Without the hard data from the actual study (not some journalist's spin on it), it's difficult to conclude much from the article.
For example, were the observations of calcium loss and low energy present for the entire duration of the study or only the first few weeks? The article implies it was an ongoing problem, but I'd be willing to bet that both of those issues were only present in the first 2-4 weeks of the study for the KLC diets.



A good source of potassium is dark leafy greens such as spinach and kale which you can eat a lot of on a low carb plan and still stay low carb. Avocados are also a good source of potassium without all the carbs of bananas and/or canteloupe. Guacamole, anyone?