Jan
24
2019

Death By Fried Chicken

By | Cancer, Cardiovascular disease, food, heart attack, Stroke

A new study has shown that when you eat one piece of fried chicken per day, you risk “death by fried chicken”.

Details of a postmenopausal women study

This was a study by the same group that published the Women’s Health Initiative. Participants were asked whether they would take part in a dietary prospective study published in the British Medical Journal January 2019.

93,676 women were part of the study, and researchers observed them for an average of 17.9 years. There were 9,320 deaths from cardiovascular disease, 8,358 deaths from cancer, and 13,880 deaths from other causes.

Here are the results for all cause mortality

Total fried food consumption: 1% risk for less than 1 serving per week

3% risk for 2 to 3 servings per week

3% risk for 3 to 6 servings per week

8% risk for eating at least 1 serving per day

Fried chicken consumption:     6% risk for less than 2 servings per month

12% risk for 2 to 3 servings per month

13% risk for at least 1 serving per week

Fried fish/shellfish consumption: 7% risk for at least 1 serving per week

Risk factors for cardiovascular mortality

The following are the risk factors for cardiovascular mortality of the consumer of fried chicken or fish.

8% risk for less than 2 servings per month

17% risk for 2 to 3 servings per month

12% risk for at least 1 serving per week

Fried fish/shell fish consumption.: 13% risk for at least 1 serving per week

Cancer mortality from fried foods was not that clear. Here are two interesting statistics.

Cancer mortality for fried fish consumption

-8% risk for less than 3 servings per month.

Other fried food consumption:

+9% risk for less than 2 servings per month.

Discussion of the results

This has been an extensive prospective study involving a large amount of postmenopausal women from the Women’s Health Initiative. In addition the observation time was very long, namely an average of 17.9 years. These properties give the study an unusually strong statistical significance. The following features are noteworthy.

Comparing fried chicken with fried fish/shell fish

Fried chicken, prepared in the US in 40 different states has a risk of 17% to cause a heart attack or a stroke for persons that consume two or three servings per month.

Fried fish/shell fish only has a risk of 13% when eaten once per week of causing a heart attack or stroke.

Comparison between this study and a Spanish study

The authors discussed that their findings are different from a Spanish study that found no increased cardiovascular risk of deep fried chicken. They pointed out that in Spain the oil used for deep-frying is usually olive oil while in the US it is mostly corn oil. Frying causes the process of oxidation and hydrogenation, which leads to a loss of unsaturated fatty acids. Linoleic acid experiences a reduction and a corresponding trans fatty acid formation. The end result is that the concentration of trans linoleic acid increases. This may be an important factor increasing the risk of heart attacks and strokes in the US where the use of corn oil is common for deep-frying, but not in Spain where chefs use olive oil instead. Olive oil is a monounsaturated fatty acid and stable with cooking.

Comparison between fried fish consumption and other fried food

There was a less than average cancer risk (-8%) when fried fish consumption was compared to other fried food consumption. With other fried food consumption a +9% risk for cancer mortality was found. This is a spread of 17%. Frying fish, which contains omega-3 fatty acids may neutralize the cancer causing effect from frying other foods. Omega-3 fatty acids are natural anti-oxidants. This may be the reason why fried fish/shell fish did not cause excessive cancer deaths.

Other considerations

The authors did not delve into the quality of the chicken meat in the US fast food industry. It is known that chicken farmers use an arsenic compound (“3-nitro”) for faster growth and prevention of infections among crowded living conditions of the birds.  3-nitro is a carcinogen, which contributes to cancer toxicity in humans as non-organic chicken meat contains it.

It likely would be wiser to buy organic chicken and pan-fry it in olive oil. Alternatively you may want to BBQ chicken at a low temperature.

Death By Fried Chicken

Death By Fried Chicken

Conclusion

Buying deep fried chicken from a fast food outlet is a favorite for many Americans. This study shows clearly that it is deep fried chicken that causes the highest heart attack and stroke mortalities in the US. But “death by fried chicken” does not have to be. The problem may be that the kitchen used the wrong fats to prepare deep fried chicken. In a similar study in Spain there was no increase in cardiovascular risk when cooks used olive oil for deep-frying chicken.

Alternative to buying fast food

The small extra step of buying organic chicken and preparing it at home in a frying pen with olive oil will pay big health dividends. Similarly, fish and shellfish prepared in olive oil at home will also not have any risks for you. A lot of people rave about the convenience of buying deep fried food and in this case deep fried chicken. This article, however, shows that it is time that we take at least some control back in our own hands to prepare healthy food for our families and ourselves. It is a poor trade to choose convenience over health!

Jul
01
2007

Estrogen In Early Menopause Saves Lives

By | Alzheimer’s disease, Anti-aging medicine, Heart Disease, Hormones, Obesity, Stroke

Introduction

In the June 21, 2007 issue of the New England Journal of Medicine a randomized study of  8.7 year duration the question was examined whether postmenopausal women following hysterectomy would have a higher risk with estrogen replacement therapy than controls who did not take estrogen therapy. The lead author was Dr. JoAnn E. Manson of Harvard Medical School and the method chosen to examine the heart disease risk was a CT of the heart to measure calcium  in plaque of coronary arteries.

Previous research had shown a good correlation of calcification of coronary arteries with the degree of hardening of coronary arteries as shown in this image.

Various doses of estrogen were used and overall there was a reduction of calcium scores in all of the groups ranging from 22% to 31% when the calcium scores of the estrogen treated patients were compared to the non treated controls. This translated into 36% to 64% less heart attack rates when the treated groups were compared to the controls not treated with estrogen.

Discussion regarding estrogen replacement therapy

The discussion regarding estrogen replacement therapy following menopause is not finished, but women can be reassured that the cardiovascular risk appears to not be as straight forward as research seemed to suggest in the recent past. There likely was a bias in these retrospective studies and the present prospective study is much stronger having been done over 8.7 years following randomization. As this study was done on patients who had previous hysterectomies, there is no concern about uterine cancer. Breast cancer risk was not examined in this study.

Estrogen In Early Menopause Saves Lives

Estrogen In Early Menopause Saves Lives

The authors concluded that low dose estrogen replacement with 0.625mg of conjugated estrogen (Premarin) appears to be safe and has the most beneficial effect on coronary artery health when taken between the ages of 50 and 59. However, the authors also cautioned that estrogen would have multiple effects and may have negative effects on the cardiovascular system in some other way.

Reference: N Engl. J Med. 2007;356:2591-2602

Comment

Comment on Nov. 18, 2012:  The real problem of this study is that the authors took the wrong “hormone replacement”, namely Premarin, which is a non-bioidentical estrogen concoction from horses, which translates into an ill fitting key. The human body’s estrogen receptors do not fit this “key”. The proper experimental set-up would have been to use bio-identical estrogen hormones, which are usually given as a cream and would be the perfect key for the human estrogen receptors. This would have to be balanced with bio-identical progesterone to achieve a balance the way it is in a younger woman. We know from other studies that this prolongs life by preventing coronary artery disease, prevents Alzheimer’s disease, prevents strokes and does not cause uterine cancer or breast cancer. Women on bio-identical hormone replacement also retain their normal sex drive.

See this chapter on menopause in the Net Health Book.

Apr
01
2004

Breast Cancer And Miscarriages; Fear-Mongering Debunked

By | Cancer, Women’s Diseases

For many years there were conflicting reports about the emotionally charged topic of whether miscarriages (=spontaneous abortions) or induced abortions (also simply known as abortions) would lead to an increased risk for these women later in life. The problem was that the studies could not be directly compared because they differed in size, in age group and whether the women had one or more children or none.

The studies also differed in respect to whether they were prospective or restrospective. In this context a prospective study is one where it was known at the outset before the women developed breast cancer whether or not there was a history of a spontaneous or induced abortion in the past. A retrospective study would be one where a group of women with established breast cancer would be asked retrospectively whether or not they had a history of abortions (spontaneous or induced).

It turns out that the discrepancies between these studies in the past were largely because of the significant difference between the data of the unreliable retrospective studies and the very reliable prospective studies.

On March 27, 2004 the Lancet reported about a study that had been undertaken by the Collaborative Group on Hormonal Factors in Breast Cancer (seat of the Secretariat in Oxford, England). This study involved hundreds of scientists and clinicians from the major Cancer Clinics around the world who gathered the world-wide epidemiological evidence about breast cancer and pooled the data regarding 53 studies from 16 countries.

Breast Cancer And Miscarriages; Fear-Mongering Debunked

Breast Cancer And Miscarriages; Fear-Mongering Debunked

A total of 83,000 women with breast cancer around the world had been included in this study. The data was separated into sub-categories. For instance, 44,000 women were included in the prospective branch of the study and 33,000 in the retrospective branch. The data was carefully controlled for the factors mentioned above and many other differences to ensure that the data could be compared (rules of evidence-based medicine).

The surprise finding was that there was no statistical difference regarding the risk for developing breast cancer in the prospective branch of the study between the group of women who never were pregnant, those who had one or more children and those who had miscarriages or abortions in the past. However, the retrospective studies reported a higher incidence of breast cancer because of an observer bias. The researchers and clinicians concluded that the data of the restrospective studies were unreliable because they were not carefully controlled and there likely was more reliable reporting of the women who had developed breast cancer than the control groups who likely underreported their histories thus resulting in misleading conclusions.

Summary: Women do not have a higher risk of developing breast cancer following spontaneous or induced abortions. Forget all of the fear-mongering that you may have heard in the past in the popular press.

More information about causes of breast  cancer: http://nethealthbook.com/cancer-overview/breast-cancer/causes-breast-cancer/

Lancet 2004; 363: 1007-16.

Last edited October 26, 2014