How I Determine Which Foods Are More Healthful Than Others
Mar 29, 2011
A friend recently emailed me for advice on how to determine which foods are more healthful than others. Great question! The answer really does merit significantly more than a blog post (hey, that’s why we have nutritionists and dietitians, right?), but here’s where I start the process:
First, realize that there’s no one way to determine if a food is healthier than another. Sometimes it’s obvious (fettuccine alfredo vs. steamed veggies), but usually it’s much more nuanced and there isn’t necessarily one right answer (veggie burger vs. turkey burger). Or worse, the choice that seems like great one is actually far more unhealthful than the other option (chicken caesar salad vs. chicken breast sandwich).
There are some existing systems to help figure this out, of course, such as Weight Watchers or the ANDI scale, but none of them is perfect. (Weight Watchers has the specific goals of weight loss or maintenance, and the ANDI scale is per ingredient, not per meal or recipe, and simply looks at nutrient density. Both can be useful, but neither gives you the whole picture.)
Before you start reading labels, it’s important to go to the official US Dietary Guidelines. Even if it’s not a perfect system (cynics, take note: The guidelines may be influenced by politics and the myriad food lobbies), those numbers give you a framework of the minimum or maximum of each macro- and micro-nutrients you should be eating each day. For example, if you don’t know that you should be eating 2,400 calories a day (or whatever is appropriate for your age, sex, activity level, and overall health), there’s no way to know if that Shrimp Diablo Burrito (clocking in at 1,060 calories) is a good choice for dinner (hint: it’s not.)
When comparing similar food options, I generally look at the calories first — I find that to be the single most useful indicator. If a dinner is 450 calories and will be filling and satisfying, it’s probably a good choice… if it’s 750 calories, it still might be okay, but it’s not necessarily the best choice.
After that, I look at sodium. Most prepared foods are outrageously high in sodium (recommended limits are around 2,300mg a day). A single restaurant meal entrée appetizer can easily blow past that number.
I then glance at the saturated fat content (which should be relatively low, especially if it’s coming from animal products) and fiber (the higher the better, as long as it’s not from added fiber, like inulin. Added fiber isn’t necessarily bad, but it’s cheating, and shouldn’t count for our purposes here).
The final aspect to consider is to look at the big picture, not just that one meal. When you’re choosing between entrées, it’s helpful to also consider how different this food is from your previous meals. More variety is more better!
You can’t eat by the numbers alone.
So how do I put all this together? This is where it becomes more of an art than a science, and it’s exactly what I have to do when putting together my Menu Monday recommendations.
I first try to compare apples-to-apples. My “Best Choices” and “Worst Choices” are only compared within a specific category (ie, “Sandwiches”). Sometimes there are no options that are worthy of “Best Choices” at all, but usually I will be able to find some options that are significantly better than others, and some that are significantly worse.
Let’s look at three sandwiches from an actual restaurant:
Sandwich A: Roasted Chicken
380 cal, 5.5g sat fat, 9.5g total fat, 845mg sodium, 5g fiber, 27g protein
Sandwich B: Turkey Breast & Ham
350 cal, 4g sat fat, 9g total fat, 1,235mg sodium, 5g fiber, 24g protein
Sandwich C: Veggie
290 cal, 3.5g sat fat, 7.5g total fat, 505mg sodium, 5g fiber, 12g protein
(I was going to leave off the type of sandwich, but that becomes an unrealistic comparison. You have to know what you’re eating, because that factors into the decision, of course! You can’t eat by the numbers alone.)
So, which would you choose?
The calories are all reasonable; you’re probably okay with any of them (depending on what else you’re eating that day, of course). The saturated fat varies a little bit, but not hugely. They’ve all got the same fiber.
So that leave us comparing the sodium and the protein. The Turkey & Ham is off the charts for sodium (1/2 your entire day’s allowance), so let’s rule that one out. The Chicken is high in sodium (about 1/3 of your days allowance). So that leaves the Veggie, at a much more respectable (but still a little too high) 505mg.
But wait! The Chicken Sandwich has significantly more protein than the Veggie. It’ll be more filling and probably keep you fuller longer. If you’re going to eat the Veggie sandwich and be hungry again in an hour (and then grab a candy bar out of the vending machine), you’re probably better off going with the Chicken. On the other hand, maybe you know that the Veggie is filling enough for you, and you’ve got a banana on your desk, ready to go.
See my point? You have to weigh all these decisions (and frequently do it all in a split second), and decide what’s right for you, and what fits into your big picture.
Don’t be afraid to take your time, even if there’s a line of folks behind you. Think it through before you order, and then after you eat, pay attention to how your body responds. Learn from each experience. Know yourself, know what you’re eating, and listen to your body. That will go a long way towards helping you decide what’s right for you.
Missed my nutrition facts panel guide last year? It’s a one-page PDF that you can print and stick to your fridge or take with you when you go shopping.
How do YOU determine which foods are healthier than others? Share in the comments!
Photo by Jason Alley.