Entries by Chet Zelasko

Vitamin D: Stay the Course

Let’s finish this look at the recent paper on vitamin D (1). As you could read in Thursday’s Memo, they included some curious studies in their review. Let’s take a look. Mixed-Purpose Studies Have you ever eaten leftovers? Sure. Did you take all the different leftovers—the spaghetti, the fried rice, the mashed potatoes and gravy—mix […]

A Potpourri of Research on Vitamin D

Scientists try to follow some strict guidelines when they select studies to be included in a meta-analysis. With that in mind, here’s some of what I found in reviewing the studies. Remember, they were looking at fractures, falls, and bone-mineral densities. The length of the studies ranged from as short as eight weeks to as […]

Update: Vitamin D’s Health Effects

With all the political headlines last week, an important health headline could have been overlooked. A group of scientists published a paper suggesting vitamin D doesn’t prevent fractures and falls or help increase bone-mineral density, and they recommended that it not be used for that purpose. I’m a strong believer that vitamin D is one […]

Absolutely True, Relatively Meaningless

In this final Memo about the retraction of several of Dr. Brian Wansink’s publications, there are several important questions that need to be addressed. What do the errors mean? Did Dr. Wansink intend to deceive? Finally, who was making the accusations?   Publication Errors and What They Mean Let’s take a look at the errors […]

The Reasons for Retraction

Publications related to food habits are important if you’re in the weight loss field; I rely on them to help people achieve their weight loss goals. If the studies were poorly done, that’s unfortunate but behavioral science is an inexact science anyway. But if someone intentionally manipulated the data to get a specific outcome, that’s […]

Scientific Retractions

One of my favorite observational scientists has been Dr. Brian Wansink, former Director of the Food and Brand Lab at Cornell University. I’ve written about his research and used it in presentations several times over the years. One of my favorite tips came from one of his studies: use a salad plate instead of a […]

Aspirin and Unintended Consequences

We began the week considering a type of shortcut to health called biohacking. The polypill was a biohack to reduce the risk of CVD events, but there’s no research showing whether the polypill will ever prove to be effective. However, the results of the ASPREE trial may give us an idea whether the long-term trials […]

An Aspirin a Day

In Tuesday’s Memo, I talked about biohacking. Specifically, I talked about the idea of having everyone over a certain age take a pill that can impact the risk factors for CVD: high blood pressure, cholesterol, high heart rate, and blood cell stickiness. The idea is that taking that single pill in low doses every day […]

A Look at Biohacking

One of the terms that have evolved in the health and fitness field that I really dislike is biohacking. Whether related to fitness, nutrition, or supplementation, the implication is that there are shortcuts to get health benefits. I believe that we can do things that are a more efficient use of time but when it […]

What We Can Learn from Kipchoge

There are a couple of lessons that we can get from Eliud Kipchoge and his approach to setting the world record in the marathon. Let’s take a look at what he did to prepare to be called the best marathoner of all time. He Knew It Was Possible When I say he knew it was […]