Last Updated on June 14, 2026 by Staff
Scientists are learning more about the connection between the gut and the brain. They call this connection the gut-brain axis. It helps the system and the brain talk to each other. This talk affects things, like mood, immunity, metabolism and brain function.
A new study looked at whether the keto diet can help protect the brain from diseases like Alzheimer’s, Parkinson’s, multiple sclerosis (MS) Huntington’s disease and amyotrophic lateral sclerosis (ALS).
This study was published in the journal Translational Neurodegeneration. It looked at studies from the 15 years. The study found that the keto diet may be good for brain health. It helps the body make energy better and reduces processes that hurt the brain.
How Keto Works
The keto diet is a fat low-carb eating plan. It changes how the body makes energy. Normally the body uses glucose from carbs for energy. When carb intake is low the body burns fat for energy.
The liver makes molecules called ketone bodies. These ketones help the brain get energy. This is important for people with brain diseases. Their brain cells have trouble using glucose.
The keto diet also helps the gut. It reduces bacteria and promotes good microbes. This makes the gut healthier.
Fighting Brain Damage
Many brain diseases have problems. They involve the loss of nerve cells in the brain and spinal cord. One major problem is dysfunction. Mitochondria make energy for cells. When they don’t work, the right cells get damaged.
The keto diet may help with these problems. Ketones give energy. Reduce inflammation. They also lower stress. Improve mitochondrial function. This may slow down brain diseases. Protect brain cells.
Clinical Benefits
Researchers looked at animal studies and human trials. The results are encouraging. People with Alzheimer’s got better at remembering things. They also did tasks better and felt better overall.
Patients with Parkinson’s had energy and less fatigue. They also moved better. People with MS, Huntington’s and ALS also saw effects.
The keto diet may also help the body clean itself. This process is called autophagy. It removes cell parts and toxic proteins. This helps keep brain cells healthy.
Challenges Ahead
The keto diet is hard to follow. Some people quit because it’s too strict. Others feel bad when they start the diet. This is called the “keto flu”, the symptoms include headaches and fatigue.
Researchers say more studies are needed. They want to know if the keto diet is a safe and effective term. The evidence so far is promising. The keto diet may help fight brain diseases. It improves energy, reduces inflammation and supports cell repair. This gives hope to people with brain diseases.