Nutrition & Physical Activity
It's often said that the more (naturally) colorful your plate is, the healthier that meal is for you. This saying holds true in the corn arena: Blue corn does contain more of the amino acid lysine and the antioxidant anthocyanin than "regular" yellow corn; however, it loses much of these nutrients when it's processed into a chip. Blue corn chips may be slightly more nutritious in this sense, but if you're trying to increase the amounts of lysine or antioxidants in your diet, fresh and whole fruits, vegetables, and lean proteins are much better sources.
Research has also found that blue corn tortillas (fresh, not fried into chips) contain more protein than their yellow or white corn counterparts. In addition, blue corn tortillas have a lower starch content and lower glycemic index (GI) than regular corn tortillas. Both of these factors may be helpful to people on low GI diets, such as diabetics, because food with a lower starch and low GI breaks down more slowly into sugars absorbed by the blood stream and can help people avoid spikes in blood sugar levels.
Keep in mind that chips of any color are often fried and can be high in fat and calories, so it's probably best to not make them a regular snack. Baked chips or crackers may be a healthier alternative, especially if they're made with whole grains. Look for the words "whole grain" or "whole" before the grain's name on the ingredients label to make sure it falls into this category. Fiber is another important consideration in a healthy snack, and not all whole grain products are high in fiber, so be sure to look at fiber content on the nutrition label. For more information on whole grains and fiber, check out some of the Related Q&As below.
Fortunately for people who wish to lose weight, there are universal rules that apply, regardless of your typical diet — whether you're a vegetarian or omnivore. First, to lose weight a person has to use more energy (calories) than s/he takes in. To achieve this deficit you can either make dietary changes (so you're taking in less calories), get more physical activity (so you're using more calories in a day), or you can make changes in both areas. Experts recommend making both dietary changes and getting more physical activity for the best results.
It takes a deficit of about 3500 calories to lose one pound of body weight. This means if you are able to cut 500 calories per day from your regular diet you should be able to lose a pound a week (a healthy weight loss rate). It may be beneficial to consider finding the right balance of increasing your physical activity and decreasing caloric intake. You can check out the ChooseMyPlate.gov SuperTracker as a resource that can help you calculate how many calories you need per day, what nutrients are in the foods you eat, and how many calories you burn doing different exercises.
Some suggestions for dietary changes to reduce calories:
- Steam, boil or bake foods instead of frying in butter or oil.
- Sauté foods in vegetable broth, wine, or water instead of oil.
- Limit of high-fat condiments (like mayonnaise, margarine, sour cream, cream cheese, salad dressing, etc.).
- Try low-fat dairy products and nut- or peanut butter. Vegetarians sometimes begin to rely heavily on these foods as sources of protein, but low-fat dairy and nut products provide the same amount of protein as their full-fat counterparts.
- Add beans and legumes to your diet as low-fat sources of protein.
- Eat actual fruit or vegetables rather than drinking them in juice or smoothie form. The fiber in fresh produce works well to satisfy hunger.
- Substitute water, tea, and diet beverages for regular soda, juices, and other high-sugar drinks.
- Limit the amount of alcoholic beverages consumed (empty calories for everyone).
- Begin lunch or dinner with a broth-based, vegetable filled soup or a large salad with a small amount of low-fat or fat-free dressing. These foods take longer to eat and can help curb your hunger so you don't overeat during the rest of the meal.
Be mindful of portion sizes — read nutrition fact labels to find out serving sizes. Some rules of thumb:
- A medium apple or orange is the size of a tennis ball.
- A medium potato is the size of a computer mouse.
- An average bagel is the size of a hockey puck.
- An ounce of cheese is size of four dice.
Some suggestions for incorporating more physical activity into your day:
- Take the stairs as often as possible.
- Park at the far end of the parking lot or get off the bus or subway a stop early.
- Schedule your cardiovascular exercise (walking, jogging, swimming, biking, frantically cleaning your apartment before visitors come over, etc.) so you know you will be able to fit it in. If you're at Columbia, you can participate with CU Move to help stay motivated with your physical activity efforts and earn incentives. Check out the site to learn more.
Hopefully, you'll find some of these suggestions new and helpful. Good luck!
Dear Fat Frat Guy,
You write that you're sitting around the frat house bored. It sounds as though you may have more time to fit in activity than you realize. Exercise doesn't always need to be a long, intensive workout. Short, frequent bouts can be just as effective as longer ones. Why not go out for a walk? Does your frat house have weights in the basement or other area? Taking advantage of exercise equipment is a great idea, but if there isn't any available, jumping rope between sets of push-ups and sit-ups, in your room or a living room or den, can help alleviate boredom.
If these ideas aren't possible, or you still need some suggestions to resist snacking, a few questions to ask yourself may help. First of all, are you actually hungry? When was the last time you ate? Could you put off eating for 15 minutes? If you can wait 15 minutes and then see how you feel, you may decide that you really weren't hungry after all, or you may even forget all about that snack. If you don't and still want to eat — try to quantify your hunger.
Consider the Hunger and Fullness scale. On a scale from 0 - 10, with 0 being BEYOND HUNGRY as though you haven't eaten in an entire day (not recommended) and 10 representing BEYOND FULL as if you ate three Thanksgiving dinners — again not recommended, see where your hunger or fullness falls:
|1||Extremely hungry, irritable, and cranky|
|3||You have a strong urge to eat, but aren't ready to fall over.|
|4||Just a little hungry|
|5||Totally neutral... neither hungry nor full|
|6||You are a notch past neutral — you could eat more but aren't hungry|
|7||You are feeling satisfied. If you stopped eating at this point, you would need to eat again in about 4 - 4½ hrs.|
|8||You are getting pretty full. If you stopped eating at this level, you would probably get hungry again in 5 - 6 hours.|
|9||You are getting really full, and uncomfortable.|
One way to use this scale is to try to rate your feelings of hunger and fullness. You have to work on paying attention to your body's signals. Make an agreement with yourself that you will eat when your hunger is at 3, and stop eating when you reach 7. If you can ask yourself how you are feeling before taking a snack, you may be able to alleviate or at least cut down on boredom eating. Remember, food's for nutrition and nourishment. If another part of yourself needs nourishment, it's important to figure out what that is and create other ways of meeting that need. Excessive snacking often catches up with us in the form of excess pounds, as you have found. If you repeatedly find yourself eating when you aren't hungry, or when you are no longer hungry, you probably don't need those excess calories.
So, once you realize that you aren't hungry, there are probably a ton of things you can do to pass the time. Getting off your duff and moving your body — somewhere further away from the kitchen — would be a good start!
First off, it's not clear if you are running on an indoor or outdoor track. For the sake of this answer, let's assume you run outdoors when you do your track runs. There may be some slight physical differences between how your body expends energy running on a track versus a treadmill.
- The treadmill belt offers some help by pulling your feet back underneath your body, so you are potentially exerting less energy to move your feet and legs than if you were not on a treadmill. However, running stride may change depending on jogging geography. Studies have shown that many runners shift their stride when running on a treadmill. There is a chance that these changes may contribute to your slumping stamina. Subconscious attempts to correct balance on the revolving surface of the treadmill may also cause a runner to increase the amount of time his or her support leg is in contact with the belt, which, in turn, may decrease his or her forward lean. This may result in a runner spending more energy on moving up and down rather than forward, potentially leading to a quicker sap on energy.
- When you run indoors on a treadmill, you do not have to overcome wind resistance. The lack of wind means you'll spend less energy running four miles on a treadmill than you will when you run four miles outdoors. However, it may depend on how fast you are running. For the average person, running five to nine miles per hour (mph) will result in little difference. Some studies say outdoor running expends up to five percent more calories; if you run faster than nine mph, running outdoors could utilize up to ten percent more calories because you are working harder against wind resistance. Other studies say there's no difference. One study demonstrated the way to balance energy use between indoor and outdoor running is to set the treadmill at an incline (or grade) of one percent.
- Running indoors maintains or offers stable elements. Runners not only avoid wind, but also other potential natural elements, such as cold air, rain, or sand (if you run on a beach), which demand extra energy. The stability offered by a treadmill, however, does not necessarily mimic reality. On a treadmill you consistently run at the same pace. When outside, you may subconsciously slow down as your body tires, allowing you to run farther since you're exerting less energy. If you haven't already done so, use a stopwatch to measure your outdoor running speed to see if this is the case.
- Running on a treadmill versus pavement (the composition of the track surface you run on is unclear) provides a softer surface, making it a little easier for your joints. People with knee pain or soreness might opt for a treadmill versus the road outside for this reason.
- Though running on a treadmill may offer these benefits plus others, the psychological benefits of running au naturel may be contributing to your feelings of fatigue. Psychological cues from running outdoors, such as feeling wind against your face or gaining motivation from running with or around other people may make runners feel like they're making progress. On a treadmill, there is also the option to track the distance, speed, and other characteristics of your workout which may subconsciously cause you to feel tired ("wow, I'm running really fast/far!").
Your boredom theory may certainly be contributing to feeling like you're running on empty. Without the need to worry about navigating different paths, terrains, or natural elements, treadmill runners may have more of an opportunity to think about how tired they are. Some people find that being distracted may help them fight this and run for a longer duration. Sports and exercise psychologists often refer to the "distraction hypothesis" as an explanation for the stress/anxiety reducing effects of exercise. Running, in this case, gives someone a time-out from daily stressors or worries by diverting attention. Some people enjoy running on a treadmill because they can watch television, listen to music, or just zone out and run. Others prefer running outdoors because they are distracted by the scenery, other people, the weather, varying terrain, and/or avoiding traffic.
The next time you run on a treadmill, if possible, position yourself in front of a television or listen to your favorite music to test this "distraction hypothesis." See if you can run for a longer period of time. Other factors that contribute to how a person feels when s/he runs include the food(s) s/he has eaten, how well s/he has slept, and/or whether or not s/he is properly hydrated. Every day is a different day for our bodies, but if someone is a consistent runner and has fairly consistent lifestyle behaviors, it may be that their enjoyment of the outdoors is what fuels their running. Though track and treadmill running both offer many of the same benefits, finding out what works best in your workout routine will lead to a more satisfying experience.
Dear To sneeze or not to sneeze,
People in the United States spend billions of dollars a year trying to escape the misery of the common cold. Though some swear by remedies ranging from vitamin C to garlic to exercise, scientists have not conclusively found anything that will prevent, cure, or shorten the course of the common cold. The manufacturers of Airborne claim that the unique combination of herbs, amino acids, antioxidants, and electrolytes "offers vitamin and mineral support for hours," and imply that it helps the body fight bacteria and viruses by boosting the immune system. They have withdrawn their original claims that their product cures or prevents colds.
In addition to vitamins, Airborne contains Echinacea, an herbal supplement some people take on its own for colds or the flu. Similar to research on vitamin C, studies draw a mix of conclusions about whether Echinacea works in preventing or treating colds. There are many products on the market, as well as natural remedies, that successfully treat the symptoms of the cold: body aches, sore throat, stuffy nose. However, as of yet, there is no proven cure.
Some people may feel that Airborne works for them, but it's tough to say conclusively. Colds can last anywhere from one to ten days and a person's immune system will eventually fight it off, even without vitamins or supplements. There has been one study on the effectiveness of Airborne. The clinical trial was a double-blind, placebo study, meaning that neither the researchers nor the participants knew who took the real supplement and who took the placebo until after the trial ended. The study found that Airborne out-performed the placebo, however many people question the potential bias of this study because the research was conducted by the manufacturer.
Additionally, some people have expressed concern about the amount of vitamins A and C contained in Airborne. According to the Food and Drug Administration, the average adult should have 5000 units of vitamin A each day, and 60mg of vitamin C. One dose of Airborne contains 5000 units of A and 1000mg of C, and the package recommends taking a dose every three hours. That means taking significantly more than the recommended daily allowance of both. Overdosing on vitamin A may cause nausea, vomiting, headache and dizziness. Too much C can cause diarrhea and excess gas.
Subways and other enclosed spaces with many people can be germy, especially in cold season. Medical professionals say your best defense against the common cold is maintaining a healthy lifestyle. That includes: eating a balanced diet, being physically active, and getting plenty of sleep. On top of that, thorough hand washing with soap and water, especially before you eat, can keep the subway germs at bay. So, before you go out and buy the new very berry flavor of Airborne or a similar supplement, it might be wise to take its claims with a grain of salt (mix with 8 ounces of water and gargle!).
And thanks to you and everyone else for asking the questions.
Feeling lightheaded and/or dizzy, as if you are about to pass out, are not normal reactions to exercise. After an aerobic exercise session, you should feel invigorated, not totally wiped out. Your description sounds as though you are working extraordinarily hard. Do you eat anything before your physical activity? Are you drinking during your run or bike ride? How is your overall fluid intake? Although an exact diagnosis based on your description can't be given here, these few suggestions may help avoid these feelings:
- Eat a snack prior to exercise. If you have less than one hour before your session, fewer than 200 calories is recommended. A piece of fruit and a couple of crackers work well for many people. Your snack can be a bit larger if you have two hours or so until your workout begins: one small plain bagel with jam, a piece of fruit and a yogurt, or handful of nuts and some crackers are a few suggestions.
- Drink 16 oz. of fluid two hours before an event. This promotes hydration and allows enough time to excrete any excess liquid.
Drink fluids during exercise. Weighing yourself before and after exercise can help determine your sweat rate, and how much you'll need to drink.
- If you lose 1 lb. per hour: drink 4 oz. every 15 min
- If you lose 2 lbs. per hour: drink 8 oz. every 15 min
- If you lose 3 lbs. per hour: drink 8 oz. every 10 min.
- If you lose 4 lbs. per hour: drink 10 oz. every 10 min.
- If you are exercising for longer than 60 minutes, add some fuel to your water with a sports drink. These fluid replacement drinks include glucose and electrolytes (sodium and potassium) to help with fluid intake and absorption.
Talking with your health care provider is a good idea if these strategies don't help. Being properly fed and hydrated, as well as getting enough rest and watching your breathing as your exercise, should help make your workouts more productive.
Veganism: easy as 123 and ABC? Let's discuss. Before we start though, it will be helpful to determine what kind of "vegan lifestyle" you want to lead. The Vegan Outreach group and The American Vegan Society define vegan practice as not eating, buying, or using animal products (including honey and silk) or products tested on animals. Vegan groups give some attention to the health benefits of vegan style eating, but their main focus is on maintaining a lifestyle that minimizes the mistreatment of animals. By exploring your feelings about ethical issues related to consuming animal products and food, you will find your niche in the wide range of interpretations of what a vegan lifestyle entails.
Though some people may be able to completely overhaul their lifestyle all at once, it may be easier to make the change to veganism by breaking it down into three steps:
Start with a small objective, such as cutting one thing out of your eating plan, like red meat, for example. Explore the nearest health food store and start sampling alternative non-meat protein sources. A registered dietitian may be able to offer extra guidance. Columbia students considering a vegan lifestyle may want to make an appointment by contacting Medical Services (Morningside) or the Student Health Service (CUMC).
When you are comfortable with this small change, try cutting more if not all animal products from your diet. Sample vegan egg replacements, soy cheeses, and soy, rice, or almond milks. Also consider phasing out other products you use that contain animal byproducts (i.e., gelatin, leather, or soaps made with animal fat). Now would also be a great time to start researching and experimenting with one new vegan dish each week and checking out recipe sources such as Vegetarian Times or the vegan cookbook section at your local library. One low-carb breakfast recipe you may want to consider is a veggie omelet. Use vegan egg substitute, red or green peppers, soy cheese, salt and pepper to taste, and one slice of whole-wheat toast on the side. Throw in an 8 oz low-fat soy latte and you have yourself a high-protein, relatively low-carb breakfast!
Once you've experimented with some recipes and are more familiar with new ingredients and household items, take the final step of cutting out all animal products from your diet and everyday usage. By doing your research and taking time to reach the ultimate goal of a vegan lifestyle, you will have eased into new approaches to shopping not only for food but other products as well.
Whether you have a strict or liberal definition of a vegan lifestyle, it is a given that you will cut animal products from your eating plan, but it is crucial to keep up on the ABCs of nutrition as well. Most of your replacement protein sources and vegan staples such as grains, fruits, and vegetables will contain carbohydrates, so a low carbohydrate/vegan meal will be hard to achieve — though not impossible. Without paying careful attention to the nutrients you are consuming, you may be at risk for not meeting your nutrient needs. If you're just looking to minimize carbs on the whole, cutting down on junk food (i.e., chips, crackers, sugary cereals, breakfast bars, and cookies) is the ideal way to do this.
As for maintaining appropriate protein levels in your vegan diet, experts at the Institute of Medicine recommend that 15 to 20 percent of daily calories come from protein. This amounts to about 65 grams of protein per day for men and approximately 55 grams for women. Although you will be cutting out commonly recognized protein sources — meat, fish, poultry, and dairy — from your eating plan, have no worries. Plant foods such as soy, legumes, nuts, and seeds also contain a good amount of protein. Check out the Vegetarianism section in the Alice! archives for more information on specific foods that will help you meatlessly "beef up" your pantry and fridge.
By cutting animal products out of your eating plan, you will also cut out the most common sources of a number of high priority nutrients like vitamin B12, vitamin D, calcium, and omega-3 fatty acids. For tips to help you make sure you're consuming enough of them in your vegan diet, check out the Related Q&As below. Being conscious to include fortified soy products, cereals, and non-dairy milk, plus a variety of dark green veggies, legumes, seed, nuts, and beans in your diet is imperative in ensuring you're getting the nutrients your body needs. Many of these foods will also provide good sources of iron, riboflavin, and zinc which are also harder to come by in a vegan diet.
When making changes to your lifestyle and eating habits such as those dictated by veganism, it is best to have a clear understanding of the challenges that lie ahead. The concern you show for doing so in a healthy way is great. Keep it up and remember, although it may not be as easy as 1-2-3, by staying on top of your nutrition ABCs you can successfully convert to a vegan lifestyle healthfully!
Your question does not seem dumb. Many people confuse allergies with intolerances, or mistakenly use the terms interchangeably. So, what's the difference?
Intolerance is a physical reaction to a substance that usually does not involve the immune system. For example, lactose intolerance occurs when a person has a deficiency in lactase — the enzyme that breaks down lactose, the carbohydrate found in cow's milk. So, this milk sugar is not digested adequately, producing abdominal discomfort, gas, and diarrhea. Lactase enzyme supplements and reduced lactose dairy products can help people tolerate foods containing lactose.
An allergy is an immune response — when the body senses that a harmful substance has entered it, and releases specific chemicals to combat the perceived threat. For example, when you are having an allergic reaction, your body releases chemicals called histamines. These cause allergic symptoms that may affect your gastrointestinal tract, skin, respiratory system, and/or cardiovascular system. The effects on one's respiratory system could include a runny nose, cough, swelling of the larynx, and asthma. In the case of foods, studies show that food allergies rarely cause nasal symptoms or wheezing without also causing skin or gastrointestinal symptoms.
Since you are experiencing this set of symptoms, it seems possible that you have a milk allergy. It's important to get the diagnosis from an allergist, so that the appropriate treatment can be identified. If you're a Columbia Student, you can make an appointment with a health care provider by contacting Medical Services (Morningside) or the Student Health Service (CUMC).
Other substances found in milk also can trigger allergic reactions in some people, including antibiotics given to cows, or the proteins of ragweed, linseed, peanut, or wheat that make their way into milk. People with a milk allergy may need to cut milk out of their diet entirely.
Diagnosing food allergies is complex. And having symptoms that seem like a milk allergy doesn’t necessarily rule out the possibility of also having an intolerance to lactose. You have found that cutting milk products out of your diet works well for you, which is a great step. It may make sense to see an allergist to learn more about your own specific situation.
You’re not alone — almost everyone struggles with self or body image at some point, and occasionally worrying about how you look is completely normal. However, if you find yourself constantly thinking about food, your body shape and size, or your appearance, and these thoughts get in the way of work or school, your emotional well-being, or your social life, you may have a more complex body image and/or eating issue.
It may be tricky to distinguish between a healthy diet and exercise routine and habits and behaviors that could be detrimental to your health. For example, restricting calorie intake and engaging in exercise are common elements of a weight loss diet, which is healthy and normal for individuals who have too much body fat. However, if you’re exercising or restricting calories so much so that your emotional and/or physical health suffers, you might be experiencing a more serious issue that requires more attention. If any of this rings true, a good place to start would be to meet with your healthcare provider or a counselor for proper assessment.
A common misconception is that body image issues and disordered eating only affects women. That’s simply not true. Men also experience varying degrees of body image disturbances, eating disorders, and other related issues just as women do. Many men keep these concerns secret, but estimates from the National Association of Anorexia Nervosa and Associated Disorders suggest that as many as 10 percent of those with eating disorders identify as male. Because men are less likely than women to disclose their disordered eating or exercise routines to their friends, loved ones, and doctors, diagnosis and treatment are often delayed. All this to say, reaching out was a brave thing to do!
Eating a healthy, well-balanced diet is essential in making sure you’re getting all of the nutrients you need, including an appropriate number of calories. A balanced diet includes foods from all of the different food groups, and eating at least three meals a day. A balanced diet should not include too much sugar or fat, although some fat is necessary in any diet. For more information about the food groups and to help figure out how much you should be eating, check out the United States Department of Agriculture’s guidelines as well as the Get Balanced Guide for Healthier Eating.
Since you’re already wondering if your eating and exercise habits may be an issue, it's a good idea to talk to someone about food and body image to be sure you're on track for a healthy relationship with food and exercise. If you are a Columbia student, you can make an appointment with a member of the Eating Disorders Team, a multidisciplinary team of health care providers specializing in eating and body image concerns, by contacting Medical Services (Morningside) or the Student Health Service (CUMC) for an appointment. If you're not at Columbia, you can start by discussing your concerns with a healthcare provider or a counselor.
You took a big step in inquiring about these issues, and that isn't easy. You deserve to start feeling better about your weight and body image — hopefully some of this information will get you moving in that direction!
Dear Mom trying to offer healthy choices, but having some technical difficulties,
To think, while some children beg for the latest neon-colored sugar cereal to hit the shelves, your two children are tallying fiber grams. They have fostered their interest in nutrition. Educating about and encouraging healthy behaviors are keys to lowering risks of chronic diseases, such as heart disease and cancer, later in life.
As you are aware, the "Nutrition Facts" label is a helpful tool for understanding what each food contributes to daily nutrient intake. These labels provide the amount of carbohydrates, fat, protein, as well as percent daily values for a number of nutrients. Percent Daily Values (DV) are based on a 2000-calorie eating plan, which can be confusing, because that's more calories than most of us need. For an in-depth explanation about this or other food label content issues, check the U.S. Food and Drug Administration (FDA), or the Kidshealth.org Figuring Out Food Labels page for kid friendly explanations.
Unfortunately, curious consumers will not find "Nutrition Fact" labels on all foods, even if foods have packaging. Some specific exceptions to food labeling requirements include:
- Ready-to-eat food that is not for immediate consumption but is prepared primarily on site — for example, bakery, deli, and candy store items
- Food shipped in bulk, as long as it is not for sale in that form to consumers
- Medical foods, such as those used to address the nutritional needs of people with certain diseases
- Plain coffee and tea, some spices, and other foods that contain insignificant amounts of nutrients
Though you might not see nutrient labels on fresh foods, the information needs to be nearby. The FDA created a voluntary program to promote retailer labeling of the top 20 most commonly sold fruits, vegetables, and fish, as well as the 45 best-selling cuts of raw meat and poultry. The nutrient information needs to be available as a brochure, leaflet, notebook, or stickers in the appropriate grocery department. Labels for fruits, veggies, and raw fish include the following:
- Name of the fruit, vegetable, or fish
- Serving size
- Calories per serving
- Amount of protein, carbohydrates, fat, and sodium per serving
- Percent of the Recommended Daily Allowances (RDA) for iron, calcium, and vitamins A and C per serving
For nutrient information for 5,900 foods from alfalfa sprouts to zucchini at the click of a button, look to the U.S. Department of Agriculture's (USDA) Nutrient Database. A simple keyword search and portion size specification will yield the complete nutrient profile of your food.
One of the most comprehensive print versions of nutrient composition tables is Bowes & Church's Food Values of Portions Commonly Used, by Jean A. T. Pennington, Ph.D. Some 8,500 foods are listed according to food group with analysis results for 30 nutrients, but they are not in "Nutrition Facts" label format.
Hopefully these resources will help make your technical difficulties with nutrition labels a thing of the past!