By Franziska Spritzler
The ketogenic diet has become quite popular recently.
There's also early evidence to show that it may be beneficial for certain cancers, Alzheimer's disease and other diseases, too.
A ketogenic diet typically limits carbs to 20–50 grams per day. While this may seem challenging, many nutritious foods can easily fit into this way of eating.
Here are 16 healthy foods to eat on a ketogenic diet.
However, the carbs in different types of shellfish vary. For instance, while shrimp and most crabs contain no carbs, other types of shellfish do (5).
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While these shellfish can still be included on a ketogenic diet, it's important to account for these carbs when you're trying to stay within a narrow range.
- Clams: 5 grams
- Mussels: 7 grams
- Octopus: 4 grams
- Oysters: 4 grams
- Squid: 3 grams
Aim to consume at least two servings of seafood weekly.
Summary: Many types of seafood are carb-free or very low in carbs. Fish and shellfish are also good sources of vitamins, minerals and omega-3s.
2. Low-Carb Vegetables
Non-starchy vegetables are low in calories and carbs, but high in many nutrients, including vitamin C and several minerals.
Vegetables and other plants contain fiber, which your body doesn't digest and absorb like other carbs.
Therefore, look at their digestible (or net) carb count, which is total carbs minus fiber.
Most vegetables contain very few net carbs. However, consuming one serving of "starchy" vegetables like potatoes, yams or beets could put you over your entire carb limit for the day.
Low-carb veggies make great substitutes for higher-carb foods. For instance, cauliflower can be used to mimic rice or mashed potatoes, "zoodles" can be created from zucchini and spaghetti squash is a natural substitute for spaghetti.
Summary: The net carbs in non-starchy vegetables range from 1–8 grams per cup. Vegetables are nutritious, versatile and may help reduce the risk of disease.
Cheese is both nutritious and delicious.
There are hundreds of types of cheese. Fortunately, all of them are very low in carbs and high in fat, which makes them a great fit for a ketogenic diet.
One ounce (28 grams) of cheddar cheese provides 1 gram of carbs, 7 grams of protein and 20 percent of the RDI for calcium (20).
In addition, eating cheese regularly may help reduce the loss of muscle mass and strength that occurs with aging.
A 12-week study in older adults found that those who consumed 7 ounces (210 grams) of ricotta cheese per day experienced increases in muscle mass and muscle strength over the course of the study (24).
Summary: Cheese is rich in protein, calcium and beneficial fatty acids, yet contains a minimal amount of carbs.
Avocados are incredibly healthy.
3.5 ounces (100 grams) or about one-half of a medium avocado, contain 9 grams of carbs.
However, 7 of these are fiber, so its net carb count is only 2 grams (25).
Avocados are high in several vitamins and minerals, including potassium, an important mineral many people may not get enough of. What's more, a higher potassium intake may help make the transition to a ketogenic diet easier (26, 27).
In addition, avocados may help improve cholesterol and triglyceride levels.
In one study, when people consumed a diet high in avocados, they experienced a 22 percent decrease in "bad" LDL cholesterol and triglycerides and an 11 percent increase in "good" HDL cholesterol (28).
Summary: Avocados contain 2 grams of net carbs per serving and are high in fiber and several nutrients, including potassium. In addition, they may improve heart health markers.
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