Molasses: A Comprehensive Reference
1. Identity, Botanical Sources, and Common Forms
1.1 Definition and Botanical Sources
Molasses is a viscous byproduct principally obtained from the refining of sugarcane or sugar beet juice. The primary botanical source of cane molasses is Saccharum officinarum L. (family Poaceae), a species of sugarcane whose juice is processed to yield a dark, sugar-rich residue. Sugar beet (Beta vulgaris var. saccharifera) is the other principal source. Other plant resources for sucrose include grape, mulberry, apricot, prune, fig, apple, and carob.
Sugarcane (Saccharum officinarum L.) is an important perennial grass in the Poaceae family cultivated worldwide due to its economic and medicinal value. It was first domesticated in New Guinea and the islands east of the Wallace Line by Papuans, where it is the modern centre of diversity. Beginning at around 6,000 BP it was selectively bred from the native S. robustum, and from New Guinea it spread westwards to Island Southeast Asia after contact with Austronesians, where it hybridized with S. spontaneum.
The English word "molasses" derives from the Portuguese melaço, itself taken from the Latin mel, meaning honey. The term originally comes from the Portuguese word "melaço," which is in turn taken from the Latin mel, meaning honey. In the context of sugar manufacturing, molasses is also known by its Spanish equivalent melaza and by various regional names. On Madeira Island, cane molasses is an important constituent of the traditional cuisine, where it is known as mel-de-cana (Portuguese for "sugarcane honey"). Its origin in Madeira dates back to the golden age of sugar production in the archipelago.
1.2 Manufacturing Process and Types
First, manufacturers crush sugar cane or sugar beets to extract the juice. They then boil down the juice to form sugar crystals. Molasses is the thick, brown syrup left over after they remove the crystals from the juice. Manufacturers repeat this process several times, producing different types of molasses each time.
There are different types of molasses depending on the amount of time refined, including first molasses (highest sugar content), second molasses (slightly bitter), and blackstrap molasses (the darkest and most robust in flavor). In more detail:
- Light (first) molasses: Resulting from the first sugar extraction, it has a lighter color and a sweeter taste due to its high sugar content. It is commonly used in baking.
- Dark (second) molasses: Produced after the second boiling; darker and less sweet than first molasses, with a more pronounced flavor.
- Blackstrap molasses: The dark brown, amber or red viscous molasses that remains after maximum extraction of sugar from raw sugar cane. The third boiling of sugar syrup yields blackstrap molasses. This concentrated byproduct is left over after the sugar's sucrose has been crystallized, and it has a robust flavor described as bittersweet. Because it is boiled three times, blackstrap molasses is more nutrient-dense than other types of molasses.
- Sulfured vs. unsulfured: Molasses labelled "sulfured" contains added sulfur dioxide, which acts as a preservative and prevents the molasses from spoiling. Sulfured varieties tend to be less sweet than other varieties. Sulfur is sometimes used in molasses to extend its shelf life and kill bacteria and mold, and to assist in processing sugarcane that has been harvested at an early stage, opposed to fully sun-ripened sugarcane.
Other notable variants include sweet sorghum syrup, colloquially called sorghum molasses in the southern United States, and pomegranate molasses, a traditional ingredient in Middle Eastern cooking. Beet molasses is 50% sugar by dry weight, predominantly sucrose, but contains significant amounts of glucose and fructose. Beet molasses is limited in biotin (vitamin H or B7) for cell growth and may therefore be supplemented with a biotin source. The non-sugar content includes many salts, such as calcium, potassium, magnesium, oxalate, and chloride.
1.3 Common Commercial Forms
Molasses is commercially available as a thick liquid syrup, in various grades (light, dark, blackstrap), and as both sulfured and unsulfured preparations. People often use it as a sweetener, spread, or topping for yogurt or oatmeal. It is also sold encapsulated as a dietary supplement, particularly in the form of concentrated blackstrap molasses powder.
2. Historical and Traditional Use
2.1 Ancient Origins
Molasses has been used since as early as 500 B.C.E. in India, created from cane. Making molasses — the process of pressing sugar cane and boiling its juice until it crystallized — was developed in India as early as 500 B.C.E. In the Middle Ages, the concept made its way to Europe when Arab invaders brought it to Spain. From there, molasses-making took another voyage across the Atlantic when Christopher Columbus brought sugar cane to the West Indies.
Traditional medicines, such as Ayurveda, prescribe herbal formulations containing sugarcane derivatives for the management of pandu, a condition similar to iron deficiency anemia. The use of sugarcane and its by-products in Ayurvedic medicine represents one of the earliest documented therapeutic applications of molasses-related materials.
2.2 Colonial Americas and Early Modern Use
The colonial molasses trade occurred throughout the seventeenth, eighteenth, and nineteenth centuries in the European colonies in the Americas. Molasses was a major trading product in the Americas, being produced by enslaved Africans on sugar plantations in European colonies. It was a major import for the British North American colonies, which used molasses to produce rum, especially in distilleries in New England. The finished product was then exported to Europe as part of the triangular trade.
Molasses was also used in the colonies for kitchen purposes, such as for baked beans, brown bread, Indian pudding, pie, and soft drinks. Molasses were also used for curing meat and pickling fish, and for medicinal purposes. It was popular in the Americas before the 20th century, when it was plentiful and commonly used as a sweetener in foods and an ingredient in brewing beer in the colonies. George Washington had a notebook that contains a molasses beer recipe.
Outside of the rum distillery, the most important use of molasses was its use in brewing beer. Molasses beer was said to be cheaper, easier to make, and less alcoholic than commercial beer — which came in handy for people who lacked access to purified drinking water.
2.3 Traditional Medicinal Uses
Molasses, especially blackstrap molasses, has a long history of traditional use as a home remedy for anemia, particularly iron deficiency anemia. This practice is based on the fact that molasses contains some iron, as well as other minerals like calcium and magnesium. Historically, before the widespread availability of iron supplements and fortified foods, individuals sought out natural sources of iron, and blackstrap molasses, being a byproduct of sugar cane processing, was an accessible and affordable option.
Blackstrap molasses has long been used as a folk cure for constipation and other digestive issues. In herbalism, molasses has also been traditionally used to address rheumatism and menstrual complaints, and it is generally regarded as helpful for the health of the colon and for treating both menstruation and menopause, partly because it is a good source of both calcium and iron.
Molasses was historically popular in the Americas before the 20th century as a sweetener. While commonly used in the past as a standard cooking sweetener, molasses largely has been replaced by refined sugar.
3. Chemical Composition and Key Constituents
3.1 Macronutrient Profile
Molasses is composed of approximately 22% water, 75% carbohydrates, and very small amounts (0.1%) of fat; it contains no protein. The sugars in molasses are on average sucrose (39% of total carbohydrates), glucose (16%), and fructose (17%) (data from USDA nutrition table). Molasses is an essential source of monosaccharides (glucose, fructose, galactose, arabinose, xylose), disaccharides (sucrose), and trisaccharides (raffinose).
One tablespoon of molasses contains about 58 calories. A tablespoon (20g) of blackstrap molasses contains approximately 60 calories and 15g of carbohydrates.
3.2 Micronutrients: Minerals and Vitamins
In a reference amount of 100 grams, molasses is a rich source (20% or more of the Daily Value, DV) of vitamin B6 and several dietary minerals, including manganese, magnesium, iron, potassium, and calcium. Unlike highly refined sugars, molasses contains significant amounts of vitamin B6 and minerals, including calcium, magnesium, iron, and manganese; one tablespoon provides up to 20% of the recommended daily value of each of those nutrients. Blackstrap is also a good source of potassium.
One tablespoon of blackstrap molasses contains 20% of the iron needed each day. A single tablespoon of blackstrap molasses also contains 10% of the calcium needed each day. Blackstrap molasses has 2–3.5 times as much iron as light and dark molasses, which are produced after the first and second boiling of molasses, respectively. Although blackstrap molasses is a source of plant-based iron which the body typically does not absorb as well as iron from meat, its iron bioavailability is reported to be around 85%, which is considered high.
Cane molasses contains approximately 6,000 mg/kg inositol, 800 mg/kg niacin, and 5 mg/kg pyridoxine. In comparison to commonly used grains, the biotin content is quite high in both cane and beet molasses. However, the vitamin content of molasses is subject to wide variations. These variations, coupled with their relatively low content in molasses, tend to diminish their nutritional significance.
3.3 Polyphenols and Phytochemicals
Total polyphenol and flavonoid concentration in enriched molasses fractions is more than 10-fold higher than in crude extracts, and quantitative analysis has identified 13 polyphenols including chlorogenic acid, caffeic acid, sinapic acid, syringic acid, vanillin, homoorientin, orientin, vitexin, swertisin, diosmin, apigenin, tricin, and diosmetin. Among these, polyphenols are the most abundant, with chlorogenic acid (CA) being a major phenolic acid.
Sugarcane molasses is rich in polyphenols such as chlorogenic acid (CA) and caffeic acid, which show potential for intervention in chronic diseases. Mass spectrometry/mass spectrometry (MS/MS) analysis allowed the tentative identification of seven apigenin-C-glycosides, three methoxyluteolin-C-glycosides, and three tricin-O-glycosides. The results demonstrated that sugarcane molasses can be used as a potential source of polyphenols that can be beneficial to health.
3.4 Betaine
Molasses is also rich in betaine, mediating for several health benefits and treating ailments such as hyperhomocysteinemia and reproductive functions. Betaine (trimethylglycine) is an essential biochemical molecule of the methionine/homocysteine cycle and is synthesized by conversion of choline. Betaine is an important human nutrient obtained from various foods including sugar beet, and it has provided various health benefits including disease prevention.
3.5 Melanoidins
The dark color of molasses, particularly blackstrap, is partly attributable to melanoidins — complex brown polymers formed during the Maillard reaction (non-enzymatic browning) between reducing sugars and amino acids during heat processing. Fractionated melanoidin-like products (MLPs) from sugarcane molasses have been studied for their antioxidant properties. Radical scavenging activities of fractionated MLP were evaluated based on methanol concentration used during fractionation, and higher methanol concentrations enhanced antioxidant capacity against DPPH and superoxide anion radicals.
4. Mechanisms of Action
4.1 Antioxidant Activity
The antioxidant activity of sugarcane molasses ethanol extract (ME) and its fraction (ME-RBF) was evaluated using ABTS, ORAC 6.0, and CAA assays, and ME-RBF demonstrated 26-fold, 12-fold, and 2-fold higher values, respectively, than ME. Total polyphenol and flavonoid concentration in ME-RBF are more than 10-fold higher than ME, suggesting antioxidant activity is correlated with polyphenol composition.
The protective effect of sugarcane molasses against DNA oxidative damage was demonstrated in vitro against induced oxidative stress in human HepG2 cells, with a comparable effect to the positive control α-tocopherol, which is a potent antioxidant acting as peroxyl radical scavenger (Valli et al., 2012).
4.2 Anti-Inflammatory Mechanisms
Sugarcane molasses was reported to act as an anti-mutagen in a bacterial model and had shown inhibitory effect on nitric oxide production in lipopolysaccharide-stimulated macrophages, suggesting anti-inflammatory activity (Wang et al., 2011). Molasses polyphenol extract (SP) significantly reduced the levels of pro-inflammatory cytokines, including interleukin-1β, interleukin-6, and tumor necrosis factor-α, thereby alleviating hepatic inflammatory infiltration. Mechanistic studies revealed that SP effectively mitigated alcohol-induced oxidative stress and inflammatory injury by inhibiting cytochrome P450 2E1 overexpression, regulating the Kelch-like ECH-associated protein 1 (Keap1) signaling pathway, and suppressing nuclear factor-kappa B (NF-κB) pathway activation.
4.3 Iron Delivery and Bioavailability
Molasses contains iron and its absorption enhancers, such as sulfur, fructose, and copper, which make it a potential dietary supplement for iron deficiency anemia (IDA). The concurrent presence of organic acids and certain sugars in molasses may facilitate iron absorption, distinguishing it from isolated inorganic iron salts.
4.4 Osmotic and Laxative Effect
The laxative effect of molasses — particularly when used as a rectal enema — is thought to be primarily osmotic in nature. The high sugar concentration draws water into the intestinal lumen, softening stool. Blackstrap molasses is high in magnesium, which can act as a natural laxative by promoting bowel movements. Magnesium aids in relaxing the intestinal muscles and drawing water into the intestines, making stool easier to pass.
4.5 Betaine's Role in Homocysteine Metabolism
Betaine serves as a methyl donor and plays an important role in reducing homocysteine (Hcy). By donating a methyl group to homocysteine, betaine participates in converting it to methionine, thereby reducing circulating homocysteine levels — a mechanism relevant to cardiovascular health and inflammatory conditions.
5. Scientific Evidence by Area of Use
5.1 Constipation (Pediatric)
Oral Administration:
A randomized controlled double-blinded trial evaluated the efficacy of oral administration of blackstrap molasses (sugarcane extract) in comparison with polyethylene glycol on pediatric functional constipation (Dehghani SM et al., Journal of Ethnopharmacology, 2019; 238:111845). Both showed comparable efficacies of blackstrap molasses to the standard treatment (polyethylene glycol) in treating pediatric constipation. Recent research verifies its ability to address constipation in children.
Evidence strength: One published RCT (2019) supports oral use in pediatric functional constipation. The finding of comparability to polyethylene glycol is clinically significant, though independent replication is lacking. Limited research about the health effects of molasses is available overall.
Rectal Enema (Milk and Molasses Enemas — MME):
A study determined the safety and efficacy of routine milk and molasses enemas (MME) compared with sodium phosphate enemas for the treatment of constipation in the pediatric emergency department (ED). Both treatment groups had similar baseline characteristics, and no statistically significant differences in treatment effect were noted between MME and sodium phosphate enemas. There were 6 cases of treatment failure with sodium phosphate enemas versus 1 case with MME. No statistically significant differences were found between MME and sodium phosphate enemas, and the two treatment options were found to be equally safe and effective.
A subsequent study described current nursing practice and clarified the safest and most effective dose of milk and molasses enemas used to relieve constipation in pediatric patients presenting to a suburban pediatric emergency department, based on consecutive patients aged 2 to 17 years. There was an 80% success rate with patients who received at least 3 mL/kg (aged 10–15 years) and an 83% success rate with patients who received less than 3 mL/kg (older than 15 years). Stool output was achieved in more than 80% of enema administrations.
Evidence strength: Multiple retrospective and comparative studies in pediatric emergency settings have been published in peer-reviewed journals, demonstrating that MME are safe and at least as effective as sodium phosphate enemas. However, most evidence is retrospective; large prospective RCTs are lacking. The North American Society for Pediatric Gastroenterology, Hepatology, and Nutrition (NASPGHAN) and the European Society for Pediatric Gastroenterology, Hepatology, and Nutrition (ESPGHAN) developed a guideline for the evaluation and treatment of functional constipation in infants and children; it is important to note that MME was not reviewed in those guidelines.
5.2 Iron Deficiency Anemia
Iron deficiency anemia (IDA) is a serious public health problem that debilitates approximately 1.6 billion people globally every year, the majority being pregnant women and children from developing countries. In India, in spite of several operational programs at the national level using iron-folic acid and other allopathic interventions, IDA is still prevalent. Traditional medicines, such as Ayurveda, prescribe herbal formulations containing sugarcane derivatives for the management of pandu, a condition similar to IDA.
Molasses contains iron and its absorption enhancers, such as sulfur, fructose, and copper, which make it a potential dietary supplement for IDA. More research, product development, and evidence of safety and efficacy of molasses in IDA management are needed.
The actual iron content of molasses is relatively modest: a tablespoon of blackstrap molasses contains about 3.5 mg of iron, which is about 20% of the recommended daily intake for adult women. While this is more than many other sweeteners, it is not high enough to be considered a potent treatment for anemia, especially in moderate to severe cases. Scientific literature does not strongly support the use of molasses as a primary treatment for anemia; clinical trials are limited.
Evidence strength: Use for iron deficiency anemia is supported by traditional practice and plausible biochemical rationale (iron content, absorption co-factors), but dedicated human clinical trials evaluating molasses itself as a treatment for IDA are lacking. The evidence base is preliminary and descriptive.
5.3 Antioxidant and Anti-inflammatory Effects
Recent preclinical studies on a polyphenol-rich sugarcane extract showed therapeutic potential to regulate carbohydrate metabolism and protect against metabolic disorders such as type-2 diabetes by upregulation of insulin production in dysfunctional pancreatic cells and modulation of glucose and fructose transport across epithelial membranes in Caco-2 cells (Ji, Yang, Flavel, Shields, & Kitchen, 2019). These findings are from in vitro and cell-culture models.
A 10-week nutritional intervention study in C57BL/6J mice explored the effects of a sugarcane molasses polyphenol extract (SP) on alcohol-induced chronic liver damage. Results demonstrated that SP intervention significantly inhibited the liver index, alanine aminotransferase and aspartate aminotransferase activities, and triglyceride and total cholesterol accumulation. SP enhanced antioxidant enzyme activities in a dose-dependent manner, with the high-dose group increasing catalase activity by 161.19% and superoxide dismutase activity by 22.97%.
Evidence strength: Evidence for antioxidant and anti-inflammatory activity is predominantly from in vitro and animal studies. No controlled human clinical trials specifically assessing molasses-derived polyphenols for antioxidant outcomes have been published.
5.4 Ulcerative Colitis and Immune Modulation
Ulcerative colitis (UC) is an inflammatory disease of the gut with frequent bloody diarrhea that leads to increased rates of anemia. Evidence indicates immunomodulation disorders in the response to intestinal microbiota in UC. Although sugarcane molasses, rich in necessary minerals and vitamins, could be a good support nutrient, its effect on the immune system of UC patients was not previously known. A study was planned to determine how the immune system of UC patients responds to molasses. Bifidobacterium lactis were cultivated on MRS broth. Peripheral blood mononuclear cells (PBMCs) of 12 UC patients were separated by Ficoll-Hypaque centrifugation and co-cultured with different concentrations of UV-killed bacteria and/or molasses.
The betaine component of molasses has also attracted scientific interest in the context of colitis. Studies aimed to explore whether betaine supplementation could protect against acute severe ulcerative colitis (ASUC) in animal models induced by dextran sulfate sodium (DSS), evaluating effects of betaine as a methyl donor. Betaine mitigated elevated disease activity index, weight loss, spleen enlargement, colon shortening, and disordered colonic mucosa. Spectrophotometry and western blot confirmed that betaine can decrease levels of oxidative markers (MDA, MPO, NOS, and COX2), and promote expressions of antioxidant proteins (GSH, NRF2, CAT, and SOD1).
Evidence strength: The UC-related evidence is from small in vitro studies (12 patients' PBMCs) and animal models of betaine supplementation. Direct evidence from clinical trials using whole molasses for UC management is absent.
5.5 Bone Health
Blackstrap molasses may make osteoporosis less likely. A single tablespoon of blackstrap molasses contains 10% of the calcium needed each day, and adults with higher levels of calcium tend to have better bone density and are less likely to develop osteoporosis. Calcium and magnesium in blackstrap molasses contribute to bone health, supporting growth and maintenance. However, no clinical trials have specifically investigated molasses as an intervention for bone mineral density outcomes.
Evidence strength: Evidence is entirely indirect and inferential, based on the established roles of calcium, magnesium, and manganese in bone physiology. No controlled human studies of molasses for bone health exist.
5.6 Blood Sugar and Glycemic Effects
The glycemic index of blackstrap molasses is reported to be 55 (right on the border between low and moderate) compared to table sugar which is 80 (high). Many people use blackstrap molasses in place of refined sugars for health reasons. They are lower on the glycemic index than conventional sweeteners, which means they will not spike blood sugar as much.
Preclinical studies on a polyphenol-rich sugarcane extract showed therapeutic potential to regulate carbohydrate metabolism and protect against metabolic disorders such as type-2 diabetes by upregulation of insulin production in dysfunctional pancreatic cells and modulation of glucose and fructose transport across epithelial membranes in Caco-2 cells.
Evidence strength: The reported glycemic index of 55 is derived from food composition studies and is a useful comparative metric, but no dedicated controlled human trials have assessed molasses's effect on glycemic control in people with diabetes or prediabetes.
5.7 Liver Protection
A study explored the therapeutic potential of sugarcane molasses polyphenol extract (SP) in alcohol-induced chronic liver damage. A graded alcohol concentration-induced liver damage model was established in C57BL/6J mice to systematically evaluate SP's regulatory effects on liver function markers, lipid metabolism, oxidative stress indicators, inflammatory factors, and related molecular mechanisms through a 10-week nutritional intervention. Results demonstrated that SP intervention significantly inhibited the liver index, alanine aminotransferase and aspartate aminotransferase activities, and triglyceride and total cholesterol accumulation in mice.
Evidence strength: Animal (murine) study only. No human clinical data are available for molasses as a hepatoprotective agent.
6. Body Systems and Health Areas Associated with Molasses
- Hematological system: Iron content links molasses to red blood cell production and iron deficiency anemia management.
- Digestive/gastrointestinal system: Use as a laxative (osmotic mechanism), and potential immunomodulatory effects in inflammatory bowel conditions.
- Musculoskeletal system: Calcium and magnesium content associated with bone and muscle health.
- Cardiovascular system: Betaine's role in homocysteine reduction is relevant to cardiovascular risk; potassium content is associated with blood pressure regulation.
- Metabolic/endocrine system: Moderate glycemic index; preclinical evidence for effects on glucose metabolism and insulin function.
- Hepatic system: Preclinical evidence for polyphenol-mediated hepatoprotection against oxidative and alcohol-induced injury.
- Immune system: Preliminary in vitro evidence for immune modulation in UC patients' cell cultures.
7. Dosage Forms and Dosages Reported in Studies
Molasses is used in multiple forms and doses, which vary considerably by application:
- Oral (pediatric constipation RCT): A randomized controlled double-blinded trial evaluated oral administration of blackstrap molasses (sugarcane extract) in comparison with polyethylene glycol on pediatric functional constipation (Dehghani SM et al., J Ethnopharmacol 2019; 238:111845). The specific dosing protocol for the oral molasses arm is detailed in that publication.
- Rectal enema (MME): In retrospective pediatric studies, an 80% success rate was observed with patients receiving at least 3 mL/kg (aged 10–15 years), and an 83% success rate with patients receiving less than 3 mL/kg (older than 15 years).
- Dietary supplement serving: A tablespoon (20 g) of blackstrap molasses is a commonly referenced serving size, containing approximately 60 calories and 15 g of carbohydrates.
- Animal study (molasses polyphenol extract): A 10-week nutritional intervention in C57BL/6J mice assessed graded concentrations of SP; the high-dose group achieved the greatest antioxidant enzyme activity increases. Specific mg/kg doses used were reported within the primary publication.
- Betaine supplementation (animal model): In a rodent study, betaine at 2.5% w/v was supplemented via drinking water for 14 days.
No standardized therapeutic dosage for molasses as a dietary supplement has been established by any regulatory health authority. Limited research about the health effects of molasses is available, and formal dose-ranging clinical trials are absent from the published literature.
8. Safety Considerations and Interactions
8.1 Sugar Content and Caloric Burden
In addition to containing vitamins and minerals, molasses is very high in sugar. In excess, sugar can be very harmful to a person's health. Blackstrap molasses is sugary and calorie-dense. Consuming it in large amounts may lead to weight gain or affect blood sugar control over time.
8.2 Sulfur Dioxide and Sulfite Sensitivity
The sugarcane used in sulfured molasses does not have as much time to mature and may require the addition of sulfur dioxide as a preservative, which can impact people with allergies to some preservatives. There is a possible connection between sulfur dioxide and an allergic response to sulfites for some people. Individuals with known sulfite sensitivity should select unsulfured preparations.
8.3 Heavy Metal Contamination
A Canadian Food Inspection Agency survey analysed 422 samples of exotic meat, seafood, and sugar/molasses for arsenic, cadmium, lead, and mercury. Most (85%) of the survey samples contained one or more metals, whereas 13% of the samples contained traces of all four metals.
In a published assessment of grape molasses, the levels of arsenic, lead, cadmium, and aluminum were investigated in both traditionally and industrially produced samples. All samples had a target hazard quotient and index ≤1 indicating no undue non-carcinogenic risk from exposure to a single or multiple toxic elements. However, three traditionally produced samples exceeded the threshold limit of acceptable cancer risk. The observation of higher levels of toxic metals in traditionally produced molasses was noted as a concerning point for public health, and the national authority was encouraged to increase supervision of traditional food production.
8.4 Acrylamide
About 901 ppb of acrylamide has been found in black molasses. The World Health Organization has stated that elevated levels of acrylamide in foods are a major concern and a potential risk for cancer development. Citizen plaintiff groups have issued acrylamide notices for products including molasses in California (Proposition 65 proceedings). The significance of acrylamide at levels found in molasses for routine dietary use remains an area requiring further risk assessment.
8.5 Cardiopulmonary Risk with Enemas
Cardiopulmonary compromise associated with milk and molasses enema use in children has been reported (Walker M et al., Journal of Pediatric Gastroenterology and Nutrition, 2003; 36(1):144–148). This represents a documented safety signal requiring careful patient selection and monitoring when MME is used in pediatric clinical settings.
8.6 Interactions and Contraindications
The high potassium content of blackstrap molasses may be relevant for individuals with impaired renal function or those taking potassium-sparing diuretics or potassium supplements, as excess potassium intake can cause hyperkalemia. The iron content may interact with iron absorption inhibitors (e.g., calcium, certain polyphenols in high doses) or with medications whose absorption is affected by iron, such as levothyroxine, certain fluoroquinolone antibiotics, and bisphosphonates, though no specific interaction studies for molasses per se have been published. The high sugar content is relevant for individuals managing blood glucose pharmacologically.
Limited research about the health effects of molasses is available, and the overall safety profile of molasses at food-level consumption appears acceptable based on its centuries-long history of dietary use. Evidence for safety at supplemental doses consumed over long periods is not established.
References
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