The ketogenic diet isn’t right for everyone. People who are pregnant, breastfeeding, or about to undergo surgery shouldn’t try the keto diet. People with chronic health conditions, especially those with liver, kidney, and respiratory failure, should check with their doctor before starting a keto diet.
If you’re cleared to do keto, you’ll start off by cutting out most carbs and eating a diet that’s high in fat and moderate in protein. Most people can achieve a state of ketosis within two to seven days of following a low-carb diet. However, the exact timing varies based on individual factors such as physical activity, metabolism, and previous food habits, Sheth says.
“Some of the signs of being in ketosis include reduced appetite, mild fatigue, and flu-like symptoms (keto flu), but these often subside,” Sheth says.
Is Ketosis Safe for People With Diabetes?
The ketogenic diet can be a safe option for those with type 1 or type 2 diabetes — but only under careful management. “Anyone considering a keto approach with diabetes should consult with their healthcare team, especially a dietitian, to discuss food choices, concerns, and safety, including medication adjustments, especially insulin, to prevent hypoglycemia and to ensure stable blood sugar levels,” Sheth says.
While the ketogenic diet may provide benefits for those managing diabetes, it’s important to follow it with professional guidance. You’ll need to actively monitor your ketone levels while on the diet using urine ketone strips, breath analyzers, or blood ketone meters. “Monitoring for ketones regularly is very important — especially when blood sugar levels are high — to reduce the risk of DKA,” Sheth says.
