Next Up

What Nutrition Experts Really Think About the Keto Diet

See why elements of the trendy diet are potential causes for concern.

1 / 11
Photo: tbralnina/Getty

The Keto Issue

It seems like everyone is hopping on the keto bandwagon, but not all nutritionists are on board. We spoke to 10 nutrition experts from around the country to find out their thoughts on this high fat, moderate protein and very low carb diet.

More photos after this Ad

2 / 11
Photo: ericsphotography/Getty

It Eliminates Most Fruit

"I'm not a fan of the Keto diet because it eliminates most fruits, which are powerhouses of many nutrients, vitamins and minerals," says Jonathan Valdez, owner of Genki Nutrition and media spokesperson for New York State Academy of Nutrition and Dietetics. "Nutrients mostly found in fruits include magnesium, potassium, folic acid, and vitamins A, E and C. Studies have found that adequate fruit consumption is associated with lower risks of cardiovascular diseases, cancer, obesity, osteoporosis, high blood pressure, depression, respiratory diseases and gastrointestinal diseases. While on the keto diet, you're at greater risk of heart disease and stroke. Who wants that?"

More photos after this Ad

3 / 11

It's Too Rigid

"In order to transfer into and remain in a state of true ketosis, people have to count grams of carbohydrates, eliminate major food groups, be watchful over protein intake and even limit food choices within allowed food groups," says Malina Malkani, MS, RDN, CDN, media spokesperson for the Academy of Nutrition and Dietetics and creator of the Wholitarian Lifestyle. "For many, this rigidity can be very hard to maintain in the long term, especially in the context of social lives. While we have solid evidence establishing the effectiveness of the keto diet for weight loss in the short-term, the long-term efficacy and health implications are not yet known. Without a long-term solution in place, the likelihood of returning to pre-keto eating habits and regaining lost weight is high."

More photos after this Ad

4 / 11
Photo: Ciaran Griffin/Getty

It Recommends Full-Fat Dairy Only

"I recommend all dairy foods, regardless of the fat content," says Keith Ayoob, EdD, RDN, associate professor emeritus of pediatrics at Albert Einstein College of Medicine. "Whether it's milk, cheese or yogurt, the protein, vitamins and minerals are the same, making these foods incredibly nutrient-rich. I know of no advantage of full-fat dairy over low-fat or fat-free dairy foods. There is no reason to give up any of them." Ayoob explains that milk and dairy foods have been found to be inversely linked to obesity. While low-fat and full-fat are fine, the higher-fat dairy foods will have more calories, so some balancing elsewhere in the diet will is necessary to prevent weight gain.

More photos after this Ad

Next Up

We Recommend