What are the key differences between a ketogenic diet and a low-carb diet? I know they both emphasize reducing carbohydrate intake, but I’m not sure how they compare in terms of health effects, sustainability, and weight loss. Also, which one would you recommend for someone trying to lose weight steadily?
A ketogenic diet and a low-carb diet both indeed limit carbohydrate intake, but they differ primarily in terms of macronutrient distribution and the physiological effects they induce.

A ketogenic diet is very low in carbohydrates, typically restricting it to under 20 to 50 grams per day. The goal is to induce a metabolic state known as ketosis, where your body, depleted of carbs, starts burning fat for energy and produces ketones in the liver to supply energy for the brain. This diet emphasizes high fat intake — about 70 to 75% of daily calories — and moderate protein intake.

A low-carb diet, on the other hand, isn't as strict. Carbohydrate intake can range from 50 grams to 150 grams per day (sometimes even more), and it doesn't necessarily emphasize high fat. Protein is generally more prominent here, and people often use it for controlling blood sugar levels or for steady weight loss.

In terms of health effects, ketogenic diets have been shown to lead to quick weight loss and can improve certain health markers like blood sugar and triglyceride levels. However, they might be harder to sustain long-term, and some people find the ‘keto flu’ (temporary flu-like symptoms from entering ketosis) uncomfortable.

Low-carb diets are generally seen as easier to stick with. They can also promote weight loss and improve health markers, though perhaps not as drastically or quickly as a ketogenic diet.

Before deciding, it's best to consult with a healthcare or diet professional, as they can understand your health background and personal needs better.