Aug
17
2019

How Healthy Is Food From The Supermarket?

By | Cancer, Cardiovascular disease, cholesterol, Diabetes, fiber, food, heart attack, lifestyle, milk, Nutrition, Obesity, omega-3 fatty acids, organic food, Processed food, Stroke, sugar

I am asking the question here: “how healthy is food from the supermarket?” We tend to assume that food we buy at the supermarket would be safe to eat. Think again, because below I will explain why it is NOT safe.

The “dirty dozen”

You may or may not have heard about the “dirty dozen”. The Environmental Working Group (EWG) is a non-profit organization that monitors fruit and vegetables for insecticide residues. For 2019 they have determined these unhealthy dozen of fruit and vegetables: strawberries, spinach, kale, nectarines, apples, grapes, peaches, cherries, pears, tomatoes, celery, potatoes and peppers (hot and bell peppers). Yes, you counted right, this “dozen” actually consists of 13 items.

When I want to buy any of these fruit, I strictly get fruit and vegetables, which are organic. If this is not available in the regular supermarket, I go to the health food store and buy organic fruit and vegetables there. Local farmers’ markets also offer organically grown produce. Every year the EWG brings out an up-to-date list of the dirty dozen. If an item is not on this list, you can assume that it is safe to eat.

Sugar and too many starches are the next problem

How healthy is food from the supermarket? We said we wanted healthy food. Unfortunately ample consumption of sugar and starchy foods end up as belly fat and also as atheromatous deposits in the arteries. I do not eat bread unless it is 100% rye, but then only 1 or 2 slices occasionally. I do not eat potatoes, rice or pasta. Those who love pasta can eat the pasta-look-alike, called shirataki, which is made from the glucomannan root (also known as konjac root). The carbs here are bound to fiber, which digest a lot slower than regular pasta. So, this means that you are bypassing the section in the supermarket where they sell muffins, donuts etc.

Processed foods

In the center of the supermarket you find all kinds of processed foods. They are usually full of sugar, salt and unhealthy fats (hydrogenated fats). People who eat a lot of processed foods are more prone to get heart attacks, strokes and may even come down with cancer. It is not the kind of food that I want. Instead I like whole foods like organic apples, berries and raw or cooked vegetables.

Fish section

I like salmon, sole, cod, halibut, trout, mussels, shrimp and squid. But I am careful not to load up on the big predator fish like tuna. One has to be careful about methylmercury content in fish. I reviewed fish, mercury contamination and the benefits in this link.

As this link shows, there are low, medium and high methylmercury contaminated fish. The higher the fish is in the predator chain, the higher the methylmercury content. This is of particular concern for pregnant women as mercury is toxic for the fetal brain tissue. But they can consume low mercury fish and shellfish, like mackerel, herring, wild salmon, shrimps or clams. I figure, what’s good for women who are pregnant is good for other people. As a result, I limit my fish meals to the low methylmercury contaminated fish category.

How healthy is food from the supermarket – Meat section

Now your shopping trip becomes problematical. There has been news from the Word Health Organization at the end of 2015 that red meat and red meat products are class 1 carcinogens.

This would mean that you may come down with colorectal cancer, if you consume red meat and red meat products regularly. This is when I stopped eating red meat and red meat products like prosciutto. Unfortunately this warning includes pork, lamb and all sausages as well. In the meantime further research has shown that antibiotics that are fed to beef before they are slaughtered get into the meat and change the human bowel flora when red meat or red meat products are consumed.

Trimethylamine N-oxide (TMAO)

There is a change in bowel flora that causes chemical reactions in the gut with the consumption of beef and eggs. Beef contains carnitine, which can lead to the production of TMAO (trimethylamine N-oxide).

Egg yolk contains choline, which also raises TMAO levels in the blood.

In the following study 113 healthy men and women consumed either a meat diet (beef), white meat diet or protein from non-meat sources. After one month the beef group had triple the amount of TMAO in their blood compared to the other two diets.

Interestingly, when the diets were switched the TMAO levels normalized again in the former beefeaters, when consuming white meat or protein from non-meat sources.

What meat am I shopping for?

I recommend not to eat beef more often than once per week and to eat only grass-fed beef. I eat organic chicken and ground turkey breast meat from health food stores (the turkeys are NOT fed antibiotics). Otherwise I eat seafood, cheese from non-recombinant growth hormone milk. This means that I only buy European import cheese or Canadian cheese. In the US you have to ask for organic milk and organic milk products.

The deep frozen section

I look for deep frozen vegetables, fruit, and fish as well as meats. As vegetables are quickly readied for the freezer, their vitamin content can be higher than that of a vegetable that has spent 8 days in transit from the field to the produce department. The deep frozen section also gives you access to a lot of variety. You’ll be able to enjoy some organic strawberries, even when they are not in season. Read the labels, as some fruit have been packaged with sugar syrup. Look for the varieties, where no sugar has been added. The frozen section also contains some highly processed items: deep-fried foods and dessert selections, which have nothing to do with health, so I avoid them.

Canned foods

Canned foods can be useful, as long as you are dealing with fruit that are canned in their juices and not in sugar syrup. The vegetables are less valuable in vitamins than their deep frozen counterparts. Watch out for varieties, where less salt is added. The label will tell you ”low sodium”. Also pay attention to the cans. Those that are not lined with BPH have a label that emphasizes this. You can avoid this by buying canned food in glass jars, such as tomato sauce.

Cosmetics

You will not have to navigate all the aisles, except for your cleaning products and your cosmetics. These have their own problems: lots of cosmetics contain Parabens. Leave them on the shelf, and be aware that some cleaning products can be hazardous too. Pick environmentally friendly, non-toxic products!

Staples you need

There are some staples, which you will also require: olive oil, some olives, almonds or macadamia nuts (preferably raw). The one cereal product, which is valuable will be coarse rolled oats and some pot barley. Both varieties carry a lot of fibre, which makes them very useful food staples. Avoid the “quick cooking” or “instant” oats. Due to the processing, the carbohydrates are absorbed a lot faster and consequently trigger a higher insulin response.

Drinks

You will wonder about drinks next. Having passed the colas, ginger ales and other sugar pops you may eye the diet drinks. Beware of drinks sweetened with aspartame. There is increasing evidence that phenylalanine (brand names: Aspartame, NutraSweet and Sweet’N Low) is not a “harmless” sweetener. Newer research has shown that it can cause gastroesophageal reflux (=GERD) and migraine headaches. Stevia, a sweetener from a South American plant, does not have harmful effects. Stevia is safe to use, as it does not cause an insulin response. You are best served with mineral water, purified drinking water, herb teas, tea or coffee. Fruit juices do have vitamins and minerals, but they are high in sugar causing an insulin release.

What is in fruit juices?

You would not really eat 3 large apples in one sitting? Probably not! So why insist on drinking 8 oz. of apple juice? You’ll ingest all the sugar and forgo the fibre! You also notice that a lot of fruit juices have been mixed with sugar, water, artificial flavor, some color, and as an apology some vitamin C has been added. They are appearing on the shelves as “a good source of vitamin C”. In reality we are dealing with flavoured, colorful sugar water. Use your own judgement, whether you want to spend your dollars on this selection!

Power bars, snacks

In the aisle adjacent to the pop you will very likely encounter a huge selection of convenience and snack foods. They have several things in common: you have met them on TV, some will be high in starches and fat (chips), others will be high in starches, sugar, and fat (cookies, donuts, cream pastries), and we are dealing with trans fats. Do take time to read the listed ingredients, and then decide, whether you and those who eat in your household deserve nutritional garbage. 

How Healthy Is Food From The Supermarket?

How Healthy Is Food From The Supermarket?

Conclusion

We have now completed our round trip in the supermarket. You may still be in mild shock, noticing that “healthy” foods are not the general rule on the shelves. When we buy vegetables and fruit we have to be aware of the “dirty dozen”, which is contaminated with insecticides. We will not buy anything on that list, but buy instead the organic version. You may have to go to the health food store to get these items. Red meat and red meat products produce carcinogens in the human gut. It seems to stem from antibiotics that are used in beef farms and chicken farms. With chicken I buy organic chicken. With beef you need to be more careful and reduce the consumption to once per week and eat only grass-fed beef.

It is tricky to buy healthy food from the supermarket

Much of the bakery section is useless. It consists of empty starch that is digested into sugar and leads to an insulin response. I avoid the processed food section, which contains unhealthy ingredients. Fish is great as long as it does not have too much methylmercury in it. Deep frozen foods may be useful.

Shopping for healthy foods from the supermarket has become more complicated than it was in the past. I only select healthy items and supplement the rest from the health food store. This way I get what I need and avoid the pitfalls of merchandise, which is not beneficial.

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Jun
29
2019

Both White Meat And Red Meat Elevate Cholesterol

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

A study from the American Journal of Clinical Nutrition showed that both white meat and red meat elevate cholesterol. This was a randomized controlled clinical trial. Many observational studies in the past showed that red meat consumption could elevated LDL cholesterol values and this increased cardiovascular disease. Many study authors have recommended to get away from the dangers from red meat by switching to white meat from poultry .

However, this study pursued this question in more detail. It questions whether it is true that white meat is safer from a cardiovascular risk point of view. It also studies the effects on cardiovascular risk when switching to vegetable protein (vegan or vegetarian diets). In addition, the researchers assessed the effects of low or high saturated fat on LDL cholesterol levels.

Design of the study

Researchers from the Children’s Hospital Oakland Research Institute, Oakland, CA conducted the study. They rotated participants through three different diets for 4 weeks each with a washout period of 2 to 7 weeks in between where they ate their usual foods. The diets were as follows. The first tract consisted of food with high-saturated fatty acids (high SFA): red meat; white meat and non-meat. The second tract contained low-saturated fatty acids (low SFA): red meat, white meat and non-meat. The researchers determined the cardiovascular risk of these 6 diets by measuring triglyceride levels, LDL cholesterol levels apo B levels ad additional factors.

Results of the study

LDL cholesterol: 2.64 mmol/L for red meat, high SFA; 2.61 for white meat, high SFA; 2.46 for non-meat, high SFA.

The LDL cholesterol values for red meat, low SFA were 2.35; for white meat, low SFA were 2.38 and for non-meat, low SFA were 2.22.

The message from this part of the trial is that it did not matter whether you ate red meat or white meat, the LDL cholesterol was still high, particularly when combined with high saturated fatty acids. Lean cuts of red meat and of chicken (no skin) result in lower LDL cholesterol readings. The very best LDL cholesterol results came from non-meat protein like vegetables. This was particularly so when the vegetables contained only low-saturated fatty acids.

There were many more results in the study, but it would be inappropriate to list them all for this overview here. For those interested in it, here is the link where more detail is discussed. Here is a blog where I discussed how to lower cholesterol.

Discussion of the study that found that both white meat and red meat elevate cholesterol

For years physicians have recommended to exchange some of the red meat (beef, pork and lamb) with white chicken or white turkey meat. This was based on poorly designed observational studies. Now the investigators of a randomized controlled clinical trial have shown that the old assumptions were incorrect. White meat raises LDL cholesterol just as much as red meat does. But protein from vegan or vegetarian diets lowers LDL cholesterol significantly. In addition the effect of saturated fatty acids raises LDL cholesterol significantly in all of the different diets. The researchers pointed out that L-Carnitine from red meat is metabolized by gut bacteria into trimethylamine-N-oxide (TMAO). This is a substance that has two effects on the body: it causes increased atherosclerosis (hardening of arteries) and also causes cancer of the colon.

Both White Meat And Red Meat Elevate Cholesterol

Both White Meat And Red Meat Elevate Cholesterol

Conclusion

This randomized clinical trial clearly showed that red meat and white meat cause the same elevation of LDL cholesterol and other cardiovascular risk factors. In contrast non-meat protein from a vegetarian or vegan diet lowers cholesterol. Also, high-saturated fatty acid food elevated cholesterol while low-saturated fatty acid food lowers cholesterol. For this reason, choose the leanest cut, if you eat red or white meat. Don’t be afraid to have a meatless day once or more often during the week. It will help you to equilibrate your cholesterol level. Keep in mind that your gut bacteria metabolize red meat into trimethylamine-N-oxide (TMAO). This is a substance that has two effects on the body: it causes increased atherosclerosis (hardening of arteries) and also causes cancer of the colon. For this reason keep your red meat consumption low, which prevents colon cancer, heart attacks and strokes.

May
11
2013

Changes Of Gut Bacteria Can Cause Heart Attacks

By | Cancer, Health, heart attack, Heart Disease, Prevention, Stroke, Vitamins and supplements

The recent news of gut bacteria possibly being involved in causing heart attacks (see details below) sounds pretty outrageous. In order to make this more understandable, we need to start backtracking how bacteria end up in our gut and what they are doing there.

Gut bacteria in our bowels at various stages in life

Even among infants there is a huge difference in the composition of the gut flora depending on whether the baby was vaginally delivered, born by Cesarean section or prematurely born and nursed in an intensive care unit for a prolonged period of time.

When we are grown up, it depends on where we live on our planet as to what type of gut flora we have. A 2011 study of the bacterial composition of stool samples in Europe versus Africa showed that the European microbiome in the colon was typical of the Bacteroides enterotype, whereas the African microbiome was dominated by the Prevotella enterotype. Other studies have shown that the type of diet we eat causes us to harbor different types of gut flora. A person eating a more vegetarian diet will have a Prevotella enterotype gut flora, while another person eating a Western style fat and protein dominated diet will have a Bacteroides enterotype gut flora. What is the gut flora doing? It lives within our gut for our mutual benefit. We provide the gut bacteria a comfortable home at body temperature where they grow best. They in turn ferment undigested foods, protect us from the growth of harmful bacteria, produce vitamins like vitamin K and biotin, and produce hormones that direct the body to store excess food as fat.

Changes Of Gut Bacteria Can Cause Heart Attacks

Changes Of Gut Bacteria Can Cause Heart Attacks

Cleveland Clinic’s gut flora research linked to heart attacks

In April 2013 reports that heart attacks may be related to the composition of your gut flora hit the popular press, articles like this. Two years earlier, in April of 2011, the same Cleveland research group under Dr. Stanley Hazen found that the gut flora composition has an impact on heart disease. They stated that a “byproduct called trimethylamine N-oxide (TMAO) is produced when intestinal bacteria digest the nutrient phosphatidylcholine, commonly known as lecithin”. It was determined that the liver was responsible for producing TMAO out of absorbed materials from gut bacteria and that this was responsible for accelerating hardening of the arteries, which in turn caused deadly heart attacks and strokes.

As can be seen from this link the Cleveland research group is suggesting that TMAO could become a valuable screening tool when measured in patients’ blood to screen for their risk to develop a heart attack or stroke in the future. Furthermore, once these patients are identified, they can be sent to a dietitian and be put on a different diet that prevents heart attacks and strokes; also, the progress could again be monitored through repeat TMAO blood tests down the road.

Criticism of research from the Cleveland Clinic

Not every one has welcomed the study as clear-cut proof for a link between the gut flora and heart attacks, strokes and deaths. This link shows that it is questioned whether perhaps low antibiotic residues in red meat would explain the findings of the study. It rightly points out that there was no control for whether the more than 4000 patients were eating organic foods or a regular American diet. The comment goes on to say that the regular American diet contains residual antibiotics from milk, milk products, beef, chicken and turkey. These traces of antibiotics are powerful enough to have an effect on the gut flora, which likely is the reason for the differences between the vegetarian diet versus a Western style fat and protein dominated diet. It is entirely possible that grass fed beef would not lead to TMAO levels in the blood whereas regular beef or hamburger meat will raise the TMAO levels. The same could be true for egg consumption, which was also accused of raising TMAO levels. However, we do not know whether organic eggs that do not contain antibiotics would have done the same as regular eggs that contain traces of antibiotics.

Cancer caused by gut flora

This 2008 review article explains how lactobacillus and bifidobacteria (probiotics) prevent colon cancer, while bacteria of the Bacteroides and Clostridium variety increase the incidence of colon cancer and the growth rate of colonic tumors. So, the composition of your gut flora does not only matter with regard to prevention of heart attacks and strokes, but is also important in preventing colon cancer.

Change your gut flora to boost your health

Here is where the “rubber hits the road”. What I mean is that you can benefit from all of this research with regard to your health by paying attention to a few facts and possibly making a few changes as follows.

  1. I think that the argument of the bulletproofexec.com website holds true and we should all eat organic meats whenever possible. The Cleveland study has already shown that the gut flora in vegetarians stayed healthy even when they occasionally slipped and ate a regular steak.
  2. Take supplemental probiotics from the health food store. It will improve your gut flora within a day or two.
  3. Higher intake of fruit and vegetables make a measurable difference in the body decreasing the risk for heart attacks and strokes as this British research group has shown. Another research group from Italy has confirmed that an increased intake of fruit and vegetables mobilizes genetic switches that will stabilize the metabolism of the gut wall and prevent cancer of the colon.

So, the verdict for boosting your health is out: eat organic foods, use probiotics as supplements and eat more fruit and vegetables!

More information on nutrition: http://nethealthbook.com/health-nutrition-and-fitness/nutrition/

References

  1. http://www.nature.com/nm/journal/v19/n5/full/nm.3145.html
  2. http://www.ncbi.nlm.nih.gov/pubmed/23614584

Last edited Nov. 7, 2014