Apr
01
2007

Red Meat Linked To Heart Disease In Diabetics

By | Diabetes, Heart Disease, Nutrition

Red meat is one of the sources of protein, but doctors from the Harvard School of Public Health reporting in the January edition of Diabetes Care, that a type 2 diabetes diet should be lean in red meat.

Type 2 diabetics are at risk for subsequent coronary heart disease (CHD), and intake of iron rich food was significantly associated with a greater risk of fatal CHD. The results come from a prospective study of 6,161 women from the Nurses’ Health Study. All of these patients reported a diagnosis of adult onset diabetes, and they were followed between 1980 through 2000, which amounts to an impressive 54,455 person-years follow-up. Attention was paid to the food questionnaires, which were monitored for the consumption of iron and red meat such as beef, pork or lamb as a main dish, also for the use of beef in roast beef sandwiches and mixed dishes, hamburger, hot dog, processed meat and bacon. Note was also taken of other nutrients such as seafood and poultry.
Women with diabetes who ate the most iron in the form of heme found in red meats had a 50% increased risk of total coronary heart disease as compared to those with the lowest intake. The risk ratio with women was more obvious in post menopause when compared with pre menopause.

Red Meat Linked To Heart Disease In Diabetics

Red Meat Linked To Heart Disease In Diabetics

While lean beef may be a good protein food to the average population, type 2 diabetics might choose to cut back on red meat and processed red meat sources and replace it with a heart-friendlier choice. Fresh seafood, rich in omega -3 fatty acids, would rank high on the list of a healthy eating plan.

Reference: The Medical Post, February 20, 2007, page21

Last edited December 5, 2012

Mar
01
2007

Check For Vitamin B12 Deficiency In Elderly

By | Mental Health, Nutrition, Prevention

Elderly patients frequently are seen at the doctor’s office because they are “feeling poorly”. Concerned family members mention that there is lack of energy, and mental impairment may also be present. Immediately there may be the question, whether these are symptoms of Alzheimers disease. The other observation may be that the older person is not eating properly. Family physicians will order laboratory tests including vitamin B12 levels. If a deficiency is shown, patients will be advised to take a vitamin supplement, and they may receive injections of vitamin B12.
The unfortunate fact is that vitamin B 12 levels are notoriously unreliable in the diagnosis of deficiency. As early as 1988 a publication in the New England Journal of Medicine showed that neuropsychiatric disorder due to vitamin B12 deficiency can be present in a patient who had normal blood levels and no other findings. It does take some other avenues to detect the deficiency. The blood can be tested for the metabolite called MMA (methylmalonic acid) which is raised with vitamin 12 deficiency. A second test is the measurement of HTC (holotranscobalamin), which is the fraction of vitamin B12 bound to the plasma protein transcobalamin, which delivers the vitamin to the tissues of the body.
Dr. Cherie McCracken and colleagues from the department of psychiatry at Liverpool University, England studied 42 men and 42 women ages 69 to 93.They were tested for cognitive functions like orientation, language, attention and memory. In addition researchers took measurements of the MMA and HTC, the tests mentioned above. None of the test persons had dementia due to the selection criteria, but 31% were cognitively impaired. Mental scores indicating cognitive impairment were associated with increasing age and MMA, and the areas of language comprehension, language expression and ideation practice (translating an idea into an action) were affected.

Check For Vitamin B12 Deficiency In Elderly

Check For Vitamin B12 Deficiency In Elderly

The reason for the correlation of MMA with impairment of brain function can be explained by the fact that MMA is toxic to the oxidative function of mitochondria. The process is like a chain reaction: when mitochondria are poisoned, the nerve cells will lack energy for proper function.
Despite this sophisticated interplay of blood levels and cell function in the brain, the message that comes from the researchers is very simple. The MMA has to be ordered as a test in elderly persons, and the next important step is supplementation with vitamin B12 to prevent deterioration in mental functioning.

More information about:

1. Causes of dementia: http://nethealthbook.com/neurology-neurological-disease/alzheimers-dementia-and-delirium/dementia/

2. Pernicious anemia: http://nethealthbook.com/anemia/anemia-from-deficient-red-blood-cell-production/megaloblastic-macrocytic-anemia/

Reference: The Medical Post, January 16, 2007, page 27

Last edited November 2, 2014

Mar
01
2007

Olive Oil No Magic Elixir

By | Health, Nutrition

Health trends come and go, and some myths need to be demystified, such as the notion that we need a lot of one beneficial food to achieve good health. The Mediterranean diet has become a buzz word in the public, and there is certainly nothing wrong with a diet that emphasizes the benefits of vegetables and fish with omega-3 fatty oil. These figure prominently in foods of the Mediterranean. Olive oil, which is one of the fat sources, has been also touted as a “miracle food”, and the benefits of the healthy fats to which it belongs have received a lot of attention.
Dr. James Kenney, who holds a PhD in nutrition at the at the Pritikin Longevity Centre, questions inflated health claims of olive oil. No matter, which way you look at it, olive oil remains a calorie-dense and nutrient-poor food. Pound for pound, like all refined oils, olive oil has more than 4000 calories, and 13% to 14% of the calories in olive oil come from saturated fat. The good news is that compared to lard (38% saturated fat) and butter (63% saturated fat) olive oil is the better choice. People who switch from butter to olive oil will see a reduction of cholesterol, reports Dr. Kenney. The reason is that they are eliminating a lot of saturated fat, trans fat and cholesterol that was in the butter. Olive oil itself does not lower cholesterol, as monounsaturated fatty acids do not raise or lower cholesterol. As a result it is not a good idea to freely pour olive oil into salads, over vegetables or to dip white bread into it, transforming it into an oil-dripping calorie bomb.

Olive Oil No Magic Elixir

Olive Oil No Magic Elixir

Olive oil can be compared to rocked fuel: it is a high calorie food, and if you plan to go on a long distance bike excursion across the country, you’ll clearly need more fuel than if you are working at a sedentary job in an office. Olive oil should be used like salt. It is a condiment, and choosing extra virgin olive oil in a spray pump gives us a boost of flavor. The real beneficial food sources in the Mediterranean diet are fruit, vegetables, beans, small amounts of whole grain and omega-3 rich fish. Flavonoids and antioxidants in the fruit and vegetables are some of the main players, but lifestyle and genetics may also play a role.

More about fats, the good, the bad and the ugly here: http://nethealthbook.com/health-nutrition-and-fitness/nutrition/fat-good-bad-fatty-acids/

Reference: The Medical Post, February 2, 2007, page 17

Last edited November 2, 2014

Feb
01
2007

Lycopene Benefits Backed By Science

By | Cancer, Diabetes, Health, Heart Disease, Nutrition, Osteoporosis

Lately a lot of attention has been directed to the health benefits of vegetables and fruit. Vitamin C has long been an accepted household term, and nobody questions the benefits. Newer buzz words are the terms “bioflavonoids” and “antioxidants”. Some products are aggressively marketed extolling the above named beneficial substances, but often the consumer is left mildly bewildered by exaggerated claims. Often the sale prices of these miracle foods are as lofty as the bold statements that go along with them.
For any shopper it is important to know that some of the most beneficial foods are not high priced items, but very common staples. Take tomatoes, for instance. They are a significant source for the substance lycopene, which lately has received a lot of attention. Lycopene and its dietary sources as well as its benefits have been researched world wide, and the results are now in. It is responsible for the red color in fruit or vegetables, such as tomatoes, and its isomeric form 5-cis-lycopene is the most stable form having the highest antioxidant properties. Common dietary sources are tomatoes, watermelons, pink guava, pink grapefruit, papaya, apricot and other fruit. In the Western diet tomato-based foods account for about 85% of dietary sources of Lycopene. Studies have shown that lycopene is more efficiently absorbed from processed tomato products compared to raw tomatoes. Once it is absorbed it is distributed throughout the body. The highest levels showed up in the testes, the adrenal glands, prostate, breast and liver.
Research going back to 1995 showed an inverse relationship between the consumption of tomatoes and the risk of prostate cancer. A follow up publication in 1999 showed that the same inverse relation of lycopene intake and cancer also included breast, cervical, ovarian, liver and other organ sites. Further studies have followed these initial publications, and the great majority of them suggest that an increased intake of lycopene showed an association with a significant reduction in the risk of many cancers.
Coronary heart disease and lycopene benefits were also examined. The strongest population based evidence comes from a multi center case control study in Europe (EURAMIC). 662 Cases and 717 controls were recruited from 10 different European countries, and there was a significant relationship between levels of lycopene in fatty tissue and the risk of myocardial infarction. Lower lycopene levels were associated with a higher risk of heart attacks.Lycopene was also shown to decrease levels of oxidized LDL (LDL or low density lipoprotein is known as the “bad” cholesterol). Another small study showed that lycopene was reducing total cholesterol levels and as a result was lowering the risk of coronary heart disease (CHD).
The list of benefits does not end here: the dietary oxidant reduces oxidative stress and levels of bone turnover markers, meaning that it may contribute to the bone health, especially reducing the risk of osteoporosis in postmenopausal women.

Lycopene Benefits Backed By Science

Lycopene Benefits Backed By Science

For people with mild hypertension (high blood pressure), consumption of lycopene resulted in significant reductions of systolic and diastolic blood pressures.
Infertility in males was significantly helped by lycopene intake. In a study infertile man received 8 mg lycopene per day in capsule form. Laboratory tests confirmed an increased sperm density along with functional sperm concentration and mobility. This treatment protocol with lycopene supplementation resulted in a success rate of 36% pregnancies in their partners.
Pregnant women with pre-eclampsia who were treated with lycopene supplement significantly improved, which was shown by decreased diastolic blood pressure, the reduction of pre-eclampsia and a decrease of intrauterine growth retardation, resulting in a healthier mother and baby.
Future research is pending surrounding lycopene in metabolic and inflammatory diseases and in its role of possibly preventing neurodegenerative diseases such as Alzheimer’s disease. Other inflammatory conditions such as arthritis and emphysema will likely also be shown to benefit from lycopene. Preliminary data has already indicated this.
The Food and Drug Administration (FDA) of USA has recently approved lycopene as a safe “natural coloring agent” and a Generally Recognized as a Safe (GRAS) component. The Department of Nutritional Sciences , Faculty of Medicine, University of Toronto, c/o Dr. A.V. Rao et al. who completed this meta analysis of the recent literature have recommended that we all consume a regular daily lycopene dose in our food and supplements as part of our diet for good health.

More info about lycopene and prostate cancer: http://nethealthbook.com/news/lycopene-reduces-prostate-cancer-risk/

Reference: The Whitehall-Robins Report, December 2006, Volume 15, No.4

Last edited November 2, 2014

Feb
01
2007

Nutritional Research Possibly Biased

By | Nutrition

Influential articles about nutritional research are widely publicized. What is not so well known to consumers is the fact that a number of the research is funded by industry, which introduces test bias into the results, which can have far reaching implications. These results influence dietary recommendations, the department of public health, or regulations by the Food and Drug administration. The articles are widely publicized and also influence consumers’ choices.
Dr. Daniel Ludwig, author and director of the Optimal Weight For Life program at the Children’s’ Hospital in Boston, which is a Harvard medical institution, looked at 206 interventional and observational studies as well as scientific reviews. All of them were related to milk, soft drinks and juices. All the material was published between 1999 and 2003. The category was chosen, because these drinks are widely consumed by children and adolescents. There has been a considerable amount of controversy about the health risks and health benefit of these drinks. The soft drink industry is large and highly profitable, and the authors concluded that in this environment scientific bias could likely occur.
Of the 206 studies only 111 submitted the source of financial sponsorship. One third of them had mixed sponsorships, half of them were not sponsored by the industry and one in five was industry sponsored. Results showed, that industry sponsored research was 4 to 8 times more likely to be in favor of the companies’ products than those where the studies had independent financial funding.

Nutritional Research Possibly Biased

Nutritional Research Possibly Biased

During the study period the researchers who declared the source of funding or a conflict of interest rose from 50 to 80 %.
Dr. Ludwig and his team suggested that there is the potential to public health harm, unless there is increased government funding available for nutritional research through a peer review process such as that at the National Institute of Health.

More information about sugar substitutes: https://www.askdrray.com/yes-there-are-healthy-sugar-substitutes/

Reference: BMJ 2007; 334:62, 13 January

Last edited November 2, 2014

Jan
01
2007

Prevent Type 2 Diabetes With Diet And Moderate Exercise

By | Diabetes, Hormones, Nutrition, Prevention

The almost epidemic proportions of Type 2 diabetes has raised grave concern, but healthcare providers agree that adult onset diabetes is not just a disease that strikes out of the blue. Patient education remains a basic concern, as there are factors that predispose people to the disease. There are known risks for those who are overweight and when inactivity is the main lifestyle. Family history plays a role and ethnic origin can make the patient more vulnerable to the development of diabetes. Population groups at risk are African-Americans, Native Indians, Pacific Islanders, Hispanic-Americans and Asian-Americans. There is a stage which is known as pre-diabetes. The blood glucose level is elevated, but it is not high enough that the condition is labeled as a full-blown diabetes. The good news is that with screening of the blood sugar the first signs of elevation can be detected with a blood sugar monitor at home. This way this condition can be picked up and the progression to diabetes can be avoided with proper diet and exercise.

In a large study of the Diabetes Prevention Program people who lost 7 % of their body weight and exercised 150 minutes per week cut their risk of developing type 2 diabetes by 58%. For patients in the age group over 60 the risk was reduced by 70%.

Prevent Type 2 Diabetes With Diet And Moderate Exercise

Diabetics need exercise and a proper diet

It is important that all persons who are at risk are screened. The laboratory tests involve fasting overnight, after which the fasting glucose levels are checked. A glucose tolerance test is the second test. After overnight fasting the patient receives a glucose-rich drink and blood sugar levels are monitored afterwards to establish how well the glucose is metabolized. These tests are inexpensive and are usually covered by health insurance.

More information about:

1. Diabetes type 2: http://nethealthbook.com/hormones/diabetes/type-2-diabetes/

2. Exercise (fitness): http://nethealthbook.com/health-nutrition-and-fitness/fitness/

Reference: Dec. 25, 2006/January 1, 2007 issue of U.S. News & World Report, page 55

Last edited November 2, 2014

Dec
01
2006

Cinnamon And Multivitamins May Boost Fertility

By | Health, Nutrition, obstetrics, Vitamins and supplements, Women’s Diseases

Prenatal vitamin supplements are the norm, as folic acid has been known to play a role in the prevention of neural tube defect. Generally they are taken once pregnancy has been confirmed.
Dr Jorge Chavarro from the department of nutrition at the Harvard School of Public Health in Boston pointed out, that multivitamin supplementation has its place earlier than just after the pregnancy test has become positive. In one of the largest studies involving 18,000 married pre-menopausal women, regular use of multivitamin supplements were associated with a decrease of infertility. The key is in the regular use. Women who took two multivitamin tablets per week had similar infertility rates as women who did not take supplements at all. Those who took 6 or more multivitamins had a 40% lower risk of anovultation, a condition where no eggs are released by the ovaries.
Most of the women were Caucasian between the ages 24 and 42.
The importance of nutrition is coming increasingly into the forefront in reproductive medicine. One condition known as polycystic ovary syndrome (PCOS) is often a reason for infertility. It is one of the red flags that point to the condition of insulin resistance, and it manifests itself in menstrual irregularity and higher levels of androgens, often showing as increased facial hair. As the metabolism is headed for trouble, diabetes, high blood pressure, high cholesterol and heart disease would tend to develop.
Researchers at Columbia University in New York conducted a pilot study to see if insulin sensitivity in women with PCOS could be improved. Cinnamon, a well-known spice, has been known to have a favorable effect on the insulin response of the body. Researchers found that eight weeks of treatment with cinnamon extract significantly decreased fasting glucose and insulin resistance in women with polycystic ovary syndrome.

Cinnamon And Multivitamins May Boost Fertility

Cinnamon And Multivitamins May Boost Fertility

Dr. Jeff Wang who conducted the study reported that no side effects or adverse reactions were reported throughout the study period. If large-scale prospective studies confirm these findings, then recommending cinnamon as a dietary factor may be a simple, inexpensive lifestyle change that can be easily followed. Reducing insulin resistance is a key to improve the overall health status in patients with PCOS, and it ties in with reproductive health benefits as well.

More information about infertility: http://nethealthbook.com/womens-health-gynecology-and-obstetrics/infertility-php/

Reference: The Medical Post, November 14, 2006, page 32

Last edited November 2, 2014

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Nov
01
2006

Eat Your Salad Greens, But No Spinach

By | Cancer, Heart Disease, Infectious Disease, Nutrition

Spinach has traditionally been regarded as a healthy, green leafy vegetable and a valuable source of vitamins and minerals, in particular iron. The tedious chore of cleaning the tender greens and removing soil and sand traces has been taken care of by packinghouses. As a result, the consumer could purchase ready to eat spinach in plastic bags. These greens were a welcome ingredient for spinach salads or other dishes.
Lately all spinach has been recalled from the world’s largest producer of organic produce. Natural Selection Food has recalled a total of 34 brands that were distributed nationwide, and some of which were available also in Canada. Consumers are still being warned not to eat fresh spinach from the U.S., even though there have been no reported cases of ill effects or diseases in Canada itself. Problems have surfaced in September in form of food borne illness in the U.S. The culprit seems to be contamination with E. coli 0157:H7. Food borne illness can be serious. So far there have been 109 cases of illness in the U.S. and possibly two deaths. The worst affected area so far is Wisconsin, where 29 illnesses were reported and one person died of the disease.
As a result of this alert, salad mixes that contained a variety of greens including spinach leaves have also been pulled from the shelf. It should be mentioned that washing the spinach leaves does not make it safe to consume, as the E.coli bacteria stick to the leaves.
While it seems good-bye to spinach leaves for now, it remains important to eat your greens. Researchers at University of California in Los Angeles and colleagues at Louisiana State University analyzed the salad consumption based on the intake of salad, raw vegetables and salad dressing on 9,406 women and 8,282 men. The researchers also found from their studies that daily consumption of salad and raw vegetables is not the norm in any population group and even less prevalent among African Americans.

Eat Your Salad Greens, But No Spinach

Eat Your Salad Greens, But No Spinach

There were data from lab tests on serum nutrient levels, and it showed that consumption of salads was positively associated with above-median serum micronutrient levels of folic acid, vitamin C and E, lycopene, and alpha carotene and beta carotene. All of these nutrients are important for healthy daily functioning. They are weapons that help fight infection, heart disease and cancers. The consumption of salad and raw vegetables remains the most effective strategy for increasing the intake of important nutrients.

Reference: The Medical Post, October 3, 2006, page 21

Here is a follow-up on this story: Apparently the outbreak was caused by a wild boar and by a nearby cattle field:  http://www.foodsafetynews.com/2009/09/meaningful-outbreak-7-dole-spinach-e-coli-outbreak/#.VFaWXPTF-88

More information about food safety: http://nethealthbook.com/health-nutrition-and-fitness/nutrition/food-safety/

Last edited November 2, 2014

Nov
01
2006

Body Can Fight Weight Loss

By | Nutrition, Obesity, Weight loss

Embarking on a weight loss program needs long-term commitment and persistence. Many dieters have experienced the yo-yo effect of good initial results in losing weight, after which the weight loss stopped, and gradually the weight was gained back. Often dieters blame themselves for their lack of success or are criticized for a lack of self-control.
The “plateau effect” has been discussed and documented before, and now an Australian study has found that “it is not just you”. After initial success and weight loss the human body is designed to strongly resist attempts to lose weight. Dr. Neil King from Queensland University of Technology does research on appetite regulation and energy balance. He conducted studies on groups of people who were overweight and obese people. He found that weight loss from exercise and calorie restriction stops at a certain point, and this plateau remains firmly in place for a prolonged time, despite continuing dieting and exercise.

In the first study 30 obese men and women from Britain took part in a 12-week, laboratory based exercise program in which they exercised five times a week. The second study observed the weight loss in 200 Australian men who were enrolled in a commercial weight loss program, which involved both an exercise program and dietary advice. Although both groups followed different plans, their weight loss still plateaued. The first group averaged a loss of 3 kg during the first 8 weeks, and weight loss in the next 4 weeks was markedly reduced (0.7 kg). The second group had a variable pattern of weight loss, but it, too, showed a plateau.

Body Can Fight Weight Loss

Body Can Fight Weight Loss

Researchers believe that the human body is designed to cope with famine. As a result there is a built-in mechanism responsible for weight loss resistance. It may be a source of frustration to people on a weight loss program in a society where there are no food shortages, but it is meant to be a lifesaver in times when there was a shortage of food.
For the person who wants to lose weight it involves taking a closer look at the caloric output. Longer exercise times, higher intensity or cross training can combat the plateau effect, but patience is also needed along with the determination to carry on with the program.

More information about weight loss: http://nethealthbook.com/health-nutrition-and-fitness/weight-loss-and-diet/

Reference: The Medical Post, October 10, 2006, page 19

Last edited November 1, 2014

Nov
01
2006

Diverticulitis Associated With Obesity

By | Gastrointestinal Disease, Nutrition, Obesity

Medical textbooks used to describe acute diverticulitis as a disease that was mostly seen in adults over 50 years of age. Researchers at the University of Maryland Medical Center have assessed the medical records of 104 patients ages 22 to 88 years with the condition of diverticulitis diagnosed between 1999 and 2003. 56 patients (54%) were age 50 or younger, and the remaining 48 (46%) were over 50. The researchers found that a significantly higher proportion of patients (88 %) with abdominal obesity were present in the younger age group with diverticulitis.
Acute diverticulitis is a condition characterized by the chronic inflammation of sacs in the intestinal tract. The condition causes constipation and severe abdominal pain. It is usually related to a low fiber diet containing refined carbohydrates or processed foods.
Dr. Barry who was leading the study observed that the younger the patients with diverticulitis are, the more obese they are likely to be.

Diverticulitis Associated With Obesity

Diverticulitis Associated With Obesity

Also, he found the younger they are when they get the disease, the more likely they will get recurrent attacks, and he sees the most important point in diverticulitis prevention is a change to healthy eating habits without over-processed food from fast food outlets.

More information about diverticulitis: http://nethealthbook.com/digestive-system-and-gastrointestinal-disorders/diverticulitis/

Reference: The Medical Post, October 10, 2006, page 1 and 60

Last edited November 1, 2014