The traditional Mediterranean diet (MedDiet) is a well-known dietary pattern associated with longevity and improvement of life quality as it reduces the risk of the most common chronic pathologies, such as cancer and cardiovascular diseases (CVDs), that represent the principal cause of death worldwide. One of the most characteristic foods of MedDiet is olive oil, a very complex matrix, which constitutes the main source of fats and is used in the preparation of foods, both raw as an ingredient in recipes, and in cooking. Similarly, strawberries and raspberries are tasty and powerful foods which are commonly consumed in the Mediterranean area in fresh and processed forms and have attracted the scientific and consumer attention worldwide for their beneficial properties for human health. Besides olive oil and berries, honey has lately been introduced in the MedDiet thanks to its relevant nutritional, phytochemical and antioxidant profile. It is a sweet substance that has recently been classified as a functional food. The aim of this review is to present and discuss the recent evidence, obtained from in vitro, in vivo and epidemiological studies, on the potential roles exerted by these foods in the prevention and progression of different types of cancer and CVDs.

Relevance of functional foods in the Mediterranean diet: the role of olive oil, berries and honey in the prevention of cancer and cardiovascular diseases

Honey is characterized as a natural and raw foodstuff that can be consumed not only as a sweetener but also as medicine due to its therapeutic impact on human health. It is prone to adulterants caused by humans that manipulate the quality of honey. Although honey consumption has remarkably increased in the last few years all around the world, the safety of honey is not assessed and monitored regularly. Since the number of consumers of honey adulteration have increased in recent years, their trust and interest in this valuable product has decreased. Honey adulterants are any substances that are added to the pure honey. In this regard, this paper provides a comprehensive and critical review of the different types of adulteration, common sugar adulterants and detection methods, and draws a clear perspective toward the impact of honey adulteration on human health. Adulteration increases the consumer’s blood sugar, which can cause diabetes, abdominal weight gain, and obesity, raise the level of blood lipids and can cause high blood pressure. The most common organ affected by honey adulterants is the liver followed by the kidney, heart, and brain, as shown in several in vivo research designs.

https://www.mdpi.com/2304-8158/9/11/1538/pdf

The Toxic Impact of Honey Adulteration: A Review.

Honey, a natural sweetener has been used universally as a complete food and in complementary medicine since early antiquity. Honey contains over 180 substances, including sugars mainly fructose and glucose, water and a plethora of minor constituents such as vitamins, minerals and phytochemicals. The chemical composition of honey varies depending on floral origin, environment and geographical conditions. The sugar components dominate honey composition and they are accountable for sensory and physicochemical properties in food industry. Although present in small quantities, non-sugar components are the major contributors to the health benefits of honey. Our review summarizes and discusses composition of honey, its protective effects and possible action modes on risk factors of atherosclerosis.

https://www.mdpi.com/2072-6643/11/1/167/pdf/1

Honey and Its Role in Relieving Multiple Facets of Atherosclerosis.

The growing prevalence of obesity has become an important problem worldwide as obesity has several health risks. Notably, factors such as excessive food consumption, a sedentary way of life, high sugar consumption, a fat-rich diet, and a certain genetic profile may lead to obesity. The present review brings together recent advances regarding the significance of interventions involving intestinal gut bacteria and host metabolic phenotypes. We assess important biological molecular mechanisms underlying the impact of gut microbiota on hosts including bile salt metabolism, short-chain fatty acids, and metabolic endotoxemia. Some previous studies have shown a link between microbiota and obesity, and associated disease reports have been documented. Thus, this review focuses on obesity and gut microbiota interactions and further develops the mechanism of the gut microbiome approach related to human obesity. Specifically, we highlight several alternative diet treatments including dietary changes and supplementation with probiotics. The future direction or comparative significance of fecal transplantation, synbiotics, and metabolomics as an approach to the modulation of intestinal microbes is also discussed.

https://www.mdpi.com/2076-2607/7/10/456/pdf

Gut Microbiome Modulation Based on Probiotic Application for Anti-Obesity: A Review on Efficacy and Validation.

Many studies revealed the potential of honey consumption in controlling obesity. However, no study has been conducted using Malaysian honey. In this study, we investigated the efficacy of two local Malaysian honey types: Gelam and Acacia honey in reducing excess weight gain and other parameters related to obesity. The quality of both honey types was determined through physicochemical analysis and contents of phenolic and flavonoid. Male Sprague-Dawley rats were induced to become obese using high fat diet (HFD) prior to introduction with/without honey or orlistat for four weeks. Significant reductions in excess weight gain and adiposity index were observed in rats fed with Gelam honey compared to HFD rats. Moreover, levels of plasma glucose, triglycerides, and cholesterol, plasma leptin and resistin, liver enzymes, renal function test, and relative organ weight in Gelam and Acacia honey treated groups were reduced significantly when compared to rats fed with HFD only. Similar results were also displayed in rats treated with orlistat, but with hepatotoxicity effects. In conclusion, consumption of honey can be used to control obesity by regulating lipid metabolism and appears to be more effective than orlistat.

/pdf/four-week-consumption-of-malaysian-honey-reduces-excess-1sbefufhn5.pdf

Four-Week Consumption of Malaysian Honey Reduces Excess Weight Gain and Improves Obesity-Related Parameters in High Fat Diet Induced Obese Rats

Since ancient times, honey has been used for medicinal purposes in many cultures; it is one of the oldest and most enduring substances used in wound management. Scientific evidence for its efficacy is widely studied, but systemic safety studies are still lacking. It is essential to study the impact of consumption of honey on the health and proper development of the consumer. Therefore, the present study was designed to observe the effects of acute administration (14 days) of Gelam honey (GH), a wild harvesting honey and Acacia honey (AH), a beekeeping honey, on male and female Sprague Dawley (SD) rats. An acute oral study was performed following OECD test guideline 423, with minor modifications. In the study, GH, AH and sucrose (S) were administered at 2000 mg/kg body weight. Animals were obse rved for the next 14 days. Gross pathology was performed at the end of the study. Animals were observed for mortality, morbidity, body weight changes, feed and water intake. Clinical biochemistry, gross pathology, relative organ weight and histopathological examination were performed. Rats fed with honey did not exhibit any abnormal signs or deaths. Results showed a decrease in weight gain and energy efficiency, but significantly increased in total food intake and total calories in female rats fed with GH, compared to control (p < 0.05). Nevertheless, a significant increase in body weight was observed in male rats in all honey-treated groups. Male rats fed with AH significantly decreased in total food intake, total calories and energy efficiency. Both male and female rats fed with GH displayed a significant decrease in triglycerides compared to control group. Hepatic and renal function levels were within acceptable range. The gross necropsy analysis did not reveal changes in any of the organs examined. Our results suggest that acute consumption of GH and AH at 2000 mg/kg body weight of male and female SD rats has some discrepancy effects on biochemical parameters but in line with OECD regulation. Gelam honey may have potential in controlling weight gain and triglyceride levels in female rats compared to Acacia honey. SD rats have some effect on biochemical parameters, an exploration of which would make for intriguing analysis.

/pdf/effects-of-gelam-and-acacia-honey-acute-administration-on-261sst10d9.pdf

Effects of Gelam and Acacia honey acute administration on some biochemical parameters of Sprague Dawley rats

The antidiabetic properties of Tinospora crispa, a local herb that has been used in traditional Malay medicine and rich in antioxidant, were explored based on obesity-linked insulin resistance condition. Male Wistar rats were randomly divided into four groups, namely, the normal control (NC) which received standard rodent diet, the high fat diet (HFD) which received high fat diet only, the high fat diet treated with T. crispa (HFDTC), and the high fat diet treated with orlistat (HFDO). After sixteen weeks of treatment, blood and organs were harvested for analyses. Results showed that T. crispa significantly (p < 0.05) reduced the body weight (41.14 ± 1.40%), adiposity index serum levels (4.910 ± 0.80%), aspartate aminotransferase (AST: 161 ± 4.71 U/L), alanine aminotransferase (ALT: 100.95 ± 3.10 U/L), total cholesterol (TC: 18.55 ± 0.26 mmol/L), triglycerides (TG: 3.70 ± 0.11 mmol/L), blood glucose (8.50 ± 0.30 mmo/L), resistin (0.74 ± 0.20 ng/mL), and leptin (17.428 ± 1.50 ng/mL) hormones in HFDTC group. The insulin (1.65 ± 0.07 pg/mL) and C-peptide (136.48 pmol/L) hormones were slightly decreased but within normal range. The histological results showed unharmed and intact liver tissues in HFDTC group. As a conclusion, T. crispa ameliorates insulin resistance-associated with obesity in Wistar rats fed with high fat diet.

/pdf/tinospora-crispa-ameliorates-insulin-resistance-induced-by-7ssr3uneu8.pdf

Tinospora crispa Ameliorates Insulin Resistance Induced by High Fat Diet in Wistar Rats

The effects of adulterated honey consumption towards human health is not widely known; mainly due to lack of systematic
and scientific studies and low public awareness. In this study, short-term and long-term effects of consumption on two
brands of commercially honey are available in Malaysian market was investigated and compared to normal control (NC)
rats and rats fed with natural pineapple honey (PH) using male Sprague dawley rats. Adulteration of honey used in the
study was measured using physicochemical and antioxidant analyses and identified as adulterated honey A (FHA) and
B (FHB). No toxicity effect was found for short-term consumption (14 days with one honey consumption). However, visible
effects were observed after 16 weeks of study. Both FHA and FHB showed a significant increase (p>0.05) in cholesterol
(48.6 ± 4.8 mmol/L, 46.5 ± 3.6 mmol/L), triglycerides (26 ± 1.2 mmol/L, 24.4 ± 1.8 mmol/L) and glucose (28.4 ± 2.5
mmol/L, 25 ± 2.6 mmol/L) level respectively. In contrast, rats from NC and PH groups have lower cholesterol (26.5 ± 4.4
mmol/L, 18.94 ± 3.6 mmol/L), triglycerides (17.5 ± 1.2 mmol/L, 13.5 ± 1.5 mmol/L) and glucose (6.4 ± 1.4 mmol/L, 8.0 ±
1.5 mmol/L) level, respectively. The most critical finding was in total five rats from both fake honey groups showed early
mortality. This intensive study indicates long-term adulterated honey may harm to human health and required prompt
actions from various authorities locally and internationally to avoid other consequences in the future.

Adulterated honey consumption can induce obesity, increase blood glucose level and demonstrate toxicity effects

Honey has potential in controlling obesity by reducing excess weight gain and other obesity parameters such as triglyceride
levels. However, its effects on the cells that stores lipid (adipocytes) is still unclear. This study was performed to observe the
effects of pineapple honey on the growth and lipid accumulation of adipocytes in vitro. Pineapple honey was standardised
according to its total phenolic and flavonoid contents prior to treating on differentiated 3T3-L1 adipocytes. Proliferation of
adipocytes was observed using 3-(4,5 dimethylthiazol-2-yl)-2,5-dipenyltetrazolium bromide (MTT) assay while lipid
accumulation and droplet size were determined using oil red O staining and Feret’s diameter. Pineapple honey exhibited
0.0379 ± 0.001 mg/100 mL GAE of total phenolic content and 0.098 ± 0.001 mg catechin/kg of total flavonoid content. It
significantly inhibited adipocytes’ proliferation starting from 6.25% of pineapple honey concentration. In addition, the honey
also significantly reduced lipid droplet size by 33.78% to 70.36% and reduced lipid accumulation compared to the control.
These findings suggest that pineapple honey may affect the storage of lipids in adipocytes. Future investigation involving the
biomarkers of adipogenesis is required to confirm whether the reduction in lipid accumulation is attributed to the effect of
honey on these pathways.

Suhana Samat

Papers

Four-Week Consumption of Malaysian Honey Reduces Excess Weight Gain and Improves Obesity-Related Parameters in High Fat Diet Induced Obese Rats

Effects of Gelam and Acacia honey acute administration on some biochemical parameters of Sprague Dawley rats

Tinospora crispa Ameliorates Insulin Resistance Induced by High Fat Diet in Wistar Rats

Adulterated honey consumption can induce obesity, increase blood glucose level and demonstrate toxicity effects

Pineapple honey inhibits adipocytes proliferation and reduces lipid droplet accumulation in 3T3-L1 adipocytes