118: Honey vs. Sugar: What’s Better for Metabolic Health? with Dr. Ben Bikman

Bikman bases this on the 2024 study where subjects with mild metabolic issues replaced 5% of calories from refined sugar with pure maple syrup for 8 weeks, resulting in better glucose tolerance, lower blood pressure, and less abdominal fat. He also notes that darker grades of honey and maple syrup have 2-3x more antioxidants. The substitution approach ensures you're not adding calories but benefiting from the non-sugar fraction; it's the polyphenol and mineral content that differentiates these from table sugar, not just the lower GI.

Bikman presents this theory as plausible but not settled. Referring to the peanut allergy desensitization paradigm, he notes that raw honey could provide ‘micro doses of regional pollen’ and cites a 2013 study where 1 g/kg of birch pollen honey reduced symptoms in allergic patients over a few months, outperforming regular honey. However, he immediately brings up the 2018 Cochrane review that casts doubt, attributing some benefit to honey's texture. His overall tone is that raw local honey may help and is unlikely to harm in small amounts, making it worth trying for allergy sufferers.

Bikman mentions ‘Grandma's old cough medicine’ of raw honey, lemon, and hot water, emphasizing honey's role as a ‘pretty potent antibiotic.’ He ties this back to the WWI topical use, noting that the same antibacterial mechanisms (peroxide, low pH, osmotic) apply to the throat. He doesn't cite specific clinical trials for this, but his confidence stems from the basic science of honey's antimicrobial action.

Bikman explains that during WWI supply shortages, Russian physicians applied honey topically to infected wounds, noting it prevented sepsis and accelerated healing. German medics mixed it with cod liver oil for gangrene and ulcers. Post-war, a 2017 review confirmed honey's efficacy against wound infection, reducing healing time by up to 40% compared to standard dressings. He attributes this to three mechanisms: an osmotic pull that dehydrates and kills bacteria, natural hydrogen peroxide produced by the enzyme glucose oxidase (which is preserved in raw, unheated honey), and a low pH lethal to microbes. He then pivots to a contemporary theory: consuming local raw honey introduces micro-doses of regional pollen, potentially building tolerance like allergy immunotherapy. A 2013 study found that 1 g/kg body weight of birch pollen honey reduced allergy symptoms in 17 allergic patients over a few months. A larger 2018 Cochrane review, however, concluded that benefits for allergies are unproven and may be partly due to honey's soothing texture. Bikman frames the evidence as interesting but not definitive.

Bikman breaks down honey as ~80% sugar (roughly equal fructose and glucose, plus traces of maltose) and the remaining ~20% as water, enzymes, B vitamins, minerals like potassium and iron, and over 200 bioactive molecules such as flavonoids and phenolic acids. Raw honey retains heat-sensitive enzymes: glucose oxidase (generates antibacterial peroxides), invertase (splits sucrose into monosaccharides), diastase, catalase (regulates peroxide levels), acid phosphatase (helps maintain low pH to block microbes), and trace proteases (aid protein digestion). This enzymatic and polyphenol package gives honey a lower glycemic index than sugar. Maple syrup is ~60% sucrose, the rest water, with over 100 polyphenols (some formed during boiling) and a rich mineral content, especially manganese. Darker grades (e.g., buckwheat honey, darker maple syrups) contain two to three times more antioxidants than lighter varieties. Bikman emphasizes that these differences mean the body does not handle honey or maple syrup like table sugar — there's a slower glucose rise, potentially less insulin spike, and direct effects via antioxidants that reduce oxidative stress.

Bikman walks through several honey flavonoids and their fat-cell targets. Quercetin activates AMPK pathways to suppress differentiation of pre-adipocytes into mature fat cells and simultaneously dials down inflammatory signaling in adipose tissue. Myricetin curbs lipogenic genes like SREBP-1c, a master regulator of fat synthesis. Galangin blocks weight gain by limiting fat cell expansion. Other compounds like kaempferol, chrysin, apigenin, and hesperitin each have distinct effects on fat cell dynamics, collectively creating a ‘metabolic milieu’ that discourages fat storage and encourages fat breakdown. He tempers this enthusiasm by noting that while these mechanisms are compelling and consistently seen in controlled animal studies, human trials have not shown clear weight-loss effects — honey and maple syrup don't cause weight loss on their own. The likely real-world scenario is that when they replace refined sugar, they offer a modest advantage rather than acting as a weight-loss agent.

Bikman cites a two-week study comparing honey, sucrose, and high-fructose corn syrup in both glucose-tolerant and glucose-intolerant adults; all three produced similar effects on glucose, insulin, and blood lipids, suggesting no acute glucose advantage for honey. In people with type 2 diabetes, an eight-week crossover trial giving 50 g of ‘natural honey’ daily found modest improvements in triglycerides and cholesterol but no reduction in HbA1c or fasting glucose. Systematic reviews confirm honey more reliably improves triglycerides than blood sugar. Animal models, where diet is perfectly controlled, do show better effects — hence the enthusiasm from the polyphenol mechanisms. The newer maple syrup data (2024 study) stands out: adults with mild metabolic syndrome who replaced 5% of calories from refined sugar with pure maple syrup for eight weeks showed better glucose tolerance, slightly lower blood pressure, and a small reduction in abdominal fat. Bikman frames the takeaway as substitution, not addition — when these sweeteners replace refined sugar, the polyphenols and lower effective sugar dose provide a modest metabolic edge, but they are still sugars and should be consumed sparingly.