An Appetite for Weight Management Tools

WHEN I received the results of a routine cholesterol test this summer, I was certain there had been some kind of mistake. I’m young, unstressed and healthy, or so I imagined. I work out, too, and most impartial observers - and some partial ones - would describe me as lean. Plus, I eat a nutritious diet, I swear. So why did my LDL levels surpass my I.Q. - or, for that matter, Einstein's?

The facts were stark: My genes predisposed me to metabolic syndrome, my doctor told me. Like my forebears, I was on a fast path to heart disease and diabetes. My doctor ordered me to reduce my carbs and come up with a more stringent exercise plan. I’ve rarely monitored what I eat and how much exercise I get. I had no idea how to go about the logistics of it. How would I count my carbs? How would I track my fitness routine?

Of course, there are apps for that. I set out to scour the market for devices and programs to help me and any family member who wished to join me in my low-carb adventure improve our health. I found two kinds of technologies: fitness trackers to monitor physical activity, and P.C. and smartphone apps to track diet. I spent weeks testing several of them. And while I found a few to be quite helpful, they were all just short of fantastic.

I tried four high-end fitness gadgets: Nike’s FuelBand ($149), the Fitbit One ($99.95), Jawbone’s Up ($129.99) and the BodyMedia FIT wireless armband ($149). I also threw in a plain-Jane pedometer, the Omron HJ-720ITC, which I found for $31 at many stores online.

All of these devices work in a similar way. You attach them to your person (the FuelBand and Up fit around your wrist, the FIT goes around your upper arm, and the Fitbit and Omron pedometer can be placed in a pocket or clipped to your belt). Then, as you move, the devices measure your activity.

Unfortunately each device had major drawbacks. Even though I had gotten the proper size, I found that the Up and the FuelBand did not fit well around my wrist. They tapped against my desk while I typed, and they slid about uncomfortably when I washed the dishes. (They are both water-resistant.) BodyMedia’s FIT, meanwhile, is about the size of a man’s large wristwatch. Positioned directly against the skin around the upper arm, it is ungainly — I found it distracting when I was in a short-sleeve workout shirt, and strange-looking under a nice button-down shirt.

The pedometer and the Fitbit were easier to handle; I hardly noticed them crammed with my keys and phone in my pocket. On the other hand, because they are not wearable, I often forgot them on my bedside table, where they did no good.

Still, among these vast offerings, I found the Fitbit and the cheap Omron to be best. The Fitbit is an unobtrusive slab of plastic about the size of a U.S.B. thumb drive. Its software — which is available for Macs and Windows P.C.’s, as well as iOS and Android devices — is simple to learn and offers plenty of graphs and stats to track your progress. The most useful is a graph of your activity over the course of the day: you can see how many calories you burned while at work and alter your behavior accordingly. Maybe go for a brief walk after lunch?