BANANA BENEFITS
In a small-scale informal survey, 4 girls and 3 boys aged 5-7 were
asked if they liked to eat banana. 75% of the girls liked to eat
banana but only 33% of the boys liked to eat banana. And, most of
them didnÂ’t know the benefits of banana.
Banana has a lot of health benefits. It is a rich source of potassium,
dietary fiber, manganese, Vitamins B6 and C. A few suppliers claim that
bananas are also a rich source of fructooligosaccharide.
Fructololigosaccharide is prebiotic because it nourishes probiotic
(beneficial) bacteria in the colon. These beneficial bacteria produce
vitamins and digestive enzymes. These digestive enzymes improve our
ability to absorb nutrients including calcium and the compounds that
may protect us against pathogens. In addition, banana may lessen the
gastrointestinal transit time, which may decrease the risk of colon
cancer. [1] On the other hand, a recent issue of FDA consumer
magazine recommends bananas as a potassium-rich food because
potassium counteracts some of sodium's effect on blood pressure. [2]
Banana is also found to be a rich source of provitamin A carotenoids.
Researchers studied the carotenoid content of frozen samples of the
edible flesh of 12 banana varieties. They found huge variations of the
carotenoid content and (retinol activity equivalents) among the
varieties: total carotene levels ranged from 150 to 2176microg and
(retinol activity equivalents)/100g from 8 to 130. [7]
BananaÂ’s antioxidant and anticancer activities.
In a study using TOSC assay, researchers found the antioxidant activity
of banana. In another study, banana showed an inhibitory effect on
human liver-cancer cells
\Researchers from Karolinska Institutet, Sweden, collected dietary
information from 61,000 women age 40-76 years by a food-frequency
questionnaire. They found that those who consumed more than 75
servings per month of fruits had multivariate relative risk of 0.59
compared to those consuming 11 or less servings per month. And, the
strongest inverse association was observed for banana. [3]
In Thailand, researchers interviewed 279 patients suffered from
colorectal cancer compared to 279 hospital controls with other cancers
except gastrointestinal cancer with regard to bowel pattern information,
family history, past history of illness and dietary information. They
concluded that a protective effect provided by banana and papaya on
colorectal cancer. Bacon and butter increased the risk for colorectal
cancer. Nitrite-treated meat increases colorectal cancer risk while
dietary fiber decreases colorectal cancer risk. [5]
Banana helps diarrhea in critically ill tube-fed patients
In a study, 31 patients with diarrhea and receiving enteral feedings
were randomized to receive either banana flakes or medical treatment
for diarrhea. The researchers found that the banana flake group had
less diarrhea clinically, with 57% of the subjects diarrhea free on their
last study day as opposed to 24% of the medically treated subjects. [4]
Banana pulp helps cholesterol, research finds
In a study of male rats on a diet containing lard (50 g/kg) and
cholesterol (5 g/kg), freeze-dried banana pulp (Musa sapientum L. var.
Cavendishii) showed a marked cholesterol-lowering effect when
incorporated into a diet at the level of 300 or 500 g/kg, while the hot-air
dried banana pulp did not show the effect. [8]
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REFERENCES
[1] Bananas, The worldÂ’s healthiest foods, Online publication. Sept 20, 2005.
[2] FDA Consumer magazine, Online Publication, Issue May-June 2005 Issue,
Sept 20, 2005 [3] Rashidkhani B et al, Fruits, vegetables and risk of renal cell
carcinoma: a prospective study of Swedish women. Int J Cancer. 2005 Jan 20;113
(3):451-5.. [4] Emery EA et al, Banana flakes control diarrhea in enterally fed
patients. Nutr Clin Pract. 1997 Apr;12(2):72-5. [5] Lohsoonthorn P and Danvivat
D Colorectal cancer risk factors: a case-control study in Bangkok. Asia Pac J Public
Health. 1995;8(2):118-22. [6] Sun J et al, Antioxidant and antiproliferative
activities of common fruits. J Agric Food Chem. 2002 Dec 4;50(25):7449-54. [7]
Blades BL et al, Bananas and plantains as a source of provitamin A. Asia Pac J
Clin Nutr. 2003 Nov;12(Suppl):S36. [8] Horigome T et al, Hypocholesterolaemic
effect of banana (Musa sapientum L. var. Cavendishii) pulp in the rat fed on a
cholesterol-containing diet. Br J Nutr. 1992 Jul;68(1):231-44.

