Cocoyam, like unripe plantain, good for diabetics —Study
Unripe plantain and cocoyam flour have always been valued in folkloric medicine because of its ability to lower blood sugar. Now, experts have established the potentials of cocoyam or unripe plantain in the lowering of high levels of fats, such as cholesterol, in the blood.
In a new study, researchers found cocoyam and unripe plantain helping to ensure low levels of blood and fat, and as such helpful in the management of diabetes and its complication.
However, a combination of cocoyam and unripe plantain do not confer the same protection against diabetes and its complications as either cocoyam or unripe plantain flour.
Good blood sugar control can help prevent or slow the progression of some of the main medical complications of diabetes. The risk of complications of diabetes directly increase with increased sugar and fat blood levels. They are bad for health.
When blood sugar rises in non-diabetic people, the body produces insulin. It helps the body move sugar out of the blood and into the cells where it’s used or stored.
However, this process doesn’t work as it should in diabetics. Instead, either the body doesn’t produce enough insulin or the cells are resistant to the insulin that is made.
The 2016 study published in the journal, Pharmaceutical Biology by Eleazu CO; Eleazu KC; and Iroaganachi MA, was aimed at investigating the possibility of combining unripe plantain and cocoyam in the management of diabetes.
For the study, the researchers compared the blood sugar and fat lowering effects of unripe plantain with cocoyam as well as their combination in 48 rats made to develop diabetes.
Twelve days after the rats were made to develop diabetes, respective groups of diabetic rats were fed same amount of cocoyam, unripe plantain, and a combination of unripe plantain and cocoyam for 28 days.
Several tests, including body weights, feed intake, blood sugar level, total cholesterol, high-density lipoprotein (HDL), low-density lipoprotein (LDL) were measured in the diabetic rats.
There were significant decreases in the blood sugar levels of the diabetic rats compared with the non-diabetic rats, while the blood sugar levels of the diabetic rats fed with cocoyam, unripe plantain, or their combination were significantly lower in comparison with the diabetic rats.
Furthermore, the blood sugar levels of the diabetic rats given cocoyam or unripe plantain feeds was not significantly different from that of the non-diabetic rats.
Feeding of cocoyam, unripe plantain, or their combination to the diabetic rats , resulted in a significant reduction in the formation of fatty deposits in the blood vessels carrying blood away from the heart and coronary risk indices compared with the diabetic rats.
In addition, the diabetic rats fed with cocoyam, unripe plantain, or their combination recorded significant reduction of their total fat level, including the bad cholesterol, but a significant increase in the level of good cholesterol, compared with the diabetic control rats.
High blood fat level, especially bad cholesterol, is associated with increased risk for heart disease.
However, cocoyam or unripe plantain showed better blood fat lowering action than when combined at the dosage used in this study.
Meanwhile, the diabetic rats fed with cocoyam recorded 18.89 per cent loss of weight, the diabetic rats fed with unripe plantain recorded 19.95 per cent loss of weight, the diabetic rats fed a combination of unripe plantain and cocoyam recorded 28.53 per cent loss of weight compared with the diabetic-control rats that recorded 31.21 per cent loss of weight, unlike the non-diabetic rats that recorded 15.50 per cent gain in weight.
The researchers stated that the increased body weights of the diabetic rats fed with cocoyam or unripe plantain compared with the diabetic-control rats showed the protective action of cocoyam or unripe plantain against muscle wasting, suggesting that control over muscle wasting may have resulted from the blood sugar control.
Previously, scientists looking into the effectiveness of ethanol extracted from plantain in lowering blood pressure, discovered that it had similar effects to metformin – the conventional blood sugar medicine.
In a 2011 study published in the Journal of Pharmacy Research, the scientists stated that fasting blood glucose level was significantly reduced by the third day of treatment with ethanol extract of plantain trunk.
It was also found that the methanolic extracts from the unripe fruit of plantain had the potential to lower blood sugar levels.
The researcher suggested that the blood-sugar lowering effect of the methanolic extract of the unripe plantain might be due to the extract at least in part stimulating insulin production and subsequent glucose utilisation.
Meanwhile, many other foods items such as beans, green vegetables, oatmeal, okro and fruits high in vitamin C are named to control Type 2 Diabetes.
In a recent study conducted at the University of Pennsylvania, experts named green tea as containing an antioxidant EGCG that can help to maintain the flexibility of blood vessels and stabilising blood glucose levels.
According to a study published in the British Medical Journal fresh green leaves vegetables such as lettuce, cabbage, spinach and other green vegetables improves insulin sensitivity and thus better regulate blood glucose levels.