Two different answers ! As far as calories while restricting carbs , it can be hard , but the answer is healthy fats . I have the issue where I ' m on verylow carb diet so I can control BG , but I have a hard time eating enough calories so I ' m constantly losing weight . Anyhow , on days I do better , here are my solutions and 75 g of carb is actually pretty generous . you can do itHealthy fats to add to meals 1 . grassfed butter seriously , only doctors who haven ' t read a journal in 10 years think butter is unhealthy anymore 2 . eggs , eggs , and more eggs same , see above 3 . olive oil for cooking and on everything 4 . coconut oil for baking , in coffee instead of milk , etc . 5 . nuts , nuts , and more nuts as snacks . actual tree nuts tend to be high in fats and low in nonfiber carbs almonds , macadamia nuts , hazelnuts , brazil nuts , walnuts , and pecans are magic 6 . cheese high quality cheeses have negligible amounts of carbs , especially when aged , and are roughly half fat and half protein by weightAdd some of those items to every meal and it adds up . I eat at least one omelette a day with bacon , cheese , and spinach of 3 or 4 eggs . I eat salads with poachedroasted chicken , blue cheese , blue cheese dressing , chopped eggs , crumbled bacon , and sunflower seeds . I ' ve managed to make 1 , 200 calorie salads Add an avocado for even more healthy fats and calories . As for the second question constipation , you ' re probably not getting enough fiber in the carbs you do eat . I eat less than 45 g carbs a day , but half of those are from fiber . Sometimes makes me too regular . Anyways , there are ways to get more fiber while adding good taste . 1 . Some preserved olives have fiber as ~ 100 % of the carb content otherwise fats check labels 2 . Kirkland protein bars or Quest bars are sweetened with Erythritol no effect on my blood glucose and have 15 g of inulin , and also have 20 g of protein . Excellent for after exercise and helping to stay regular I eat one a day . Inulin from chicory is a soluble fiber that will raise BG , so I account for the full 19 or 20 g of carbs in the bars even though mostly fiber . 3 . You can get certain kinds of lowcarb breads which have ridiculously high fiber contents so they can claim low net carbs . These are deceptive , in the sense that while they say 6 g net carbs , they ' ll raise your BG like they have 25 or 30 . Because they do , but much of that carb content is fiber . Best or worst example I can think of is Mission lowcarb tortillas . They taste like actual flour tortillas , and they are ultrahigh fiber . Eat one of those a day experiment to see how many of the carbs you have to bolus for and you ' ll be up there in the 2030 g of fiber per day . I ' ve actually had to cut back on my fiber consumption because I ended up with diarrhea . Brought down my fiber consumption to between 1020 g per day , and that keeps me where I need to be . Usually no more than 46 g of total , gross carbs including fiber per day keeps my BG easy to manage . Everyone wins .