A new study on mice is offering a word of caution about the long-term effects of the ketogenic diet, particularly for endurance athletes or those considering it for overall health. While the keto diet, characterized by high fat, very low carbohydrate intake, has gained popularity for its potential to promote weight loss and improve blood sugar control, the research highlights potential downsides that warrant consideration.

The study, conducted on a group of laboratory mice, investigated the impact of a long-term ketogenic diet on their cardiovascular health and overall physical performance. Researchers observed that while the mice initially experienced some of the expected benefits of the diet, such as weight loss and improved metabolic markers, these benefits were accompanied by concerning changes in their heart function and exercise capacity over time.

Specifically, the study pointed to a potential reduction in the heart's ability to efficiently pump blood, a crucial function for maintaining overall health, especially during periods of increased physical exertion. Furthermore, the researchers noted a decline in the mice's endurance performance, suggesting that the keto diet, in the long run, may not be the optimal fueling strategy for activities requiring sustained physical effort.

It's important to note that this research was conducted on mice and the findings may not directly translate to humans. However, the study serves as a valuable reminder that dietary choices can have complex and far-reaching effects on the body. Experts emphasize the need for further research to fully understand the long-term implications of the ketogenic diet on human health, particularly concerning cardiovascular function and athletic performance.

The research team suggests that individuals considering a long-term ketogenic diet, especially those with pre-existing heart conditions or those who engage in regular endurance exercise, should consult with a healthcare professional or registered dietitian. These professionals can help assess individual risks and benefits and provide personalized guidance on safe and effective dietary strategies. While the keto diet may offer some benefits for certain individuals, this study underscores the importance of a balanced and informed approach to nutrition, considering both short-term gains and potential long-term consequences.