Category: Featured, Highlights, Nature & Science Topics: Diet, Health, Natural Foods, Nutrition, Prophet Muhammad (S) Views: 15087
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Sunnah Superfoods: A Path to Well-Being
Pomegranate seeds shaping heart in hands (photo: iStock by Getty Images).
Health Benefits: Prophet Muhammad ﷺ Recommended Superfoods
Abstract
Nutrition and other bioactive natural products present in specific foods within a balanced diet play an indispensable role in maintaining and promoting human health. Plants are rich sources of balanced nutrition because of a high content of bioactive products; hence, most of them have recently acquired the status of superfoods. It has been used since ancient times for the treatment of various ailments, and these traditional medicines still remain one of the most affordable and easily accessible sources of treatment in the primary healthcare system. The scientifically based use of these superfoods dates back to the era of Prophet Muhammad ﷺ along with other historical uses of plant products. Prescription of a large number of herbal foods such as dates, pomegranates, olives, figs, grapes, and black seeds was successfully proposed by him. These recently have become superfoods with their powerful healing properties and act as favorable dietary interventions for disease prevention as well as for the good maintenance of health. The use of these foods as ingredients of natural origin with fewer side effects seems to be more favorable than the chemical treatment, which is often complicated. The present review is an attempt to provide a brief survey of the literature on the scientifically based significance of these superfoods carried out by various researchers and exploration of a wide spectrum of their pharmacological actions, which include antidiabetic, anticancer, immune modulator, analgesic, anti-inflammatory, and hepatoprotective properties.
Introduction
There is a myriad of diverse flora available on our earth, having powerful medicinal values to prevent or cure several human diseases. Many of them are considered superfoods due to their high and varied contents of a large number of natural bioactive products, which have immense health benefits. Superfoods include a class of most potent, super concentrated, and nutrient-rich foods having an abundance of synergetic elements in their natural state, which work together in the human body. Besides having good taste, superfoods have the ability to enormously increase the vital force and energy of one’s body and are the best choice for improving overall health.[1,2]
In addition to providing nourishment to the body, food has played a vital role in the management of various diseases since the dawn of civilization, and hence, they are our natural safe bet of late. There has been a long history of the use of plant-based foods against human ailments. They have been used since the time of Prophet Muhammad (Peace Be Upon Him). He had prescribed the use of foods rich in nutrients that can counter the effects of substances that have been proven to be harmful. He had recommended certain foods such as dates, olives, figs, pomegranates, black seeds, grapes, and many others for alleviating several ailments. Prophetic recommendations of food are remarkable for their prescience, as they came centuries before research was conducted on healthy diet and their benefits to the body.[3,4]
There are tremendous advances made in allopathic medical practices, which sometimes have been proven to have drastic effects on humans.[5] In recent years, treatment strategies have focused on the development of novel curative options with no side effects. Sunnah (prophetic tradition) advocates the pre-date use of food as medicines by many centuries, serving as precursors to the principles of modern treatment. According to one of the Prophet Muhammad ﷺ statements, “The one who sent down the disease sent down the remedy, and for each disease, Almighty has given a cure.” People are encouraged to seek out those remedies and use them with skill and kindness.[6]
Prophet Muhammad's ﷺ recommended foods have now become superfoods of the day for their powerful healing properties, which are now becoming known to us. These are being practiced even today; however, still, our knowledge regarding the active ingredients of these plants and their products, which have powerful phytochemical and pharmaceutical actions, is poorly understood. There are no proper scientific validations and despite a treasure of phytomedicines, ailments such as cancer, obesity-related hypertension, diabetes, and many incurable diseases are on the rise. There is an urgent need to review the historically prescribed superfood-derived drugs for their state-of-the-art development and use. Hence, the present review highlights the therapeutic potentials of Prophet Muhammad ﷺ recommended plant-based superfoods and their constituents against many incurable human ailments.
Most Common Life-threatening Diseases and Their Treatment Approaches
Cancer is a major cause of death worldwide. Development of cancer gets started from the uncontrolled growth of cells to the development of primary tumors, vascularization, and its consequent spread to other body parts, where secondary tumors may form. The common types of cancers leading to overall mortality are lung, liver, stomach, breast, and colon. There are a number of treatment techniques that are in use or under development today to cure these types of cancers, which are commonly grouped into five categories: Radiation, surgery, chemotherapy, hormonal therapy, and immunotherapy.[7,8]
Apart from various treatment approaches, chemotherapy is one of the chief therapeutic approaches to combat cancer. The main objective of the ideal cancer chemotherapy is to deliver the exact amount of drug with a desired controlled rate and for a satisfactorily long duration of time to the site of action, preventing the normal cells from obtaining a therapeutic response.[9] However, there are certain problems associated with such treatments, such as rigorous side effects, repeated treatments, high patient risks, and the attainment of multidrug resistance by the cancer cells.[10-12]
The other threatening disease is diabetes. The prevalence of diabetes, more commonly of type 2, has gradually been rising as a consequence of today’s desk-bound lifestyles and increased obesity. It is calculated that about 171 million people worldwide had diabetes in 2000, which will gradually increase to reach 366 million by 2030, resulting in high morbidity and a vast economic burden.[13] The pathophysiology of type 2 diabetes is extremely accelerating, and its causes are characterized by decreased insulin sensitivity and a decline in cell function. Deteriorating insulin function results in chronic hyperglycemia and severe glycemic fluctuations.[14]
Type 2 diabetes is usually managed with acute medical therapy and a stepwise approach, including lifestyle modifications, the addition of oral antidiabetic drugs (OADs), and the addition of insulin. Treatment is succeeding only in limited cases because OADs may also have undesirable side effects. The effects of OADs are often initiated too late, which results in exposing the patient to destructive levels of hyperglycemia.[15] Insulin therapy is frequently accompanied by weight gain.[16] The conventional vial and syringe methods of insulin administration are linked in some cases with needle aversion, shortage of convenience, complexity with exact dosing, and, ultimately, reduced adherence to the insulin regimen.[16-19]
Obesity imparts an accelerating risk of type 2 diabetes and cardiovascular diseases. Obesity is a multifaceted disease that develops from the interaction between genotype and the environment. It involves the integration of several factors, including social, cultural, behavioral, physiological, metabolic, and genetic factors.[20] Some of the various approaches for the treatment of obesity are pharmacotherapy, behavior therapy, and weight loss surgery.[21,22] In pharmacotherapy, the FDA recommended that weight loss drugs are prescribed, and their long-term use may cause numerous side effects. Weight loss surgery provides significant weight loss, but lifelong medical monitoring is required. Some patients also develop incisional hernias, gallstones, dumping syndrome, and subsequent weight loss failure.[23,24]
Traditional medicines have been used for those diseases. The reason is that they are cheaper, correspond to the patient’s ideology, relieve from the adverse effects of synthetic medicines, satisfy a need for more personalized health care, and let greater public way into being healthy knowledge. The chief use of herbal medicines is for health promotion and treatment for chronic diseases. However, the uses of traditional medicines are in demand only when conventional medicine becomes no more effective against a particular disease, such as in advanced cancer or in a condition of new infectious disease. Moreover, traditional medicines are widely seen as natural and safe without any toxicological implications.[25-27] Recently, some traditional foods called “superfoods” are remarked because they contain various bioactive compounds. Many studies suggested that some traditional foods including dates, pomegranate, black seeds, fig, and olives play an important role to inhibit or to cure diseases. Pictorial representation of these superfoods are shown in Figure 1. The scheme of the links between superfoods and their health potentials is shown in Table 1, and their precise characteristics are discussed in the next section.
Figure 1
Superfoods beneficial to health
Table 1
Showing the links between superfoods and their health potentials
Superfoods and their Health Benefits
Dates (Phoenix dactylifera)
Dates are the staple food of the Middle East and very popular in Islamic countries. Dates were the most favored food of Prophet Muhammad ﷺ, who said, “If anyone is fasting, let him break his fast with dates. In case he does not have them, then with water.”[28,29] Its health benefits and nutritional value are well known across the world due to the presence of rich high profile nutrients and their health-promoting properties. Date palm (P. dactylifera L.) is a multipurpose tree providing fiber, carbohydrates, minerals, and vitamins besides having extreme medicinal properties.[28,30,31] Some of their medicinal properties are summarized.
Cancer
Polyphenol containing dates were found to have anticancer effects as reported by the study of Eid et al. (2014).[32] They have extracted polyphenols from Ajwa dates and demonstrated inhibitory effect on Caco-2 colon cancer cell line in vitro. Findings of Khan et al.[33] also showed the anticancer effect of antagonizing dates on human breast adenocarcinoma (MCF7) cells in vitro. Hence, we can say that MEAD may be used as an adjuvant therapy with conventional chemotherapeutic to achieve a synergistic effect against breast cancer. Some other component like carbohydrate (1→3)-β-D glucan isolated from Lebanon dates also found to have the same effect on sarcoma-180 in mice.[34]
Hepatopathy
Whenever a liver is damaged, the patient suffers from hepatic disturbance followed by liver failure. A major cause of liver failure is poisoning from certain chemical substances administered or produced in the body through drugs or medicines. Several studies prove the protective effect of dates on hepatorenal toxicity. Proanthocyanidin-rich dates can be used in treatment or prevention of toxic actions of different substances such as carbon tetrachloride (CCl4), thioacetamide (TAA), and dimethoate poisoning in liver.[35,36]
Diabetes
It is found that consuming low glycemic index (GI) diets are useful in the management of diabetes. Dates can be classified as low GI superfood, due to the presence of high fructose, as fructose is sweeter and less diabetogenic than glucose.[37,38] Hasan and Moheildin[39] evaluated the antidiabetic activity of two kinds of seed extracts (Ajwa and Sukkari of Kingdom of Saudi Arabia) on streptozotocin-induced diabetic rats. Long-term administration of the extract restores the function of liver and kidney and balances the oxidative stress condition in diabetic-treated rats.
Healthy pregnancy and delivery
For pregnant and postnatal women, the use of dates is particularly relevant. The consumption of dates by women before and after delivery can act as a tonic to strengthen the uterine muscles.[40] Al-Kuran et al.[41] concluded that the consumption of date fruit in the past 4 weeks before labor significantly reduced the need of labor induction and augmentation and produced a more favorable, delivery outcome. Thus, dates are the compact superfood, with a high fiber, iron, trace elements, antioxidant, rich energy content, along with low GI, a perfect choice for today’s health-conscious generation.
Pomegranate (Punica granatum)
Pomegranate (P. granatum) which is used as a fruit-bearing delicious shrub is the predominant member of two species comprising the Punicaceae family.[42] Pomegranate is widely consumed as juice, jam, and extracts.[44] Pomegranate has long been used to treat a variety of ailments.[45]
Cancer
Accumulating evidence suggests that pomegranate can stimulate many genes and proteins to suppress cancer growth and its progression. It is generally attributed to its high content of polyphenols. In addition, polyphenols of pomegranate such as punicalagin and ellagic acid have remarked antagonizing effects by inhibiting the effect of mutagens (i.e., sodium azide, benzo[a]pyrene, methyl methanesulfonate, and 2-aminoflourine), with maximum inhibition of mutagenicity up to 90%.[44] Pomegranate extract has also been reported to have chemopreventive role on breast,[45] colon,[46] hepatic,[47] skin,[48] and blood[49] cancers.
Memory disturbance
Polyphenols abundantly contained in pomegranate juice have potential neuroprotective effects. They help in augmenting our memory functions through the increase of important components for brain activation, as reported by West et al.[50] Other studies on mice suggested that it can also protect against Alzheimer’s disease.[51]
Diabetes
Consumption of concentrated pomegranate juice along with normal diet lowers down total (or low-density lipoprotein [LDL]) cholesterol level in type II diabetic patients with hyperlipidemia.[52-54] Accumulation of glycation end-product which leads to diabetic complications is suppressed by pomegranate fruit extract and its polyphenols such as punicalin, punicalagin, ellagic acid, and gallic acid.
Heart diseases and hypertension
Pomegranate is characterized by considerably high amounts of biologically active phytochemicals including flavonoids (e.g. anthocyanins, catechins, quercetin, and rutin), other types of polyphenols, ellagitannins, and antioxidant vitamins.[55] Juice consumption of pomegranate reduces systolic blood pressure and inhibits serum angiotensin-converting enzyme activity.[56] These hypotensive properties of pomegranate juice could be ascribed to the promising antioxidant properties of phytochemicals present in it, making it a powerful superfruit of recent times. Polyphenols present in pomegranate have an ability to inhibit LDL oxidation, macrophage foam cell formation, and atherosclerosis.[57]
Grapes (Vitis vinifera)
A grape, which is used as a fruiting berry of deciduous woody vines, is of botanical genus Vitis. Most grapes come from cultivars of V. vinifera, the European grapevine native to the Mediterranean and Central Asia. The Prophet Muhammad ﷺ was very fond of grapes. Grape-derived phytochemicals are used to cure various diseases.
Heart diseases
There is a wide variety of polyphenol compounds contained in grapes including flavonoids, phenolic acids, and resveratrol. The highest concentrations of grape polyphenols are found in the skin, stems, and seeds.[58] The evidence of various epidemiological researches suggests that the dietary intake of these compounds reduces cardiovascular mortality.[59-61] Many studies in vitro as well as in animals and humans demonstrate the beneficial effects of grape polyphenols on traditional cardiovascular risk factors.[62,63]
Cancer
During the past decade, numerous preclinical studies have been conducted using in vivo animal models and in vitro approaches, which show the protective effects of grape seed extract and its active constituents (proanthocyanidins) against skin,[64] breast,[65] prostate,[66] head and neck,[67,68] and lung[69] cancers. Recently, Mao et al.[70] have hypothesized that grape seed procyanidin extract exerts antineoplastic effects through modulations of oncomirs (micro RNA associated with carcinogenesis and malignant transformation) and their downstream targets.
Hyperglycemia and hypertension
An aqueous extract of grape leaves and seeds containing proanthocyanidins showed an antihyperglycemic and antioxidant effect.[71] There is a possibility that consumption of grapes or grape preparations may be beneficial to individuals with aberrant insulin responses to glucose.[72]
Grapes are rich in flavonoids, and the work of Dohadwala and Vita[73] has suggested that consumption of grapes and grapes containing products might lower blood pressure. Grape flavonoids have favorable effects on endothelial function and inflammation that might reduce arterial stiffness and lower blood pressure.[73] There has been a nocturnal dip in blood pressure which was observed by the consumption of grape juice.[74]
Black seeds (Nigella sativa)
Black seed (N. sativa) also known as kalonji, often called black cumin, is an annual flowering plant in the family Ranunculaceae, native to South and Southwest Asia. It is a widely used medicinal plant throughout the world. It is very popular in various traditional medicines such as Unani and Tibb, Ayurveda, and Siddha.[75,76] It is the black seeds referred to by Prophet Muhammad ﷺ, who once stated, “The black seed can heal every disease, except death”.
Diabetes
Thymoquinone is present in N. sativa, and it has proved that thymoquinone has the ability to improve hepatic enzyme activities and thereby exerts its potential antihyperglycemic effects.[77] A studies of Kanter et al.[78] have also demonstrated the protective effects of volatile oil of N. sativa seeds on insulin immunoreactivity and ultrastructural changes of pancreatic β-cells in streptozocin-induced diabetic rats. Effect of N. sativa on patients with type 2 diabetes was investigated by Bamosa et al.[79] The results of their experiments indicate that a dose of 2 g/day of N. sativa might be highly beneficial adjuvant to oral hypoglycemic agents in patients with type 2 diabetes. The combination of lipoic acid, carnitine, and N. sativa can contribute in the improvement of carbohydrate metabolism in diabetic rats.[80]
Cancer
It was revealed that crude oil of N. sativa has chemopreventive potential to cancer cells. Administration of 1000 or 4000 mg/L N. sativa volatile oil in the diet of male Wister rats for 30 weeks significantly reduced malignant and benign colon tumor sizes, incidences, and multiplicities.[81] Different extracts of N. sativa showed the cytotoxic effect on human MCF-7 breast cancer cells. Studies of Mahmoud and Torchilin[82] demonstrated that lipid extract N. sativa is cytotoxic to MCF-7 cells with LC50 of 2.720 ± 0.232 mg/ml, while its aqueous extract showed cytotoxicity when the applied concentration is high as about 50 mg/ml.
Hyperpigmentary disorders
Members of our group have reported very interesting finding[83] on hyperpigmentary activity of N. sativa. They showed that the extract of N. sativa, as well as its active principle, thymoquinone leads to skin darkening through stimulation of cholinergic receptors of muscarinic nature within the black skin cells, the melanophores of wall lizard, Hemydactylus flaviridis. The data of this interesting study have opened new vistas for the use of N. sativa and its active ingredient, thymoquinone, as a novel melanogen for its clinical application in skin disorders such as hypopigmentation or vitiligo. It must be mentioned that now, black seeds are assuming the status of a superfood, cheap and loaded with powerful medicinal properties.
Fig (Ficus carica)
F. carica belongs to Moraceae family and is commonly known as “Fig” (Anjir in Hindi), and the place of origin is the Middle East and Western Asia. Different plant parts such as fruits, seeds, leaves, tender, bark, shoots, and latex have numerous medicinal applications.[84]
Cancer
A mixture of 6-O-acyl-β-sitosterols was isolated as an effective cytotoxic agent from F. caricalatex. The mixture showed in vitro inhibitory effects on proliferation of various cancer cell lines.[85,86] Tirucallane-type triterpenoid compounds, ficutirucins, were isolated from F. carica, and their cytotoxic activity against human cancer cell lines, MCF-7, HepG-2, and U2OS was studied. Their results showed that all of them exhibited moderate cytotoxic activities against one or more of the three cancer cell lines.[87] Glioblastoma multiforme (GBM) is one of the worst human malignancies. Tezcan et al.[88] have investigated that F. carica latex prevents invasion through induction of let-7d expression in GBM cell lines.
Diabetes
The leaf extract of F. carica induced a significant hypoglycamic effect in oral or intraperitoneal administration in streptozotocin-diabetic rats. Weight loss was promoted in diabetic-treated rats, and plasma insulin levels considerably altered the survival index. The results indicated that the aqueous extract of F. carica has an obvious hypoglycemic activity.[89] It is also found that F. carica extract probably normalized the oxidative stress in streptozotocin-induced diabetic rats.[90] The effects of ficusin isolated from F. carica on GLUT4 translocation, and PPARγ expression in type 2 diabetic rats was examined and ficusin showed antidiabetic effects.[91]
Hypolipidemic and Hyperpigmentary
Hypotriglyceridemic activity of F. carica leaves in experimental hyper triglyceridemic rats was successfully studied by Perez et al.[92] Ficusin isolated from F. caricasignificantly lowered the serum antioxidant enzyme and lipids (total cholesterol [TC], triglycerides [TG], and free fatty acid) levels to near normal.[93] The leaf extract of F. carica could be a beneficial supplement to modulate TG and TC secretion in poultry liver. 8-week-old rooster’s liver with high abdominal fat was extracted; the sliced cells were cultured with a high concentration of F. carica leaf extract, insulin, or both of them. Addition of insulin stimulates the TG and TC secretion, and the level was higher than that of control. However, there was a significant reduction in TG and TC secretion when coincubated with leaf extract.[93]
Metei and Ali[94] in our group have demonstrated skin darkening effect of F. carica leaf extract and its bioactive compound psoralen in reptilian melanophores through cholinergic receptor stimulation. Hence, F. carica may be a good alternative for the treatment of hypopigmentary disorders.
Olives (Olea europaea)
Olive, O. europaea meaning “European olive,” is a species of small tree in the family Oleaceae. Extensive use of olive oil and olive leaves is cited in the Holy Bible as a natural healer. Prophet Muhammad ﷺ said “Eat olive oil and massage it over your bodies since it is a holy (Mubarak) tree”. He also stated that olive oil cures 70 diseases.
Cancer
Oleic acid present in olives has been found to be particularly effective against breast, colon, and prostate cancer cells. Eating olives could prevent the cell growth more than 25%, 15%, and 10% of colon, breast, and prostate cancers, respectively.[95] Oncology researchers proposed that oleic acid may fight cancer through its interference in human genome. They have found that oleic acid suppresses over expression of oncogenes and ultimately suppress the metastatis of many cancers.[96,97]
Rheumatoid arthritis
Increased olive oil consumption has been linked with a decreased risk of developing rheumatoid arthritis, an autoimmune disease characterized by inflammation and pain, particularly in the joints.[98] A clinical trial with olive oil was performed. Consequently, rheumatoid arthritis patients who supplemented their diets with olive oil and fish oil experienced more great improvement than the patients who supplemented with fish oil alone in clinical measurements of the disease.[99] These observations suggest that olive oil could help prevent rheumatoid arthritis and may restore mobility and function in those already affected by the disease.
Anti-inflammatory and analgesic
Oleocanthal found in olive oil is an in vitro cyclooxygenase inhibitor having anti-inflammatory and analgesic properties similar to the nonsteroidal anti-inflammatory drug ibuprofen. Oleocanthal may offer special protection against Alzheimer’s disease. A laboratory study found that oleocanthal alters the structure of neurotoxic proteins believed to contribute to the devastating effects of Alzheimer’s disease.[100] Studies of Donato-Trancoso, (2016)[101] showed that due to anti-inflammatory and antioxidant properties of olive oil, it is able to improve cutaneous wound healing of pressure ulcers in mice.
Diabetes
Several studies have shown that oleuropein present in olive leaves (up to 6%–9% of dry matter in the leaves) possesses a wide range of pharmacologic and health-promoting properties.[102] Especially, oleuropein has the ability to improve glucose metabolism and has been reported to have an antihyperglycemic effect in diabetic rats.[103]
Conclusion
From centuries, there has been a use of natural products including dietary components, herbs, and spices for the prevention of several diseases. Today, there is renewed interest in natural phytochemicals, as optimistic options for the development of more effective chemopreventive and chemotherapeutic strategies for a variety of incurable diseases. The present communication has focused on the efficacy of certain plant products against various diseases as recommended many years before, in an attempt to safeguard the deteriorating knowledge that can be used as a stepping stone for phytochemical and pharmacological analysis of these superfoods, without any side effects. Thus, the knowledge of the development of ideas related to the usage of superfoods as powerful medicines, their active ingredients responsible for treating a particular disease, and the actual mechanism by which they work to alleviate the diseases is very important, as it will increase the ability of modern pharmacists and physicians to respond to the severe challenges that are emerging with the spread of dreadful and incurable diseases.
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( Source: Courtesy of Qassim University; Article republished from the International Journal of Health Sciences, 2018 Mar-Apr; 12(2): 61–69; "Links between the Prophet Muhammad ﷺ recommended foods and disease management: A review in the light of modern superfoods", accessible at U.S. National Library of Medicine. This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 )
Category: Featured, Highlights, Nature & Science
Topics: Diet, Health, Natural Foods, Nutrition, Prophet Muhammad (S)
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Topics: Diet, Health, Natural Foods, Nutrition, Prophet Muhammad (S)
Views: 15087
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