Robert F. Kennedy Jr.'s distinctive diet, which prominently features sauerkraut, has captured public attention. The regimen, reportedly instrumental in his 20-pound weight loss over 30 days, involves consuming large amounts of the fermented cabbage, often paired with grass-fed meat, and is referred to by its advocate, Dr. Sean O’Mara, as the Living Diet.
Kennedy's wife, actress Cheryl Hines, has described his dedication to the diet, noting he eats steak and sauerkraut before 7 a.m. and sometimes carries sauerkraut in her purse for him. Reports indicate Kennedy brings his own supply of sauerkraut to restaurants and travels with coolers of it.
The Living Diet, as promoted by O'Mara, aims to improve gut health and metabolism, potentially aiding in weight loss and reducing visceral fat. While some public figures, like Secretary of State Marco Rubio, have expressed skepticism about the diet's sustainability for themselves, others, including Commerce Secretary Howard Lutnick and Transportation Secretary Sean Duffy, are reportedly adopting elements of it.
Health Benefits of Sauerkraut
Sauerkraut, fermented cabbage with origins tracing back thousands of years, is a traditional food in many cultures, including Eastern European and Korean (kimchi) and Salvadoran (curtido) cuisines. Cabbage itself is a source of vitamin C, vitamin K, and dietary fiber. The fermentation process can enhance the bioavailability of certain nutrients, such as some B vitamins.
Registered dietitians note that sauerkraut is low in calories and rich in potassium and beneficial plant compounds. Importantly, raw, unpasteurized sauerkraut contains probiotics, which are beneficial live bacteria that can support a diverse gut microbiome and improve digestive health. The fermentation process also breaks down cabbage, making it easier to digest than raw cabbage. Research suggests sauerkraut may also contribute to cardiovascular health by potentially reducing systolic blood pressure, and it may support the immune system.
Considerations and Potential Drawbacks
While generally considered healthy for most people when consumed as part of a balanced diet, experts advise caution for certain individuals. There are no official serving guidelines, but a quarter cup per serving is often recommended, with some suggesting half a cup to a cup daily, spread across meals.
People on low-sodium diets should be mindful, as sauerkraut can be high in sodium due to the salt used in fermentation. This could be problematic for individuals managing high blood pressure, heart, or kidney conditions, as excess sodium can contribute to fluid retention.
Individuals sensitive to histamine may experience adverse reactions like migraines, flushing, or digestive issues, as fermented foods can be high in histamine. Those with gastrointestinal conditions such as irritable bowel syndrome or small intestinal bacterial overgrowth (SIBO) might experience gas, bloating, or abdominal pain due to the fiber and fermentable carbohydrates.
Pregnant or immunocompromised individuals are advised to be cautious with homemade or unpasteurized sauerkraut due to the risk of contamination with harmful microorganisms. Additionally, the vitamin K content in sauerkraut could interact with blood-thinning medications like warfarin, and its tyramine content might interact with MAOIs, a type of depression medication, potentially increasing blood pressure. Consulting a doctor is recommended for individuals on these medications before incorporating sauerkraut into their diet.
Integrating Sauerkraut into the Diet
For those new to fermented foods, it is advisable to start with small portions, such as a tablespoon to a quarter cup, and gradually increase intake. A sudden increase in fermented foods can sometimes lead to temporary digestive discomfort as the gut adjusts. When purchasing sauerkraut, consumers are advised to check sodium levels and opt for products with simple ingredient lists, ideally just cabbage, salt, and spices. Sauerkraut intended to retain live cultures is typically found in refrigerated sections and labeled as "raw," "unpasteurized," or containing "live cultures."