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02/Mar/2016

There are few fruits more enticing than the jewel-like arils (seed casings) of pomegranate. Adding to the allure of pomegranate are its incredibly versatile culinary applications and its amazingly powerful medicinal properties.

The fruit we know as Pomegranate comes from the deciduous shrub Punica Granatrum. The Pomegranate is native to Iran, The Himalayas and Northern India. An ancient fruit mentioned as early as Iron-Age Greek Mythology; pomegranate is now cultivated in many warm and dry climates around the world. In the northern hemisphere the fruit is typically in season from September to February. There are many culinary uses for pomegranate. The sweet and sour juice has long been a popular drink in Persian and Indian cuisine and has recently become familiar to consumers in Canada and the United States. The cocktail mixer, Grenadine, is a syrup made from sweetened and thickened pomegranate juice. Pomegranate can also be used to create delicious sauces. For instance, in the traditional Iranian recipe, Fesenjan, a thick sauce is made from pomegranate juice and ground walnuts. Pomegranate arils are also great to eat on their own. After opening up the pomegranate, try separating the arils from the pulp in a bowl of water. The pulp will float while the arils sink to the bottom of the bowl.

Pomegranate is an important traditional remedy in many ancient systems of medicine. In Ayurvedic medicine the rind of the fruit is used against diarrhea, dysentery and intestinal parasites. It is now known that the rind contains ellagitannins that are anti-parasitic, anti-inflammatory and astringent (helping to stop diarrhea). The medicinal applications of pomegranate that ancient medical systems have known about for centuries through empirical evidence is now being validated through scientific investigation.

Recently a multitude of studies has surfaced outlining pomegranates therapeutic application in areas such as: cancer therapy, cosmetics, rheumatology and cardiology. The following is a summary of some of the most recent research on pomegranates application in these medical topics.

In 2009 the journal “Nutrition and Cancer” published a review on cancer chemoprevention by pomegranate. In the review the authors outline recent research showing that pomegranate polyphenol extracts selectively inhibit the growth of breast, colon and lung cancer cells in culture. The review also demonstrated that in pre-clinical animal studies, oral consumption of pomegranate extract inhibited the growth of lung, skin, colon and prostate tumors. As far as human trials go, an initial phase 2 clinical trial of pomegranate juice consumption in patients with prostate cancer reported significant prolongation of prostate specific antigen (PSA) doubling time. This means that the pathological growth and disruption of normal functioning prostate tissue was likely decreased. PSA doubling time can be a useful tool in the screening and monitoring of prostate pathology in men, but has to be interpreted in the correct context and by a trained health care professional.

An excellent article was recently published on the topic of PSA in the November 2010 issue of Naturopathic Doctors News and Review (ndnr). Research would suggest that pomegranate has potential application in the field of natural cosmetics. A study in the “International Journal of Dermatology” demonstrated that a polyphenol extract of the rind fruit and seed of pomegranate protected skin cells against UV-B radiation induced skin damage and increased the synthesis of collagen. Collagen is a connective tissue closely related to cartilage; the shock absorbing cushion found in joints. Interestingly, a recent study in the journal of “Arthritis Research and Therapy”demonstrated that pomegranate extract has the ability to inhibit chemical messengers involved in the breakdown of cartilage, as well as decreasing inflammation often seen in osteoarthritic joints.

Since ancient times, Pomegranate has been known as a tonic for the cardiovascular system. I often prescribe a glass of pomegranate juice per day as adjunctive treatment for high blood pressure. The rich red color of pomegranate juice suggests that it is high in polyphenol rich antioxidants. There is great concern in patients at risk for cardiovascular disease for the development of atheroscelrotic plaques. In summary, atheroscleortic plaques develop when lipoprotein (fat transporting protein) becomes oxidized by free radicals and are subsequently attacked by the immune system. The combination of oxidized lipoproteins and immune cells create pimple-like outgrowths in the artery wall, blocking blood flow. LDL-cholesterol (often referred to as bad cholesterol) is not bad in of itself, it is the action of free radical damage on LDL-cholesterol that makes for trouble. Antioxidant-like molecules produced by the body such as PON1 and PON2 protect against atherosclerotic development. A study in the England journal “Biofactors” demonstrated that the polyphenols in pomegranate juice increase the production of PON1 and PON2 therefore helping to decrease the risk of forming atherosclerotic plaques. These studies suggest that molecules called polyphenols found in pomegranate juice, rind and seed have multiple benefits on health. It is our luck that pomegranate arils and juice are delicious and can be easily incorporated into the diet. Unfortunately it is impossible to know exactly how rich the polyphenol content is in the pomegranate or pomegranate juice you buy. However, a good rule of thumb to ensure that you get a good dose of polyphenols is to pick fresh, brightly colored, organic if possible; pomegranates. When buying juice, make sure that it is 100% pure pomegranate juice. A great website on how to pick and prepare pomegranate is www.pomegranatefruit.org


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28/Sep/2015

Pumpkin is a gourd-like squash of the Cucurbitaceae family. The origin of the pumpkin is not definitively known although it is thought to have originated in North America. Pumpkin is a very versatile food; almost every part of the vegetable is edible (shell, seeds, pulp, leaves, flowers). Although the taste and uses of pumpkin as a food may be common knowledge, especially around this time of year, the medicinal properties of pumpkin can often be overlooked.

The color of pumpkin can be attributed to the pigmented carotenoids beta and alpha carotene, the latter of which generates vitamin A in our body. Pumpkin also contains lutein making it an excellent menu choice to maintain eye health. Pumpkin seeds are often roasted and make an excellent snack in the fall and wintertime. Pumpkin seeds have many health benefits, which include a good source of zinc, tryptophan, magnesium, manganese, phosphorous and phytosterols. These nutrients help to promote immune system, cardiovascular, and reproductive health.

Diabetes

There have been several studies over the past decade investigating the effect of extracts of pumpkin on diabetes. One of the most recent studies found that mice who were fed a pumpkin paste concentrate maintained a lower blood sugar level than the control group. The authors were able to isolate two compounds from the pumpkin paste (trigonelline and nicotinic acid) which seem to have an ability to regulate enzymes involved in triglyceride accumulation and the progression of diabetes.

Another study, looked at a major complication of diabetes; kidney damage, and whether pumpkin can be used to prevent its progression. This 2010 study in the journal of Food Chemical Toxicology used a mixture of flax and pumpkin seed in the diets of rats with alloxan-induced diabetes. The flax and pumpkin seed mixture was able to quench free radicals and increase the level of antioxidants in the blood of the diabetic rats. Furthermore, on kidney biopsy, rats fed the seed mixture had less glomerular hypertrophy and tubular dilatation, meaning healthier kidneys.

Prostate

The application for pumpkin seed oil in prostate health has been a popular topic of scientific investigation. A recent double blind placebo controlled trial investigated the efficacy of supplementation of pumpkin seed oil and saw palmetto oil in middle-aged Korean men with benign prostatic hypertrophy (BPH). The trial was performed over 1 year on 47 patients with BPH. The patients received either potato starch (320 mg/day), or pumpkin seed oil (320 mg/day), or saw palmetto oil (320 mg/day) or a mixture of both pumpkin seed and saw palmetto oil (320 mg/day). The groups taking pumpkin seed and saw palmetto oils all saw a decrease in symptoms and an increase in quality of life after 3 months. Serum prostate specific antigen (a laboratory marker of prostate pathology) was reduced in the group taking a mixture of pumpkin and saw palmetto oil after 3 months. Urinary output (which is obstructed in many cases of BPH) improved in both the group taking pumpkin seed oil and the group taking saw palmetto oil at 6 and 12 months respectively. The study concluded by saying that pumpkin seed oil and saw palmetto oil supplementation is clinically safe and may be used as an effective complementary therapy for BPH.

When ripe, pumpkin can be boiled, baked, steamed or roasted. It can be eaten mashed or as a base for soups, purees and pies. I hope that you now see a whole world of possibilities for this incredible orange vegetable. Pumpkins are lonely after Halloween, so take one home and experiment in the kitchen.

Links

Pumpkin may be a good addition to the plate for Diabetes. Be sure to include exercise into any successful type 2 diabetes treatment protocol.

Check out this article on Exercise and Diabetes 


dr_shawn

Patient focused integrative health care. Utilizing effective natural approaches designed to be used alone or to compliment conventional medical care.


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