Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Ketosis is a metabolic state where your body runs primarily on fat for energy, instead of carbohydrates. You achieve ketosis by eating a very low-carb diet. Whether you were intending to eat a ketogenic diet or not, if you don’t make an effort to eat any tubers or fruits, you might end up accidentally taking Paleo in a ketogenic direction. And one of the best-known side effects of ketosis is loss of appetite. There’s nothing necessarily wrong with this – it’s one of the reasons why ketogenic diets can be so great for weight loss. If you want to lose weight or don’t mind the appetite loss, then just sit back and enjoy the hunger-free ride! On the other hand, if you weren’t trying to lose weight, this can be a problem. For an athlete going Paleo to improve the health, for example, a ketogenic diet can be a disaster: suddenly, they aren’t eating enough to fuel their workouts, and performance goes down the drain. The fix for this is simple: try adding some more safe starches into your diet and see how you feel. You might find that your appetite comes back all on its own. Another potential cause for a loss of appetite is that you are hungry; you just don’t realize it. You’re not hungry in your stomach. But do you get tired, grumpy, cranky, or scatterbrained – and then notice that the problem improves as soon as you eat? In that case, your body is still telling you to eat more – just for whatever reason, the signal isn’t coming through your stomach. Instead of waiting until your stomach starts rumbling, start paying attention to your concentration and mood. Can’t focus on anything? Or are you snapping at everyone around you? Maybe it’s been a little too long since your last meal. This can take a few weeks to get used to, but once you get the hang of it, it’s not any harder than waiting to feel stomach hunger. Some suggestions: 1. Go for calorie-dense foods. Don’t fill up on cucumbers and lettuce. Instead, choose healthy, high-energy foods like avocados and fatty meats: that way, you don’t have to choke down a huge quantity of food when you don’t feel hungry. 2. Smaller, more frequent meals may help. Also try replacing a meal with a high-calorie smoothie – maybe made with coconut milk and honey to pack in some fat and carbs. Liquid calories often go down easier than solid. 3. Enlist some help. Can you get your family or friends to help you remember to eat? 4. Plan, plan, plan. If you’re not hungry, you won’t remember to eat on your own. Set a schedule and use reminders or food tracking tools to keep you compliant with your eating goals. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr Sanjay Kini