PFTL News December 2018

NUTRITION MISFIRES (excerpted from IDEA Food and Nutrition Nov. 2018)

There is so much conflicting information about food and nutrition, it is a challenge to determine what is the correct information.  Stamp out misunderstandings by learning how top nutrition professionals set their clients straight on five all-too-common nutrition misfires.

Misfire #1 Sugar is bad; therefore, all carbs are bad.

“All carbs are not created equal,” advises Kathy McManus, MS, RDN, director of the Department of Nutrition at Brigham and Women’s Hospital in Boston. “There are some unhealthy sources, like white bread, white rice, white potatoes, and foods containing added sugar (cake, cookies, candy and sugar-sweetened beverages). These foods raise blood sugar and can lead to diabetes and weight gain. But “The right types of carbohydrate foods, such as intact whole grains, fruits, vegetables, beans and other legumes, are the foundation for a healthy diet.” (Intact whole grains include all layers of the original kernel: bran, germ and endosperm.)

Focus on reducing added sugar, not on reducing sugar that occurs naturally, as in fruit or all carbohydrates. it is added sugar or refined grain, limit intake. If it’s in whole foods, dig in, though be mindful of portion control even with healthy foods.

Misfire #2 Vegetarian diets are healthy, so I should avoid all animal foods.

Vegetarians have lower rates of overweight and obesity, diabetes, heart disease, and some cancers compared with those on a typical American diet (Appleby & Key 2016). That sounds pretty compelling, but it doesn’t necessarily mean animal foods (meat, poultry, fish, dairy products) have no place in a healthy diet. In addition to protein, meats are sources of well-absorbed minerals, including iron and zinc, while milk and other dairy products are great sources of calcium.

Misfire #3 Gluten is bad for some people; therefore, everyone should avoid gluten.

Gluten is a protein found in wheat, barley and rye. “The fact that gluten is a protein surprises people, since today’s food conversation is very positive about protein,” says Kim Kirchherr, MS, RDN, a nutrition consultant.  People with celiac disease react to gluten in a way that damages the lining of their small intestine, leading to digestive symptoms like bloating, diarrhea and malabsorption of nutrients.

Wheat sensitivities are not always related to gluten. “Some people with irritable bowel syndrome are intolerant to the carbohydrate portions of wheat called oligosaccharides. But the majority of us are totally okay to consume wheat and gluten,” says Denise Barratt, MS, RDN. She says gluten-free products may have less iron, fiber and B vitamins, so reconsider switching unless you need to avoid gluten for health reasons.

The message shouldn’t be to avoid gluten; it should be to choose more nutrient-dense breads made with whole-grain flours and, especially, more intact whole grains like barley and quinoa, which don’t raise blood sugar as much.

Misfire #4  Juicing is the best way to get your fruit and veggies.

Recent research has shown that juices are an effective way to increase vitamins, minerals and phytonutrients in the diet (Zheng 2017). In the U.S., most people don’t eat enough fruit or vegetables and may miss out on the nutrients they provide: vitamins A and C, potassium, fiber, phytonutrients, and more.

Juicers, however, usually remove fiber, and fiber is important for digestive health and cholesterol reduction, and it helps keep blood sugar under control.

Calories are another consideration. You are probably consuming a lot more calories from juice than you would if you were eating the whole fruit.

Misfire #5  Vitamins and minerals are essential for health, so I should take a lot of them.

Vitamins and minerals are critical for good health, but “bigger isn’t always better. We can’t easily get rid of excess vitamins stored in fat, such as fat-soluble vitamins A, D, E and K. The B vitamins and vitamin C, on the other hand, are water-soluble, and we excrete what we can’t absorb, so taking an excess of those may mean you are essentially flushing the money you paid for them down the toilet.

While a multivitamin and mineral supplement containing around 100% of the Daily Values may be low risk and could make up for nutrients missing in the diet (Ward 2014), we have little research on the long-term effects of large doses of vitamins, minerals and other dietary supplements. In the U.S., laws do not require the Food and Drug Administration to verify safety or effectiveness before dietary supplements are marketed to consumers (NIH 2011).

 

ENJOY THE HOLIDAYS.  DON’T FORGET TO EXERCISE,  EAT HEALTHY,  AND, MOST IMPORTANTLY, BE NICE AND SMILE A LOT.

PFTL News November 2018

THE HUMAN HEART (from IDEA Fitness Journal October 2018

As “head coach” of the circulatory/cardiovascular system, the heart pumps blood throughout the body, supplying oxygen and nutrients to tissues.

Actually, two circulatory systems work as a “team”: Systemic circulation carries oxygenated blood from the heart to the body and sends deoxygenated blood back to the heart. Pulmonary circulation transports oxygen-poor blood from the heart’s right ventricle to the lungs, where it picks up a new supply of oxygen-rich blood that it carries to the heart’s left atrium.

According to the Heart Health Institute (2015), you’d need to leave your kitchen faucet on full blast for at least 45 years to match the amount of blood pumped by the heart in an average lifetime. Heart health is high on the list of client goals—and for good reason. Learn more about this miraculous muscular organ:

  • The “broken-heart myth” may not be that far-fetched. A breakup or traumatic news (say, the death of a loved one) can spur a heightened risk of heart attack. It can also trigger the release of stress hormones that may temporarily stun the heart, potentially causing heart attack symptoms (Heart Health Institute 2015).
  • The heart of a typical athlete “churns out up to 8 gallons of blood per minute” (Arkansas Heart Hospital 2016).
  • Heart attacks (also known as myocardial infarctions) most often occur early on a Monday morning in fall or winter (Lefer 2010).
  • What’s the earliest known case of heart disease? Scientists have found atherosclerosis in a 3,500-year-old Egyptian mummy (Allam et al. 2011).
  • Christmas and New Year’s Day are the two days of the year when heart attacks are most likely to occur (Kloner 2004).
  • The heart beats 100,000 times a day and 35 million times a year. During an average lifespan, it will beat more than 3 billion times (Arkansas Heart Hospital 2016).
  • Women have smaller hearts than men do and exhibit different signs of a heart attack. Women are more likely to experience shoulder pain, nausea and indigestion rather than the trademark chest pain (Watson 2009).

USING STRESS FOR POSITIVE RESULTS   (from IDEA Fitness Journal October 2018)

You’ve been training for a 10K. You’re ready, but when you show up on race day, your heart is pounding and you feel panicked. What should you do to lower your stress? Some people might say, “Take a deep breath.” We all know that deep breathing to calm the nervous system is a go-to strategy for dealing with stress. But is it always the best strategy?

In her work as a psychologist and a yoga and fitness professional at Stanford University, Kelly McGonigal, PhD, has found that expanding your repertoire of strategies for dealing with stress is helpful. She suggests three alternative approaches.

Harness the Energy of Stress – Studies have compared the physiological responses of terrified first-time skydivers and experienced skydivers (Allison et al. 2012; Hare, Wetherell & Smith 2013). Surprisingly, they don’t differ. Heart rates go up whether people are scared or thrilled. Yet how you interpret your pounding heart and sweaty palms can be the difference between feeling panicked and feeling amped up. It turns out that choosing a positive interpretation of stress is something many elite athletes have learned to do. They don’t see stress as a barrier to performance, and they don’t view anxiety as a signal they are going to choke.

The takeaway: When you feel your heart pounding, palms sweating or mind racing, remember that these are signs of an adrenaline rush that can fuel peak performance. Remind yourself that even the most accomplished athletes, performers and leaders experience anxiety, and the most successful choose to channel their stress into energy and positive motivation.

Choose a Growth Mindset – Think of a time in your life that changed you in a positive way. Maybe you discovered your courage or developed more compassion for others. Maybe it was a turning point that forced you to make an important change.

Whatever your story is, it’s likely it was stressful while you were going through it. Psychologists know that it is through stress that we learn and grow—even if the process isn’t always fun. Difficult experiences can have positive outcomes, whether it’s personal growth from defeating obstacles or growth that can follow serious adversity.

The takeaway: Reflect on how you have grown from adversity. What past difficulties have strengthened you and given you a greater sense of your own capabilities and purpose? You can strengthen your resilience by thinking about how a stressful situation can contribute to your personal growth.

Make It About Something Bigger Than YourselfImagine two people in a hospital waiting room, both worried. One reaches out to hold the other’s hand, hoping to comfort her and offer compassion. Which of the two will experience greater stress relief?

Both will likely feel better, but the person who offered the compassion will get the bigger benefit. Neuroscientists have studied what happens in the brain during social support, and giving support reduces stress significantly more than receiving support (Inagaki et al. 2016). Moreover, just thinking about helping and encouraging someone else can create the same stress-relieving changes in the brain (Engen & Singer 2015).

The takeaway: Savor being part of something bigger than yourself. In a moment of stress, thinking about others who might also be struggling, or connecting to the joy of helping others, can be a powerful source of resilience.