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Harvard Health Letters
If you have an iPhone or Android, you no doubt appreciate why they're called smartphones. The pocket-sized devices, while nominally telephones, are also powerful computers with operating systems capable of running thousands of software programs called applications, or "apps." Most of the apps are designed to keep you entertained, but many have a practical purpose, including helping you manage your health.
While a lot of health and medical apps provide little more than an alternative to pen and paper for note taking, an increasing number are harnessing the phones' computing power, cameras, audio and video capabilities, motion sensors, and GPS systems to create new ways to help you manage your health.
THE WILD WORLD OF APPS
Apps are a new frontier of medicine -- a territory still largely uncharted, unregulated, and unstable. No one knows exactly how many apps there are, how well they perform, or whether they're worth their prices.
That said, it's worth browsing through the health and medicine section of your phone's app store occasionally. You'll find all sorts of inexpensive apps to help you sleep better, quit smoking, abstain from alcohol, and relieve stress. Others might help you manage medical conditions from the common cold to cancer. And if you want to better understand your doctor, you can download medical texts and dictionaries.
If an app is free, you lose nothing by downloading it; you can always delete it. If it costs something, user reviews, which link to the product descriptions in your phone's app store, can help you decide whether to spend the money. Many app producers also offer free test runs.
Here are a few examples of the highest-rated and most widely used apps for common health problems. Some are free; none cost more than a one-time charge of
FITNESS AND WEIGHT CONTROL
Tap and Track is an all-in-one app for diet and exercise. You enter what you eat, your physical activity, your actual weight, and your target weight. It computes your nutritional intake (calories, carbs, protein, saturated and unsaturated fats, and sodium) from a database of about 250,000 items found in restaurant chains, supermarkets, and even your backyard garden plot. It also offers a selection of 180 physical activities.
Each time you enter a snack or plug in a workout, you'll receive a nutritional tally, as well the number of calories you have left for the day. A food score -- a proprietary measurement developed by
Calorie Counter by FatSecret, a free app for Androids, gives the nutritional content of thousands of foods and allows you to enter your weight and exercise regimens. But it doesn't do the math for you or create charts or spreadsheets.
iTreadmill: Pedometer Ultra with PocketStep is available for iPhones for
Walk It! and Pedometer-Widget, both pedometers for Androids, are similar to iTreadmill, but get lower user ratings for being less reliable.
Glucose Buddy tracks glucose readings you enter four times a day, as well as food consumed, exercise, and medication. You can set alarms to remind you to take the glucose readings. The app also allows you to write notes to explain any unusual circumstances, such as high-carbohydrate meals. The data can be uploaded to www.glucosebuddy.com for more detailed analysis. Glucose Buddy can be downloaded free to an iPhone.
Handylogs Sugar, also free, is available for all smartphones. It offers most of the same functions as Glucose Buddy, but its functions are executed on the Internet, so its accessibility may vary with the quality of your phone's Internet connection. Handylogs also has apps for blood pressure, fitness, and diet.
HIGH BLOOD PRESSURE
HeartWise simplifies the task if your doctor has asked you to log your blood pressure at home. You enter your systolic pressure (the top number) and diastolic pressure (the bottom number), as well as your pulse and weight. The app will calculate your average arterial pressure and pulse pressure and generate graphs showing fluctuations in these values over time. It's available for the iPhone for
My Blood Pressure and Heart Rate, available free for Androids, is similar to HeartWise. You enter your systolic and diastolic pressures and heart rate as well as other information -- including which arm was measured and whether you were standing, sitting, or lying down when your pressure was taken.
Sleep Cycle Alarm Clock. If anything attests to a growing global sleep deficit, it's the overwhelming popularity of this quirky
The app uses your phone's motion sensor to chart your sleep patterns. Within a week ,it supposedly knows you well enough to find the best moment (within a pre-set 30-minute period) to awaken you with your choice of tones or tunes. Most reviewers report that they are rarely jolted from a deep sleep and usually feel refreshed, although a few have dashed their phones to the floor during fitful episodes. Others have forgotten their phones were there and made them into the bed the next morning.
Smart Alarm Clock, which works much the same way, is being developed for Android and should be in Android Market in 2011.
Several stress-reduction celebrities have jumped on the apps wagon. All of the following have garnered kudos from users and critics, and the choice depends largely on which "brand" appeals most to you.
Stress Free with Deepak Chopra offers a whole bag of relaxation tricks and exercises -- meditation, yoga, journaling, and even e-mailing privileges with the master himself. It's available for the iPhone for
If you're really stressed, keep an eye out for iBreathe, developed by the
Rage Eraser is the app for you if you're mad as hell and can't take yourself anymore. You may want to start by using the "Rant" feature to record your next tirade and listen to yourself after you cool down. The app can help you track the situations that trigger your anger and identify the distorted thoughts that feed it. There are male and female voices to talk you down from a tantrum in progress, plus techniques for transforming your anger into more productive emotions over time. It's
The cool heads we need to guide us in a health emergency are now available at a finger's touch: There are a slew of first aid apps. The highest rated and most comprehensive is Pocket First Aid & CPR from the
HEARING AND VISION
One of the best-kept secrets is that smartphones can function as hearing and vision aids. Moreover, they'll make you look more like a hipster than an oldster in the bargain.
You can turn your phone's camera into a magnifier by activating the zoom function. (If it doesn't have one, you can download a zoom-lens app.) When you pass your phone over the tiny type on a menu or medicine label, you'll find a readable version on the screen. If you have macular degeneration or low vision, the iPhone's "Accessibility" menu in "Settings" has two features that may help -- a button to change the contrast from black-on-white to white-on-black and a "voice-over" function that can read aloud any text on the phone's screen, including words you type.
You'll need a
NOT FOR DOCTORS ONLY
Medical professionals were early iPhone app adopters, and there are hundreds of apps directed at them. (Expect Android apps to narrow the gap soon.) A few of them can be great aids for patients, too.
Quick Medical Terminology by Simple Tree can help you translate your clinicians on the spot, should they lapse into jargon. The
According to its developer, more than a quarter of a million doctors have Epocrates apps on their phones. Epocrates is actually a network of medical-reference apps sold by subscription for upwards of
Just dial in the pill's suspected name, or just its shape and color, and you'll get an image to match it to. The Epocrates BMI app not only calculates your body mass index but also your basic metabolic rate and daily calorie needs based on your height, weight, age and exercise level. It flags your disease risk and offers treatment guidelines if you are overweight or obese. You'll have to set up an account with Epocrates before you download any of their apps and dodge several "opportunities" to upgrade in the process.
If you want a nonstop diet of news from medical conferences and journals, the Medpage Today app will feed it to your iPhone or Android at no charge. Like the namesake Web site, the app gives you an array of news channels to choose from, including a general "
APPS COME OF AGE
The app passed muster because clinical trials demonstrated that patients who used it had greater reductions in blood sugar than those who didn't. It's slated to be available in the apps stores early in 2011, and apps for asthma, cardiovascular disease, and cancer will be on its heels.
And that's just the beginning. As phones and their apps become smarter and smarter, more clinicians are incorporating them into their practices. In a few years, filling a prescription may be just as likely to involve a session in the apps store as a trip to the pharmacy. - Harvard Health Letter
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Health - New Applications Turning Cell Phones Into Medical Devices