New York : Higher intake of citrus fruits like oranges and lemons can help keep you healthy as well as prevent harmful effects of obesity related heart disease, liver disease and diabetes, a study has found.
Citrus fruits contain large amounts of antioxidants, a class of which are called flavanones.
When humans consume a high-fat diet, they accumulate fat in their bodies. Fat cells produce excessive reactive oxygen species, which can damage cells in a process called oxidative stress.
These oxidative stress coupled with inflammation in obese individuals increases the risk of developing heart disease, liver disease and diabetes, the researchers said.
“Our results indicate that in the future we can use citrus flavanones to prevent or delay chronic diseases caused by obesity in humans,” said Paula S. Ferreira, a graduate student at Universidade Estadual Paulista (UNESP) in Brazil.
However, “the study did not show any weight loss due to the citrus flavanones,” added lead researcher Thais B. Cesar from UNESP.
Even without losing weight, citrus fruits can help become healthier with lower oxidative stress, less liver damage and reduce risks of other obesity-related diseases, the researchers noted.
“The study also suggests that consuming citrus fruits probably could have beneficial effects for people who are not obese, but have diets rich in fats, putting them at risk of developing cardiovascular disease, insulin resistance and abdominal obesity,” Ferreira explained.
For the study, the team conducted an experiment with 50 mice, treating them with flavanones found in oranges, limes and lemons, or a high-fat diet.
They focused on flavanones such as hesperidin, eriocitrin and eriodictyol. For a month, researchers gave groups a standard diet, a high-fat diet, a high-fat diet plus hesperidin, a high-fat diet plus eriocitrin or a high-fat diet plus eriodictyol.
The group who consumed high-fat diet without the flavanones showed increase in the levels of cell damage markers called thiobarbituric acid reactive substances (TBARS) by 80 per cent in the blood and 57 per cent in the liver compared to mice on a standard diet.
But hesperidin, eriocitrin and eriodictyol were found to decrease the TBARS levels in the liver by 50 per cent, 57 per cent and 64 per cent, respectively, compared with mice fed on a high-fat diet but not given flavanones.
Eriocitrin and eriodictyol also reduced TBARS levels in the blood by 48 per cent and 47 per cent, respectively, in these mice.
In addition, mice treated with hesperidin and eriodictyol had reduced fat accumulation and damage in the liver.
The findings were presented at the 252nd National Meeting and Exposition of the American Chemical Society (ACS), held in Philadelphia, recently.
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