Top 17 low-carb and keto controversies – Diet Doctor


It is common for people to be skeptical of a low-carb diet in the beginning, especially since high-carb, low-fat advice has been so prevalent for decades.

We don’t want any unsubstantiated fears to get in the way of people reaping the benefits of a low-carb diet. In this guide, you will learn why many of these controversies are based on misunderstandings or incomplete knowledge.

However, our goal of making low carb simple also requires us to be upfront and honest about potential problems and how to handle them; some adverse effects can and do occur on low carb.

Here are the most common controversies about low carb and what the best available scientific evidence can tell us about them.

1. Will saturated fat clog my arteries and give me a heart attack?

time-saturated-fat-butter-cover-smNo. This is probably one of the biggest nutrition myths of the last few decades.

First of all, the mechanisms by which we develop heart disease are not analogous to the way a sink develops a clog. There are many potential contributing factors to the development of heart disease, including genetics, inflammation, and metabolic health conditions, such as diabetes. Further, the interaction of diet with these other variables can vary greatly from one individual to another.

In terms of scientific evidence, links between saturated fat and heart disease are weak and inconsistent. Although some reviews of the literature do find a weak relationship, an increasing number of meta-analyses and systematic reviews find that there is no significant connection between saturated fat and heart disease. The weakness of the evidence against saturated fat is catching on in the mainstream media as well.

Because the evidence is so weak and because the individual response to dietary fats varies significantly, population-wide recommendations to avoid saturated fat may have been a mistake.

A user guide to saturated fat

Watch doctors explain why saturated fat is neutral