If you’ve ever tried tracking what you eat, you know it can swing from “helpful” to “stressful spreadsheet” pretty fast. Learning how to keep a food journal that actually fits into your life is the whole trick.
Why Your Doctor Cares About Your Food Journal
In Good Energy: The Surprising Connection Between Metabolism and Limitless Health by Casey Means, she talks about how she won’t see patients if they refuse to keep a food journal.
Her reasoning is strong: not tracking what you eat is kind of like forgetting to tell your doctor about a bunch of medications you take every day. Food is one of the main inputs into your system. If they can’t see it, they’re missing a huge part of the picture.
She recommends several tools for how to keep a food journal, including apps, but also notes that even paper and pencil can work. The point isn’t the format. It’s getting an honest look at what you’re actually putting into your body.
When Tracking Becomes A Problem
This is where I want to step in and suggest a low detail approach, unless you specifically need more precision for a medical reason. I tried the very detailed route in an app. It was… not great.
A few things happened:
- Cooking took way longer because I had to obsessively measure everything.
- I found myself saying things like “You can’t have a bite, I measured this just for me,” which my wife didn't love to hear.
- It did make me avoid absolute junk that I didn’t want to enter.
- But, it also nudged me toward processed, packaged snacks purely because they were easier to log.
That last one was the most revealing. When the app becomes the boss, you sometimes pick food that works for the app more than food that works for your body.
How To Keep A Food Journal Without Overdoing It
So here’s the version of how to keep a food journal that I’d actually recommend for most people:
- Use simple descriptions and rough amounts.
- Write things like “half an apple,” “a small handful of nuts,” “one slice of pizza,” instead of measuring everything down to the gram.
- Note the basics of what you ate and roughly when, and maybe jot a quick comment if something felt unusually good or bad afterward.
The goal is insight, not precision for its own sake. “Half an apple” is good enough as data. It’s vastly better for you than a plastic pouch filled with processed fruit plus a chemical cocktail, and your journal should reflect that basic reality more than it needs to impress a nutrition database.
Let “Good Enough” Be Your Default
If you try to make your food journal perfect, it can easily become another source of stress and shame. If you make it simple and honest, it can quietly become one of your most useful health tools.
So when you think about how to keep a food journal:
- Aim for consistency over detail.
- Capture patterns, not just numbers.
- Remember you’re doing this to understand and support your body, not to win an invisible tracking contest.
I’m planning to keep mine in a way that I can actually stick with: basic notes, low friction, and enough information that a future me or a future doctor can see what’s going on without needing a magnifying glass.
If you’ve tried the hyper detailed way and bounced off it, that doesn’t mean food journaling “isn’t for you.” It might just mean you need a simpler version that respects your sanity as much as your health.