Showing posts with label fast food. Show all posts
Showing posts with label fast food. Show all posts

Wednesday, August 8, 2012

Feed Your Brain


Children have lots of study to do but are rarely shown effective study techniques, let alone how to study without stress. As an ex- school teacher, academic and a life long student, I've spent a great deal of time refining my study habits to make them not only effective, but good for my health! I've also spent time teaching myself learning skills such as speed-reading and improving my memory and note taking skills using mind maps and another technique a friend of mine taught me called CapMaps. The little bit of time I've spent learning these techniques has been repaid many times over. I now teach these skills to my students, pensioner groups and corporate executives.
So to begin, let's get rid of words like home work and make it home play. We'll do a whole lot more and a lot more easily if we enjoy doing it, so let's make it as pleasurable as possible - starting with the words we use.
To study effectively you need good health and a good blood supply. Your brain uses more than 20 per cent of your body's energy, so it has to have the right nutrients all the time. When you study, don't scrunch up over the desk. It stops you breathing deeply and slows oxygen getting to your brain. Remember to stretch frequently, put your shoulders back and take a deep breath. This will help feed your brain.

Food for Thought

A nourishing diet is essential to give your brain the right nutrition and will increase your levels of concentration. Even small decreases in glucose can cause significant "brain fog", while shortages of antioxidants and excess bad fats lead to short-term and long-term memory problems. Not good for study. Here are some useful pointers to ensuring you eat well to make your study time effective:

* Eat breakfast. It provides glucose for your brain. In fact, not eating breakfast causes you to be 20 - 40 per cent "dumber" in studying and exams. People who don't eat breakfast also put on more weight and are unhealthier than people who do.  Raw muesli or porridge with nuts is a terrific way to fire up your brain. Add a piece of chopped fruit. Don't add sugar, but add as much fruit and crushed nuts and seeds as you like. Or maybe even an old fashioned cooked breakfast with some tomato, mushroom, spinach and beans thrown in.
* Don't eat and study at the same time. Take a break. Focus on one task at a time.
* In between meals nibbling on raw (not cooked) nuts and dried fruit will feed your brain. Leave the chocolate for after the exams and forget the potato chips.
* Decrease bad oils including butter and margarine, oils in bread and greasy foods such as takeaways. They block your arteries and thicken your blood, slowing the amount of fuel getting to your brain (ie oxygen and glucose). They also contribute to some long-term damage in the brain.
* Decrease sugar and processed foods. They create a short-term glucose high in the blood and a long-term glucose low, causing foggy thinking.
* Increase good oils high in Essential Fatty Acids (EFAs) and include fish oils and flaxseed. Sixty per cent of your healthy brain is made up of fats and these EFAs are the biggest part.  Good fats = good thinking. They provide the building blocks for the brain, the infrastructure for you to be smarter.
* Increase dark green vegetables such as spinach, silver beet, broccoli and bok choy. They provide essential vitamins and minerals for your brain to function and think clearly. One study found better memory results from eating greens. They put muscles in your brain.
* Eliminate over processed grain products.  Eat only wholegrain and wholemeal grains; they contain essential minerals and vitamins for your brain. Rye bread gives you the lowest sugar hit. Even better go for the new range of sprouted breads.
* A little coffee or tea is okay, but don't have it after 4 pm to keep you awake and certainly don't have it at night to keep studying. If you need coffee to keep you awake at night in order to keep studying, you're fooling yourself about your level of effectiveness. Good sleep is the best way of dealing with exams. If you have a deadline, wake early and start when your mind is really alert.
* Drink lots of water
* Avoid sugary soft drinks, particularly just before an exam.
* Supplement with brain vitamins and minerals (speak to your naturopath or health food store), especially Vitamin C for it's antioxidant action
* Gingko Biloba taken for two to three weeks has been shown to improve memory and thinking.
* Vitamin Bs are very good for feeding your nervous system, especially if you're feeling stressed.

During  periods of study, exercise at least 45 minutes each day. Exercise gets blood flowing to your brain, supplying oxygen, antioxidants and glucose.  It also releases substances such as noradrenalin in your body to prepare you for exams and reduce stress. Research shows that small bouts of exercise in between study and before exams can make a significant difference in performance.
During periods of intensive study you need hourly breaks (or even 30 minute breaks). Make your break a brisk 10 minutes walk. It will help everything you have done sink into the powerful, subconscious part of your brain.  After two hours, take a 20 minute brisk walk and give yourself a good break. Don't fool yourself that you're still working well. You're probably functioning at around or less than 50 per cent. It's okay for mundane tasks, but not if you need really focused concentration.
Set regular study patterns. Don't do everything late at night.  Your brain is already getting tired. The morning is the best time to study and that is not just after midnight. Learn how to use your brain effectively.
Do a memory course or a mind-mapping course. It can make remembering specific information so much easier, and will improve your general memory as well. After a memory course you can learn more than a hundred facts and figures in less than an hour, have fun doing it and have perfect recall.
Talk about the ideas and information you have learnt with friends, a study buddy. It will help lock it into your long-term memory and you'll learn new information from each other.

Learn to Relax

Taking deep breaths is an important start, because it sends relaxation messages to your brain. There are many other things you can do. Best learning occurs in the alpha and theta brain wave states. These are when you are most relaxed and not stressed. When you are in a stressed busy state you are in an beta state and you cant learn well. A simple meditation can take only five to ten minutes and can prevent you stressing and get you into an alpha brain wave learning state. Try sitting still, and slowly, with each breath, count from 50 to one. Focus on the numbers only. If you get distracted, go back to the last number and keep going.
Be aware of your posture while you're studying - don't hunch over the desk. It stops you breathing deeply and slows down the flow of oxygen to your brain. Remember to stretch. Put your shoulders back and take a deep breath regularly. Being hunched over a desk also tells your brain that you are tired and not very positive, so that's how it starts to respond.
I always tell my students to start studying and exams with the biggest smile you can make. Sounds strange, maybe even funny, but it sends positive messages to your brain. It increases the feel good chemicals in the brain, increases blood flow to the brain and immediately reduces stress. Research shows it also increases your creativity, and it's fun.
Plan your study and plan to study well.  By having the right attitude and planning your study, you can save hours and hours of what may otherwise be wasted time.

* Set goals for the amount of time and the quality of time for your period of study. 
* Set goals for each study period, the exams and for the year. These will help to focus and motivate you.
* Write down your goals - what you want to achieve, how you are going to achieve it and why it's important to achieve it.
* Put your list of goals on the wall in your study.
* Don't wait for deadlines to motivate you, get in early.
* Visualise yourself being successful when you study.
* Visualise yourself in the exam feeling positive and writing the right answers. See yourself coming out of the exam and feeling really positive.
* After your exams or long periods of study reward yourself (but not with junk foods).
* There are many other things you can do to improve your thinking but the best one is to use your logic and commonsense.

To learn effectively you need to have a study environment that's positive, enjoyable and free from distractions. It also has to be a healthy environment.
* Study in an enjoyable environment. 
* Put on some gentle music. Baroque music, such as Bach and the music of Mozart has a very positive effect on brain waves and helps you to learn. It may not be cool but you will be smarter.
* Open the doors and windows to the study. Fresh air is critical to good brain function. Stuffy air or chemical smells will affect your brain's ability to focus. One gas in particular, carbon monoxide, reduces the oxygen available to the brain. Carbon monoxide is found in high concentrations in car exhaust and tobacco smoke.
* Don't smoke, and especially don't smoke in your study.  It has hundreds of chemicals that attack your brain cells.
* Get rid of distractions. Despite what you may think, you can only concentrate on one thing at a time. Don't waste your time by studying at 10 per cent. Turn off  the phone, television and all other distractions, with the exception of quiet, light background music.
* Wherever you study, make it a positive place. Decorate it in pleasing colours, have good light, pictures and photographs on the walls, and put up messages, quotes and photographs that inspire you.



Saturday, May 5, 2012

Junk food increases depression


In the latest study (Public Health Nutrition March 2012 15 : pp 424-432) consumers of fast food were 51% more likely to develop depression compared to those who eat little or none. Even more convincing the study found a dose-response relationship. That is, the more fast food you consume, the greater the risk of depression. The study looked at the consumption of fast food (hamburgers, sausages, pizza) and processed pastries (muffins, doughnuts, croissants) of  8,964 participants with a median follow-up of 6·2 years. In their normal conservative mode the scientists concluded that fast-food and commercial baked goods consumption may have a detrimental effect on depression risk. Not just fast food (take-aways), the study found that even eating small quantities of commercial baked goods was linked to a significantly higher chance of developing depression. In an earlier study by the same authors they found a 42% increase in the risk associated with fast food

Depression is a serious and debilitating condition that can affect anyone. It is estimated that around 35% of the population will develop mild to severe depression in their lifetime. Australian Bureau of Statistic indicate that on average one in every five females and one in eight males will experience depression during their lifetime. Moreover, there are around one million of Australian adults and 160000 adolescents who live with depression each year.

Adding to the weight of this study a large number of studies have shown that particular components of the diet such as n-3 fatty acids and B-vitamins as well certain minerals supplements, can decrease the rate of depression.
           
Many studies have shown Omega-3 fatty acids to significantly reduce depression levels. Countries where there is large fish consumption among the people tend to have a lower rate of depression than societies where fish is not a prominent staple in the diet. Western countries with a low to moderate per capita fish intake of 11-32kg had an annual prevalence of depression in the range of 3-6%.  Countries such as Japan who have a high per capita fish consumption of 68kg had a depression rate of 0.12%. The more omega-3s in your blood, the more serotonin you are likely to make and the more responsive you become to its effects. It also reduces your risk of heart attack, storke and so many other chronic illnesses.

The research consistently shows that people with either low blood levels of the B-vitamins especially folic acid are more likely to be depressed. In a study of hospitalised older people participants who received a normal hospital diet plus multivitamin and mineral supplements for six weeks found lower levels of depression regardless of the initial level of depression of the individual. The authors wrote, “Many epidemiological and case-control studies have shown associations between folate and vitamin B12 deficiency and depression. In a study of 3,500 over-65-year-olds in Chicago over an average of 7.2 years of follow-up, the researchers noted that increased intakes of vitamins from food and supplements B6 and B12 were associated with a ‘decreased likelihood of incident depression.’ For every 10-milligram increase in the intake of vitamin B6 and for every 10-microgram increase in vitamin B12, the risk of developing symptoms of depression was decreased by two percent per year.

A number of studies have found lower levels of zinc and chromium in depressed patients. In one study seven out of the ten depressed patients taking chromium showed a big improvement, versus none on the placebo. A larger study of 113 patients found that after eight weeks 65% of those on chromium had had a major improvement, compared to 33% on placebos

Unfortunately most processed foods are low in nutrients including omega 3 fatty acids, B vitamins and the minerals like zinc and chromium.

Thursday, April 15, 2010

Health insurance companies sponsor obesity and illness

A recent article in CBS news reporter John Hartge highlights the ridiculous state and short sightedness of our modern health system. Reporting on a study in the American Journal of Public Health by Dr. Wesley Boyd from the Harvard Medical School health insurance firms invest nearly $2 billion in companies that sell fast foods linked to obesity and cardiovascular disease. The irony is that they have to make large payouts for sick, overweight and obese people.

The study found that Northwestern Mutual owns $422.2 million in fast-food stock, with $318.1 million invested in McDonald's. Massachusetts Mutual owns $366.5 million of fast-food stock, including $267.2 in McDonald's. ING, an investment firm that also has life and disability insurance, has total fast-food holdings of $406.1 million, including $12.3 million in Jack in the Box, $311 million in McDonald's, and $82.1 million in Yum! Brands, which owns Pizza Hut, KFC and Taco Bell. New Jersey-based Prudential Financial Inc. sells life insurance and long-term disability coverage. With total fast-food holdings of $355.5 million, Prudential Financial owns $197.2 of stock in McDonald's and also has significant stakes in Burger King, Jack-in-the-Box and Yum! Brands.

While this is US information I would suggest it is the same in Australia. It also raises many bigger questions about where all our money is invested. Perhaps we are all contributing to the problem if our investment portfolios and superannuation is feeding the fast food industry.

Given that obesity has now overtaken tobacco smoke as the single biggest preventable cause of death, perhaps it is time we also treated the processed food industry the same way as the tobacco industry instead of letting them have free reign.