The ketogenic diet has become popular.
Studies have found that this very low carb, high fat diet is effective for weight loss, diabetes, and epilepsy (1Trusted Source, 2Trusted Source, 3Trusted Source).
There’s also early evidence to show that it may be beneficial for certain cancers, Alzheimer’s disease, and other diseases, too.
Still, higher quality research on the diet is still needed to determine its long-term safety and efficacy (1Trusted Source, 4Trusted Source, 5Trusted Source).
A ketogenic diet typically limits carbs to 20 to 50 grams per day. While this may seem challenging, many nutritious foods can easily fit into this way of eating.
Here are some healthy foods to eat on a ketogenic diet.
1. Seafood
Fish and shellfish are very keto-friendly foods. Salmon and other fish are rich in B vitamins, potassium, and selenium, yet virtually carb-free (6Trusted Source).
However, the carbs in different types of shellfish vary. For instance, while shrimp and most crabs contain no carbs, other types of shellfish do (7Trusted Source, 8Trusted Source).
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.
Here are the carb counts for 3.5-ounce (100-gram) servings of some popular types of shellfish (9Trusted Source, 10Trusted Source, 11Trusted Source, 12Trusted Source, 13Trusted Source):
- clams: 4 grams
- mussels: 4 grams
- octopus: 4 grams
- oysters: 3 grams
- squid: 3 grams
Salmon, sardines, mackerel, and other fatty fish are very high in omega-3 fats, which have been found to lower insulin levels and increase insulin sensitivity in people who have overweight and obesity (14Trusted Source).
In addition, frequent fish intake has been linked to a decreased risk of disease and improved cognitive health (14Trusted Source, 15Trusted Source).
The American Heart Association recommends consuming 1 to 2 seafood meals every week (16Trusted Source).