How Garlic Keeps Your Blood Sugar and Cholesterol Low
Adding some garlic to your diet has been
found to lower blood sugar and cholesterol levels. A new meta-analysis, a
research approach that combines data from many studies, revealed
favorable findings on garlic intake.
Researchers from Southeast University and Xizang Minzu University in
China examined 22 previous studies, which included 29 randomized
controlled trials. Their findings suggest that frequent garlic
consumption may be linked to lower blood sugar levels and lower amounts
of certain cholesterol types.
Blood sugar and blood lipids, primarily
glucose and cholesterol, are essential elements for human health.
Glucose is the body's major source of energy, whereas lipids are the
building blocks for cell membranes and hormones. However, modern dietary
habits can contribute to an imbalance in these essential components,
leading to an increased risk of various health issues. Furthermore,
lifestyle choices other than diet can significantly affect blood sugar
and cholesterol levels, such as alcohol consumption and exercise
patterns.
Glucose and lipid metabolisms are
meticulously controlled in healthy individuals, as noted by the
researchers in their published paper. "Disorders of glucose and lipid
metabolism can lead to a number of chronic diseases, including
atherosclerosis, diabetes and fatty liver disease," they add.
Garlic has a long history of being associated with good health. Previous
research, albeit conducted in isolation, suggested that it may have a
role in regulating blood lipids and glucose levels. This new study
builds upon this existing body of evidence.
Analysis of the cumulative studies validated the benefits of garlic
consumption. Individuals who incorporated garlic into their diet had
significantly lower blood glucose levels, indicating better long-term
control. They also saw an increase in HDL (good) cholesterol, a drop in
LDL (dangerous) cholesterol, and a reduction in total cholesterol
levels.
Interestingly, triglyceride levels did not
appear to be considerably affected. However, it is important to
acknowledge that the current evidence cannot conclusively prove a
cause-and-effect connection. In other words, we can't say for certain
that eating more garlic lowers the risk of heart disease.
However, the association strongly suggests that including garlic in our
diets might be a delicious way to manage glucose and cholesterol levels.
Further research with more focused studies is needed to explain the
precise mechanisms at play. The studies included in the meta-analysis
used various types of garlic, such as fresh cloves, aged extracts, and
powdered pills, with durations ranging from three weeks to a year.
"The results showed that garlic has a
beneficial effect on blood glucose and blood lipid in humans, and their
association was statistically significant," write the researchers.
The association between garlic consumption and improved cardiovascular
health and blood sugar control is believed to be a result of the
combined action of various active ingredients present in garlic. One
important role is to reduce oxidative stress, which causes cellular
damage and can lead to conditions such as cardiovascular disease.
Garlic also contains alliin, an antioxidant
molecule associated with blood glucose, blood lipids, and the gut
flora. The combined impact of these processes is likely responsible for
the favorable results seen in the study.
The importance of diet in influencing
health outcomes, both positive and negative, is undeniable. This new
study provides further reasons to incorporate garlic into our diets.
“[The study] provides new ideas for the development of natural products
against diseases related to glycolipid metabolism,” write the
researchers.
The research has been published in Nutrients.