Drinking From the Fire Hose: How Do You Keep Up When Health Advice Won't Sit Still?
Ten years ago, I was sure I was doing the right thing. I bought the low-fat versions of everything. I'd never heard the term "ultra-processed food." I didn't think twice about modified corn starch or how much sugar was hiding in foods that didn't even taste sweet.
I wasn't careless. I was following the advice. That's what bothers me now.
"Medical knowledge doubles every 73 days"
A while back I came across a striking claim. A physician writing in 2011 estimated that the doubling time of medical knowledge was about 50 years in 1950, seven years in 1980, three and a half years in 2010, and projected it would shrink to just 73 days by 2020.
I should be honest: that 73-day number was a projection, not a measurement, and some researchers think the real pace is a lot slower. But whatever the exact figure, the point lands. A doctor who graduated in 1950 could mostly coast on what he learned in school. Today, nobody can read everything being published. Not your doctor. Not me. Not anyone.
The idea is fascinating and a little frightening. If the story can change that fast, what am I supposed to believe?
Then I went shopping for turmeric
I've been dealing with some joint pain, and turmeric gets talked about constantly for inflammation. So I started looking at supplements.
What I found stopped me cold. Turmeric is one of the more commonly adulterated products out there. A recent review of the research on turmeric adulteration found that problems show up in both supplements and the plain spice: undeclared fillers like cornstarch, artificial dyes to make it look brighter, and lab-made synthetic curcumin sold as if it came from the root. In parts of South Asia, some processors have even used lead chromate, an industrial yellow pigment, to brighten the color. A Stanford-led study tied that practice to lead exposure in Bangladesh.
Black pepper has its own version of this. Researchers have developed DNA tests specifically to catch ground black pepper cut with dried papaya seeds and chili.
Not every bottle or jar is fake. Plenty are fine. But I had no way of telling which was which by looking at the label. It almost feels criminal.
So how do you know what to keep up with?
Here's where I've landed, and it's what my book is really about.
You can't keep up with all of it, and you don't have to. Most of what changes fast is the noise: the new superfood, the new supplement, the headline study that gets reversed two years later. The fundamentals move slowly. When I look back at what I got wrong ten years ago, the corrections mostly pointed in one direction: back toward real food, and away from engineered products built to be sold.
So instead of chasing every new finding, I ask a few questions:
Who's paying for this message? Follow the money before you follow the advice.
Is this one study, or a lot of them pointing the same way? One exciting result is a reason to watch, not a reason to change your life.
Is someone selling me something? The louder the pitch, the more skeptical I get.
Is this food, or a product? A short ingredient list I can pronounce beats a long one I can't.
Can anyone vouch for it? In the U.S., supplements don't need FDA approval for effectiveness before they're sold. If I buy one, I look for independent third-party testing, like USP or NSF certification, instead of trusting the label.
And sometimes the simplest move is the oldest one: buy the whole spice and grind it yourself.
Fascinating and frightening
I still feel overwhelmed some days. I don't think that feeling is a personal failure. I think it's partly by design. A confused shopper is easier to sell to.
That's the reason I wrote We're Not Sick, We're Being Sold. Not to give you one more list of foods to fear, but to help you see how the system works, so you can stop chasing every headline and start trusting your own judgment again.
You don't need to know everything. You need to know who's talking, and why.
Facts and figures in this post are drawn from published research and news coverage; sources available on request.