Limes can Lower Cholesterol, Kill Cholera, Fight Cancer and Repel Mosquitos

Limes are a green citrus fruit that grows on trees in tropical and subtropical climates. Best known for preventing scurvy on ships, they are fairly small, about 3-5cm in diameter and can be either sweet or sour in taste. Sweet limes don’t contain citric acid content; sour limes contain both a higher sugar level and citric acid content than their close cousin the lemon, contributing to their acidic, tart taste. Today, this taste is known and loved by those who enjoy ‘Tequila slammers’ and ‘Margaritas’ around the world.

Originating in Southeast Asia, limes found their way into Egypt and North Africa about 1000 years ago. From here the Moors carried them to Spain and it was during the Crusades that limes were then spread throughout southern Europe. Christopher Columbus triumphantly brought the sour lime to the New World in 1493.

Today, limes are grown in warmer climates, since they are very susceptible to frost, namely the very southern states of America, Mexico, and Brazil. They contain a number of elements particularly helpful to our health, acting as a mosquito repellent, a preventative for cancer and high cholesterol levels and are also highly efficient at reducing the risk of cholera.

Health Benefits of Limes

Nutrients
Limes are an excellent source of vitamin C. They are a good source of vitamin B6, potassium, folic acid and flavonoids.

Cholesterol
Limes and other citrus fruit have also been associated with reducing cholesterol. In lab tests, it has been found that human liver cells produced less apo B, a compound associated with higher cholesterol levels, when exposed to limonin.

Cancer
Laboratory tests of both animal and human cells have shown that citrus limonoids (found in lime and other citrus fruits) can help fight cancers of the mouth, skin, lung, breast, stomach, and colon. Limonen works on the body to increase the levels of liver enzymes involved in detoxifying carcinogens.
New research at the Agricultural Research Service in northern California, has shown that humans can easily use the limonoid called limonin, and therefore enjoy all its health benefits, simply by biting into citrus fruit. One of its main features is that it can stay in the body for up to 24 hours after consumption, making it an effective way to reduce the growth of cancer cells.

Cholera
Studies have shown that the high acid levels in limejuice are very effective in both inhibiting the growth of and killing cholera in food.
In a cholera epidemic in Guinea-Bissau in West Africa in October 1994, lime-rich meals acted as a preventative for patients who consumed them.
In a laboratory controlled preparation of ceviche, large masses of cholera in contaminated fish were eliminated after immersion in limejuice. After 5 minutes of immersion there was a 99% reduction of the initial bacterial mass and after 2 hours no cholera was detected. Thus limes and limejuice are greatly recommended to add to food and sauces in areas where the possibility of cholera is high, like rural and slum populations in the tropics and subtropics.

Mosquito repellent
The volatile oil components extracted from Kaffir lime contains five sesquiterpene hydrocarbons and two sesquiterpene alcohols. Translated into English, lime extract has been shown to be effective as a mosquito repellent for up to three hours.

Nutrient Values of Limes per 100g
Calories 30kcal	Energy Value 126kj	Total Fat 0.20g	Carbohydrates 10.54g	Sugars 1.69g
Dietary Fiber 2.8g	Protein 0.70g	Sodium 2mg	Zinc 0.11mg	Potassium 102mg
Iron 0.60mg	Magnesium 6mg	Copper 0.065mg	Calcium 33mg	Vitamin C 29.1mg
Vitamin E 0.22mg	Vit. B3 (Niacin) 0.200mg	Vitamin B6 0.043mg	Vit. B1 (Thiamin) 0.030mg	Vit. B2 (Riboflavin) 0.020mg

References:
1. The Encyclopedia of Healing Foods by Michael Murray, Joseph Pizzorno, and Lara Pizzorno.
2. Benders' Dictionary of Nutrition and Food Technology.
3. USDA National Nutrient Database for Standard Reference.
4. Rodrigues A, Sandström A, Cá T, Steinsland H, Jensen H, Aaby P. Protection from cholera by adding lime juice to food - results from community and laboratory studies in Guinea-Bissau, West Africa. Trop Med Int Health. 2000 Jun;5(6):418-22. PMID: 10929141.
5. Rodrigues A, Brun H, Sandstrom A. Risk factors for cholera infection in the initial phase of an epidemic in Guinea-Bissau: protection by lime juice. Am J Trop Med Hyg. 1997 Nov;57(5):601-4. PMID: 9392602.
6. Mata L, Vargas C, Saborío D, Vives M. Extinction of Vibrio cholerae in acidic substrata: contaminated cabbage and lettuce treated with lime juice. Rev Biol Trop. 1994 Dec;42(3):487-92. PMID: 7501870.
7. Mata L, Vives M, Vicente G. Extinction of Vibrio cholerae in acidic substrata: contaminated fish marinated with lime juice (ceviche). Rev Biol Trop. 1994 Dec;42(3):479-85. PMID: 7501869.
8. Tawatsin A, Wratten SD, Scott RR, Thavara U, Techadamrongsin Y. Repellency of volatile oils from plants against three mosquito vectors. J Vector Ecol. 2001 Jun;26(1):76-82. PMID: 11469188.
9. Gary D. Manners, Andrew P. Breksa, Thomas S. Schooch, Shin Hasegawa, Robert A. Jacob. Journal of Agricultural and Food Chemistry 2003. Agricultural Research Service (ARS).

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