body, as it has not been exposed to high heat and stripped of its minerals, nor does it have any harmful man-made ingredients added to it. Thus it can help you to prevent and reverse high levels of acids in the body, which in turn eliminates the risks for serious and life-threatening diseases.
Weight Loss – Believe it or not, but sea salt can also help you in weight loss. It helps the body to create digestive juices so that the foods you eat are digested faster, and it helps to prevent buildup in the digestive tract, which eventually can lead to constipation and weight gain.
Skin Conditions – A sea salt bath can help to relieve dry and itchy skin as well as serious conditions such as eczema and psoriasis. The bath naturally opens up the pores, improves circulation in the skin and hydrates the tissues so that your skin can heal.
Asthma – Sea salt is effective in reducing inflammation in the respiratory system. Thus the production of phlegm is slowed down so that you can breathe easier again. Some say that sprinkling sea salt on the tongue after drinking a glass of water is just as effective as using an inhaler. But the great thing about sea salt is that it has no side effects when taken in moderation.
Heart Health – When salt is taken with water it can help to reduce high cholesterol levels, high blood pressure and help to regulate an irregular heart beat. Thus sea salt can help to prevent atherosclerosis, heart attacks and strokes.
Diabetes – Sea salt can help to reduce the need for insulin by helping to maintain proper sugar levels in the body. Thus the salt is an essential part of the diet if you are diabetic, or at risk for the disease.
Osteoporosis – Just over 1/4 of the amount of salt that is in the body is stored in the bones, where it helps to keep them strong. When the body lacks salt and water it begins to draw the sodium from the bones, which then eventually can lead to osteoporosis. Thus by drinking plenty of water and consuming salt in moderation you can prevent osteoporosis.
Muscle Spasms – Potassium is essential for helping the muscles to function properly. Sea salt not only contains small amounts of potassium, but it also helps the body to absorb it better from other foods. Thus it is effective in helping to prevent muscle pains, spasms and cramps.
Depression – Sea salt also has shown to be effective in treating various types of depression. The salt helps to preserve two essential hormones in the body that help you to better deal with stress. These hormones are serotonin and melatonin, which help you to feel good, and relax and sleep better at night.
sábado, 12 de diciembre de 2015
King of Bitters (Andrographis paniculata)
Professional International Certified Courses at ITM Thai Hand Amsterdam, January 2016.
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What is the digestive system:
The digestive system is made up of the gastrointestinal (GI) tract—also called the digestive tract—and the liver, pancreas, and gallbladder. The GI tract is a series of hollow organs joined in a long, twisting tube from the mouth to the anus. The hollow organs that make up the GI tract are the mouth, esophagus, stomach, small intestine, large intestine—which includes the rectum—and anus. Food enters the mouth and passes to the anus through the hollow organs of the GI tract. The liver, pancreas, and gallbladder are the solid organs of the digestive system. The digestive system helps the body digest food.
Bacteria in the GI tract, also called gut flora or microbiome, help with digestion. Parts of the nervous and circulatory systems also play roles in the digestive process. Together, a combination of nerves, hormones, bacteria, blood, and the organs of the digestive system completes the complex task of digesting the foods and liquids a person consumes each day.
Why is digestion important?
Digestion is important for breaking down food into nutrients, which the body uses for energy, growth, and cell repair. Food and drink must be changed into smaller molecules of nutrients before the blood absorbs them and carries them to cells throughout the body. The body breaks down nutrients from food and drink into carbohydrates, protein, fats, and vitamins.
Carbohydrates. Carbohydrates are the sugars, starches, and fiber found in many foods. Carbohydrates are called simple or complex, depending on their chemical structure. Simple carbohydrates include sugars found naturally in foods such as fruits, vegetables, milk, and milk products, as well as sugars added during food processing. Complex carbohydrates are starches and fiber found in whole-grain breads and cereals, starchy vegetables, and legumes. The Dietary Guidelines for Americans, 2010, recommends that 45 to 65 percent of total daily calories come from carbohydrates.1
Protein. Foods such as meat, eggs, and beans consist of large molecules of protein that the body digests into smaller molecules called amino acids. The body absorbs amino acids through the small intestine into the blood, which then carries them throughout the body. The Dietary Guidelines for Americans, 2010, recommends that 10 to 35 percent of total daily calories come from protein.
Vitamins. Scientists classify vitamins by the fluid in which they dissolve. Water-soluble vitamins include all the B vitamins and vitamin C. Fat-soluble vitamins include vitamins A, D, E, and K. Each vitamin has a different role in the body’s growth and health. The body stores fat-soluble vitamins in the liver and fatty tissues, whereas the body does not easily store water-soluble vitamins and flushes out the extra in the urine. Read more about vitamins on the Office of Dietary Supplements website at www.ods.od.nih.govExternal NIH Link.
Fats. Fat molecules are a rich source of energy for the body and help the body absorb vitamins. Oils, such as corn, canola, olive, safflower, soybean, and sunflower, are examples of healthy fats. Butter, shortening, and snack foods are examples of less healthy fats. During digestion, the body breaks down fat molecules into fatty acids and glycerol. The Dietary Guidelines for Americans, 2010, recommends that 20 to 35 percent of total daily calories come from fat.
does digestion work?
Digestion works by moving food through the GI tract. Digestion begins in the mouth with chewing and ends in the small intestine. As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. The body then absorbs these smaller molecules through the walls of the small intestine into the bloodstream, which delivers them to the rest of the body. Waste products of digestion pass through the large intestine and out of the body as a solid matter called stool.
Table 1 shows the parts of the digestive process performed by each digestive organ, including movement of food, type of digestive juice used, and food particles broken down by that organ.
Organ | Movement | Digestive Juices Used | Food Particles Broken Down |
---|---|---|---|
Mouth | Chewing | Saliva | Starches |
Esophagus | Swallowing | None | None |
Stomach | Upper muscle in stomach relaxes to let food enter and lower muscle mixes food with digestive juice | Stomach acid | Protein |
Small intestine | Peristalsis | Small intestine digestive juice | Starches, protein, and carbohydrates |
Pancreas | None | Pancreatic juice | Starches, fats, and protein |
Liver | None | Bile acids | Fats |
How does food move through the GI tract?
The large, hollow organs of the GI tract contain a layer of muscle that enables their walls to move. The movement of organ walls—called peristalsis—propels food and liquid through the GI tract and mixes the contents within each organ. Peristalsis looks like an ocean wave traveling through the muscle as it contracts and relaxes.
Esophagus. When a person swallows, food pushes into the esophagus, the muscular tube that carries food and liquids from the mouth to the stomach. Once swallowing begins, it becomes involuntary and proceeds under the control of the esophagus and brain. The lower esophageal sphincter, a ringlike muscle at the junction of the esophagus and stomach, controls the passage of food and liquid between the esophagus and stomach. As food approaches the closed sphincter, the muscle relaxes and lets food pass through to the stomach.
Stomach. The stomach stores swallowed food and liquid, mixes the food and liquid with digestive juice it produces, and slowly empties its contents, called chyme, into the small intestine. The muscle of the upper part of the stomach relaxes to accept large volumes of swallowed material from the esophagus. The muscle of the lower part of the stomach mixes the food and liquid with digestive juice.
Small intestine. The muscles of the small intestine mix food with digestive juices from the pancreas, liver, and intestine and push the mixture forward to help with further digestion. The walls of the small intestine absorb the digested nutrients into the bloodstream. The blood delivers the nutrients to the rest of the body.
Large intestine. The waste products of the digestive process include undigested parts of food and older cells from the GI tract lining. Muscles push these waste products into the large intestine. The large intestine absorbs water and any remaining nutrients and changes the waste from liquid into stool. The rectum stores stool until it pushes stool out of the body during a bowel movement
How do digestive juices in each organ of the GI tract break down food?
Digestive juices contain enzymes—substances that speed up chemical reactions in the body—that break food down into different nutrients.
Salivary glands. Saliva produced by the salivary glands moistens food so it moves more easily through the esophagus into the stomach. Saliva also contains an enzyme that begins to break down the starches from food.
Glands in the stomach lining. The glands in the stomach lining produce stomach acid and an enzyme that digests protein.
Pancreas. The pancreas produces a juice containing several enzymes that break down carbohydrates, fats, and proteins in food. The pancreas delivers digestive juice to the small intestine through small tubes called ducts.
Liver. The liver produces a digestive juice called bile. The gallbladder stores bile between meals. When a person eats, the gallbladder squeezes bile through the bile ducts, which connect the gallbladder and liver to the small intestine. The bile mixes with the fat in food. The bile acids dissolve fat into the watery contents of the intestine, much like how detergents dissolve grease from a frying pan, so the intestinal and pancreatic enzymes can digest the fat molecules.
Small intestine. Digestive juice produced by the small intestine combines with pancreatic juice and bile to complete digestion. The body completes the breakdown of proteins, and the final breakdown of starches produces glucose molecules that absorb into the blood. Bacteria in the small intestine produce some of the enzymes needed to digest carbohydrates
What happens to the digested food molecules?
The small intestine absorbs most digested food molecules, as well as water and minerals, and passes them on to other parts of the body for storage or further chemical change. Specialized cells help absorbed materials cross the intestinal lining into the bloodstream. The bloodstream carries simple sugars, amino acids, glycerol, and some vitamins and salts to the liver. The lymphatic system, a network of vessels that carry white blood cells and a fluid called lymph throughout the body, absorbs fatty acids and vitamin.
How is the digestive process controlled?
Hormone and nerve regulators control the digestive process.
Hormone Regulators
The cells in the lining of the stomach and small intestine produce and release hormones that control the functions of the digestive system. These hormones stimulate production of digestive juices and regulate appetite.
Nerve Regulators
Two types of nerves help control the action of the digestive system: extrinsic and intrinsic nerves.
Extrinsic, or outside, nerves connect the digestive organs to the brain and spinal cord. These nerves release chemicals that cause the muscle layer of the GI tract to either contract or relax, depending on whether food needs digesting. The intrinsic, or inside, nerves within the GI tract are triggered when food stretches the walls of the hollow organs. The nerves release many different substances that speed up or delay the movement of food and the production of digestive juices.
Points to Remember
- Digestion is important for breaking down food into nutrients, which the body uses for energy, growth, and cell repair.
- Digestion works by moving food through the gastrointestinal (GI) tract.
- Digestion begins in the mouth with chewing and ends in the small intestine.
- As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. The body then absorbs these smaller molecules through the walls of the small intestine into the bloodstream, which delivers them to the rest of the body.
- Waste products of digestion pass through the large intestine and out of the body as a solid matter called stool.
- Digestive juices contain enzymes that break food down into different nutrients.
- The small intestine absorbs most digested food molecules, as well as water and minerals, and passes them on to other parts of the body for storage or further chemical change. Hormone and nerve regulators control the digestive process.