10 Superfoods for Better Health and More Energy

Tweet about this on TwitterPin on PinterestShare on LinkedInShare on Google+Share on FacebookBuffer this pageDigg thisEmail this to someoneFlattr the authorShare on StumbleUponShare on Reddit

Superfoods are full of good nutrition. They are important for health and well-being. Everyone knows about salmon for heart and muscle health and blueberries for your brain. So I skipped over these and included 10 other foods you should include in your diet:

Kefir

Kefir is a tangy cultured milk product made by fermenting milk with several bacteria and yeasts. Kefir tops the list of superfoods because it is rich in beneficial bacteria called probiotics. Probiotics are good for gut and immune health. Kefir is an excellence source of calcium and vitamin D for bone health and several B vitamins (your energy vitamins). Opt for plain kefir or mix a little flavored kefir (generally high in added sugars) with plain kefir for great taste but less sugar. If you are lactose intolerant kefir is easier on the stomach because enzymes in the bacteria help break down lactose.

Other Options: Though most yogurts don’t contain the wide variety and number of probiotics as kefir, they are a great option as well. Other probiotic-rich foods include: unpasteurized sauerkraut, miso soup, naturally fermented pickles, and good quality sourdough bread.

Beets

Beets come in brilliant shades of dark red, yellow and orange and have a nice sweet earthy flavor. They are a good source of potassium for nerve and muscle functioning as well as healthy blood pressure. Beets are also a good source of vitamin C and fiber. Beets have more nitrates than most other foods. Nitrates help the body make nitric oxide, a gas that expands blood vessels to make room for greater blood flow. Regular intake of high nitrate foods can help lower blood pressure and improve blood vessel functioning. If you drink 16 oz. of beetroot juice (containing 300-500 mg of nitrates) 2.5 – 3 hours before you hit the gym, you may notice a bump in energy thanks to greater blood flow to working muscles. There’s one caveat: antibacterial mouthwash kills the good bacteria in your mouth. This bacteria is needed for the first step in nitric oxide production. Some research suggests antibacterial mouthwash may increase blood pressure and raise heart disease risk.

Other Options: Celery, argula, spinach are good sources of nitrates.

Ginger

Ginger soothes an upset stomach and helps ease symptoms of motion sickness. Make ginger a regular part of your diet and you’ll also benefit from its ability to decrease muscle soreness after tough bouts of exercise.

Other options: Combat excess muscle soreness with tart cherry juice.

Sunflower seeds

One serving of sunflower seeds will help you meet one-half of your daily vitamin E needs – a nutrient that most Americans aren’t consuming in recommended amounts. Vitamin E protects your cell membranes (including muscle cells) from damage, supports immune functioning and helps expand blood vessels to accommodate greater blood flow. Vitamin E deprived muscle cell membranes do not heal properly yet a healthy balance is important. Get enough, but not too much, of this vitamin as both deficiency and excess may impair your training gains. Plus, more than recommended amounts will not improve athletic performance.

Other Options: Snack on almonds, pine nuts, and peanuts to help you meet your vitamin E needs.

Pumpkin seeds

Pumpkin seeds are one of the best sources of magnesium, a mineral that is so widely under-consumed. Magnesium keeps muscles and nerves functioning properly and is also necessary for your body to produce energy. Pumpkin seeds are also an excellent source of zinc, a mineral important for immune health and wound healing.

Other options: Sesame seeds and Brazil nuts are also excellent sources of magnesium. For a magnesium-packed meal, brush firm tofu (also a source of magnesium) with sesame oil and coat with sesame seeds before stir-frying.

Olive Oil

Olive oil is a staple in Italy and Spain where the Mediterranean Diet is associated with reduced risk of cardiovascular disease, cancer and improved brain health. Replacing dietary saturated fats, such as butter or shortening, with olive oil may help reduce risk of coronary heart disease. Replacing other cooking oils with olive oil may help lower blood pressure and improve blood cholesterol. Use olive oil in moderation, because it is high in calories. There are some sketchy companies out there who mix cheaper quality oils with olive oil to lower their costs. Make sure you’re getting good quality olive oil by looking for a seal of approval from the USDA Quality Monitoring Program or the North American Olive Oil Association (NOOA).

Other Options: For baking, cooking, stirfrying and other high heat cooking, consider almond, hazelnut, peanut, or pecan oil.

Garlic

Garlic adds favor without calories. When used in a marinade or added to beef, fish, chicken or turkey patties, garlic helps limit the formation of nasty compounds that cause cancer in animals, heterocyclic amines (HCAs). HCAs are formed when your protein-rich food is cooked. High dry heat leads to more HCAs formed so make sure you add garlic to any meat, poultry or fish you throw on the grill or in the smoker.

Other Options: Rosemary and Caribbean spices also decrease HCA formation.

Dark Chocolate, one of the Ultimate Superfoods?

Wouldn’t it be great if you could bite into a rich, smooth, dark piece of chocolate with complete confidence that you were doing something good for your body? Dark chocolate is made from cocoa powder – the defatted powder from cacao beans. Cocoa powder contains flavanols, a group of antioxidants responsible for the association between dark chocolate and lower blood pressure. Unfortunately you can’t rely on the percentage of cocoa or cacao in a bar as an indicator of total flavanol content. Here’s your best option for  getting that dark chocolate taste you are craving and health benefits as well.

Tempeh

In your local grocery store, tucked in a remote refrigerator between tofu and non-dairy “cheese,” you’ll find long, thin light brown colored sheets of tempeh. Tempeh is fermented soybeans. Unlike tofu, tempeh includes the whole soybean so it is higher in protein, fiber, and vitamins. Tempeh is also an excellent source of iron (for oxygen delivery throughout your body), magnesium and vitamin B-6 (an energy vitamin) and good source of calcium.

Tempeh has a firm, chewy texture and slightly earthy, bean-like taste. Replace deli meat with tempeh, try it sautéed in sesame oil and garlic, grilled or served on top of salad.

Other options: Pick up plan or flavored tofu.

Green peas

Green peas are so ordinary. Why did I add them to the list of superfoods? Green peas are an excellent source of fiber and vitamin C, good source of vitamin A (important for your eyes and a “nutrient of concern”) and also contain decent amount of magnesium, vitamin B6, folate (a “nutrient of concern,” folate helps build healthy new cells and prevents some birth defects) and iron. Look for pea protein in bars and protein powders. It boosts a leucine (the key amino acid that turns on muscle building and repair) content equivalent to whey protein and will give you the same muscle-building results as whey protein.

Try peas in multiple forms including pea protein powder, split pea soup and peas mixed into burritos, wraps, in other dishes. Add peas to your rice pilaf, pasta dish, casserole, or stew.

Other Options: Consider yellow whole or split peas. They have a similar nutrition profile to green peas.

Superfoods add vitamins, minerals, fiber and plant compounds important for good health. They support your daily energy needs while improving your overall health.

References

Balk E, Chung M, Lichtenstein A, et al. Effects of Omega-3 Fatty Acids on Cardiovascular Risk Factors and Intermediate Markers of Cardiovascular Disease. Summary, Evidence Report/Technology Assessment: Number 93. AHRQ Publication Number 04-E010-1, March 2004. Agency for Healthcare Research and Quality, Rockville, MD.

Kromhout D, Bosschieter EB, de Lezenne Coulander C. The inverse relation between fish consumption and 20-year mortality from coronary heart disease. N Engl J Med 1985;312:1205–1209.

Kromhout D, Feskens EJ, Bowles CH. The protective effect of a small amount of fish on coronary heart disease mortality in an elderly population. Int J Epidemiol 1995;24:340–345.

Mozaffarian D, Rimm EB. Fish intake, contaminants, and human health: evaluating the risks and the benefits. JAMA 2006;296(15):1885-99.

Ahmet I, Spangler E, Shukitt-Hale B, et al. Blueberry-enriched diet protects rat heart from ischemic damage. PLoS One. 2009; 4: e5954. PloS ONE 2009, 4:e5954.

Malin DH, Lee DR, Goyarzu P, Chang Y, Ennis LJ, Beckett E, Shukitt-Hale B, Joseph JA. Short-term blueberry-enriched diet prevents and reverses object recognition memory loss in aging rats. Nutr 2011;27:338-342.

Krikorian R, Shidler MD, Nash TA, et al. Blueberry supplementation improves memory in older adults. J Agric Food Chem 2010, 58:3996-4000.

Davis C, Bryan J, Hodgson J, Murphy K. Definition of the Mediterranean Diet; a Literature Review. Nutrients 2015;7(11):9139-53.

Food Labeling, Summary of Qualified Health Claims Subject to Enforcement Discretion. Food and Drug Administration.

Fernandez-Janne E et al. Risk of first non-fatal myocardial infarction negatively associated with olive oil consumption: a case-control study in Spain. Int J Epidemiol. 2002 Apr;31(2):474-80.

Rozati M, Barnett J, Wu D et al. Cardio-metabolic and immunological impacts of extra virgin olive oil consumption in overweight and obese older adults: a randomized controlled trial. Nutr Metab 2015,12:28.

Grassi D, Necozione S, Lippi C, et al. Cocoa reduces blood pressure and insulin resistance and improves endothelium-dependent vasodilation in hypertensives. Hypertension 2005, 46(2):398-405.

Hooper L, Kroon PA, Rimm EB, et al. Flavonoids, flavonoid-rich foods, and cardiovascular risk: a meta-analysis of randomized controlled trials. Am J Clin Nutr 2008;88(1):38-50.

Mastroiacovo D, Kwik-Uribe C, Grassi D et al. Cocoa flavanol consumption improves cognitive function, blood pressure control, and metabolic profile in elderly subjects: the Cocoa, Cognition, and Aging (CoCoA) Study—a randomized controlled trial.. Am J Clin Nutr 2014.

Miller KB, Hurst WJ, Payne MJ et al. Impact of alkalization on the antioxidant and flavanol content of commercial cocoa powders. J Agric Food Chem 2008, 56(18):8527-33.

Product Review: Cocoa powders, dark chocolate, extracts, nibs and supplements – sources of flavanols. ConsumerLab.com

U.S. Department of Agriculture, Agricultural Research Service. 2012. Total Nutrient Intakes: Percent Reporting and Mean Amounts of Selected Vitamins and Minerals from Food and Dietary Supplements, by Family Income (as ! of Federal Poverty Threshold) and Age, What We Eat in America, NHANES 2009-2010. Available: www.ars.usda.gov/ba/bhnrc/fsrg.

Powers SK, Jackson MJ. Exercise-induced oxidative stress: cellular mechanisms and impact on muscle force production. Physiol Rev 2008, 88(4):1243-76.

Sharman IM, Down MG, Norgan NG. The effects of vitamin E on physiological function and athletic performance of trained swimmers. J Sports Med Phys Fitness 1976;16:215–225.

Institute of Medicine (IOM). Food and Nutrition Board. Dietary Reference Intakes: Calcium, Phosphorus, Magnesium, Vitamin D and Fluoride. Washington, DC: National Academy Press, 1997.

Smith JS, Ameri F, Gadgil P. Effect of marinades on the formation of heterocyclic amines in grilled beef steaks. J Food Sci 2008, 73(6):T100-5.

Notice of GRAS Exemption – Pea Protein as a Food Ingredient http://www.fda.gov/downloads/Food/IngredientsPackagingLabeling/GRAS/NoticeInventory/ucm464894.pdf

Babault N, Paizis C, Deley G et al. Pea proteins oral supplementation promotes muscle thickness gains during resistance training: a double-blind, randomized, placebo-controlled clinical trial vs. whey protein. JISSN 2015, 12:3.

Peas Commodity Fact Sheet. https://www.usaid.gov/what-we-do/agriculture-and-food-security/food-assistance/resources/peas-commodity-fact-sheet

 

 

 

 

 

Does Meat Cause Cancer?

Tweet about this on TwitterPin on PinterestShare on LinkedInShare on Google+Share on FacebookBuffer this pageDigg thisEmail this to someoneFlattr the authorShare on StumbleUponShare on Reddit

According to a report released today, processed meat is carcinogenic (cancer causing – see the definition below for more detail). After considering more than 800 studies examining the association between meat and cancer, the World Health Organization’s International Agency for Research on Cancer (IARC) Working Group classified processed meats as Group 1, carcinogenic. They based this on convincing evidence from population based studies that eating processed meats causes colorectal cancer. Yet the results aren’t as crystal clear as they seem.

What is Red Meat and Processed Meat?

Red meat – unprocessed mammalian muscle meat – beef, pork, veal, lamb, mutton, horse or goat meat, including minced or frozen meat

Processed meat – meat that is transformed through salting, curing, fermenting, smoking or other processes to preserve the meat and enhance flavor. Processed meats can include other meats or meat byproducts such as blood. Hot dogs, sausages, corn beef, beef jerky and canned meat are all examples of processed meat.

Carcinogenic – compounds that are carcinogenic “do not cause cancer at all times, under all circumstances. Some may only cause cancer in people who have a certain genetic makeup. Some of these agents may lead to cancer after only a very small exposure, while others might require intense exposure over many years,” states the American Cancer Society.

What they Found

Processed Meat:
Though they considered 800 studies, their conclusions were drawn upon 18 cohort studies (this is when scientists follow a group of people that don’t have the disease – in this case cancer – over time to see who does and who doesn’t develop cancer). Twelve of the 18 studies reported positive associations between processed meat consumption and colorectal cancer. Six out of 9 case-control studies (where they look at the diet of people with cancer and compare it to the diet of people without cancer) reported a positive association and a meta-analysis (statistical approach to combining results from several studies) of 10 cohort studies reported a statistically significant dose-response relationship with an 18% increase in risk for every 50 gram (1.5 oz. or about the size of ½ of a deck of cards) of processed meat eaten daily. Yet Dr. Kurt Straif, Head of the IARC Monographs Programme stated “for an individual, the risk of developing colorectal cancer because of their consumption of processed meat remains small, but this risk increases with the amount of meat consumed.” Recent estimates suggest approximately 34,000 cancer deaths per year can be attributed to diets high in processed meats.

Red Meat:
The Working Group classified red meat as “probably carcinogenic to humans” while stating there is “limited evidence in human beings for the carcinogenicity of the consumption of red meat.” If those two statements sound like they contradict each other, here’s why:

The largest body of data they found was from 14 cohort studies (where they follow a group of people that don’t have the disease – in this case cancer – over time to see who does and who doesn’t develop cancer). Seven of the 14 studies showed higher consumption of red meat (as compared to lower consumption of red meat) was positively associated with colorectal cancer. Seven out of 15 case-control studies (where they look at the diet of people with cancer and compare that to the diet of people without cancer) found higher consumption of red meat was positively associated with colorectal cancer compared to lower intake of red meat. “No association was seen in  several high quality studies.” The author suggests that bias and confounding couldn’t be ruled out (other diet and lifestyle variables may have affected the results.

What Makes Processed Meat Carcinogenic?

When meat, fish, or poultry (chicken, turkey, ducks, geese) are cooked over high temperatures, chemical compounds that are known or suspected carcinogens (cancer causing) including N-nitroso-compounds (NOC), polycyclic aromatic hydrocarbons (PAH), advanced glycation end products (AGEs) and heterocyclic aromatic amines (HCA) are formed. High and dry heat including frying, grilling and barbecuing are the worst combination for the production of these chemicals. The 2-page report mentions some of these compounds as “mechanistic evidence” supporting their conclusions while also stating that we don’t know how cancer risk is increased by processed and red meat. (The full report won’t come out for several months).

N-nitroso-compounds (NOC) are found in nitrate-cured meats, smoked foods (fish or meat), malt in beer and whiskey production, pickled vegetables and foods stored under humidity leading to fungi that generate nitrosamines.

Polycyclic aromatic hydrocarbons (PAH) are formed when fat and juices from meat grilled over an open flame drip onto the fire, resulting in flames, and PAHs adhering to the surface of the meat. Smoking meats also leads to the formation of PAHs. PAHs are also found in air pollution.

Advanced glycation end products (AGEs) are harmful compounds formed during dry heat cooking. Though many foods contain AGEs, meats fried or cooked over dry heat have significantly more AGEs than any other food. AGEs accumulate in the human body, affect cell functioning and may contribute to insulin resistance, type 2 diabetes and, as the name implies, aging.

Heterocyclic aromatic amines (HCA) are formed when amino acids, sugars and creatine react at high temperatures. When meat, fish, pork and poultry are cooked at higher temperatures for a longer period of time, more HCAs are formed.

HCAs and PAHs must be metabolized by specific enzymes (a process called bioactivation) before they can damage DNA. Yet the activity of these enzymes varies between people and therefore, one’s risk of developing cancer due to HCA and PAH exposure depends on how they metabolize these compounds.

What this Report Does Not Tell Us

IARC Working Groups examine if exposure to a specific food or compound could cause cancer but does not tell us how likely we are to get cancer. Also, there are many known human carcinogens (UV light – including the UV light in those LEDs lights used to set gel nails, alcohol, the mineral oil you use on wood cutting boards and more) – some many cause cancer after little exposure while others take a lifetime of exposure. Many factors influence the development of cancer including age, gender, family history, and other lifestyle factors (tobacco and alcohol use, weight, diet, physical activity).

How Much Processed & Red Meat is Too Much?

Cancer is a complex disease and no single food causes, cures or prevents cancer. However, as stated by the American Institute for Cancer Research (AICR):

  • A modest amount of red meat does not raise colorectal cancer risk.
  • Eating more than 18 ounces of cooked red meat per week increases the risk of  colorectal cancer.
  • Eating small amounts of processed meat regularly increases risk (of colorectal cancer).

AICR recommends avoiding processed meats and eating no more than 18 ounces of red meat per week (3 oz. = about the amount in a deck of cards). I also suggest making potentially better choices (see the infographic below and the 2nd to last paragraph of this blog post). What about HCAs, PAHs and other compounds? Here’s how you can decrease your intake of these compounds:

cooking meat
Where does meat processed without nitrates fit in? We don’t know. If they are processed without nitrates then they should  presumably contain few to no NOCs making them a better choice than meats processed with nitrates. However, I couldn’t find a single study comparing the compounds in meats produced without nitrates to their counterparts produced with nitrates.

If you aren’t preparing your food at home, take a close look at how it was prepared and cooked so you can minimize your intake of these compounds. If you don’t plan on cutting out processed meats, at the very least, limit your intake of sausage, ham, bacon, hot dogs, pepperoni, pastrami, bologna, corned beef, deli/luncheon meats, salami, nitrite-treated meat or meat products as well as meat preserved by smoking, curing or salting, all of which could increase your risk of cancer.

Disclosures: None, I have no connection to any red meat commodity boards, stock in red or processed meat companies (though I should look up the shorts or consider buying on a dip) or emotional connection to cows, pigs, horses, red or processed meats 🙂

References:
National Cancer Institute. 
American Institute for Cancer Research
Medline Plus.
Nutr Cancer 2008;60(2):131–144.
J Food Sci 2008;73(6):T100-5.
Cancer Sci 2010;101(2):508-16.
Cancer Epidemiol Biomarkers Prev 2012;21(6):905-15.
Int J Cancer 2014;134(1):125-35.
J Am Diet Assoc 2010;110(6):911-16.
Curr Diab Rep 2014;14(1):453.
Ann N Y Acad Sci 2005;1043:533-44.