A 20-year South Korean cohort study found moderate kimchi intake was associated with lower cholesterol risk in men and better HDL outcomes in women, though researchers found no significant benefit for LDL or triglycerides.
By yourNEWS Media Newsroom
Eating one to two servings of napa cabbage kimchi each day was associated with a sharply lower risk of high total cholesterol in men, according to long-term data from a South Korean cohort study that examined the relationship between fermented cabbage and blood lipid health.
The findings came from the Ansan-Anseong cohort study, a community-based research project that followed 4,666 South Korean adults between the ages of 40 and 69 beginning in the early 2000s. Participants were tracked every two years through 2020, giving researchers nearly two decades of dietary and health data to analyze.
The study found that men who consumed one to two daily servings of baechu kimchi, the napa cabbage variety, had a 39% lower risk of developing high total cholesterol compared with men who ate the least. Among women, the same level of daily intake was associated with about a 20% lower risk of low HDL cholesterol, often called “good” cholesterol. Women who ate three or more servings per day had a 22% lower risk of low HDL.
The study did not find significant effects on LDL cholesterol or triglycerides in either men or women. Researchers also found that eating more than two servings per day did not consistently produce stronger benefits for most cholesterol markers.
The research focused on incident dyslipidemia, a broad category that includes high total cholesterol, high LDL cholesterol, low HDL cholesterol and elevated triglycerides. Researchers used a validated 103-item food frequency questionnaire to measure participants’ diets and specifically examined several types of kimchi, including baechu, or napa cabbage kimchi; kkakdugi, or radish kimchi; water kimchis such as nabak and dongchimi; and other varieties among the more than 200 known styles of the fermented food.
The strongest association was found with napa cabbage kimchi. For men, the apparent benefit was concentrated in total cholesterol. For women, the association was tied to HDL cholesterol rather than total cholesterol.
Researchers said the results support moderate kimchi consumption as part of a broader diet, but they cautioned that the study was observational and cannot prove cause and effect. The findings show an association between kimchi intake and cholesterol-related outcomes, not definitive proof that kimchi directly caused the changes.
The study’s authors also noted that the results came from Korean adults ages 40 and older, meaning the findings may not apply in the same way to younger adults or to people with different diets and lifestyles.
Kimchi’s possible cholesterol-related effects may be linked to its fermentation process. Fermented vegetables contain lactic acid bacteria, including Lactobacillus, Weissella and Leuconostoc strains, which have been studied for their potential role in reducing cholesterol absorption in the gut. Fermentation can also produce short-chain fatty acids, which may influence lipid regulation.
Other ingredients in kimchi may also contribute. Garlic contains allicin, while red pepper provides antioxidant compounds. Researchers said those components could play a role alongside the fermented cabbage itself.
The study also found limits to the benefit. Higher consumption did not reliably improve cholesterol outcomes beyond the one-to-two-serving range, and no meaningful association was found for LDL cholesterol or triglycerides. Those findings complicate broad claims that all kimchi intake improves all cholesterol markers.
Sodium is another consideration. Kimchi can be high in salt, which may matter for people managing blood pressure or other cardiovascular risk factors. One to two servings generally equals about a quarter cup to one full cup daily, or about 50 grams for cabbage or radish kimchi and 100 grams for water-based varieties.
Researchers said sex-specific differences may help explain why men and women showed different cholesterol patterns. Hormonal factors, including estrogen changes in postmenopausal women, may influence HDL cholesterol and could partly explain why women appeared to benefit most in that category.
The findings suggest that moderate consumption of napa cabbage kimchi may be associated with improved cholesterol risk markers for some adults, particularly lower total cholesterol risk in men and reduced risk of low HDL in women. However, the study also makes clear that kimchi is not a universal cholesterol solution and should be considered within the context of overall diet, sodium intake and individual health needs.
Source: Natural News
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