Royal jelly: the nectar of queens

Royal jelly has become a leading product in nutrition and natural health. It is credited with multiple benefits, from boosting vitality to improving immune responses. But what exactly is royal jelly, how is it produced and what does science say about it? In this article, we explore in detail royal jelly’s origins, its composition, potential benefits, the risks and precautions to consider, and the latest scientific research that supports—or does not support—its properties.

1. What is royal jelly?

Royal jelly is a secretion produced by the hypopharyngeal and mandibular glands of worker bees (Apis mellifera) to feed the queen bee throughout her life. This creamy white substance with a slightly acidic taste is, in fact, the queen’s “exclusive food,” allowing her to grow larger than the workers and extend her life expectancy several years beyond the rest of the colony.

Although royal jelly has earned an almost “magical” reputation as a superfood, its components and properties can be explained through biochemistry and scientific research. The key factor distinguishing it from pollen or honey is its complexity: it contains proteins, lipids, sugars, minerals and vitamins, as well as specific bioactive substances that remain under investigation.

References:

García-Amoedo LH, Almeida-Muradian LB. “Physicochemical composition of royal jelly produced by Africanized honeybees in the south of Minas Gerais, Brazil.” Journal of Apicultural Research. 2013;52(1):8-14.
Ramadan MF, Al-Ghamdi A. “Bioactive compounds and health-promoting properties of royal jelly: A review.” Journal of Functional Foods. 2012;4(1):39-52.

2. Production and origins within the hive

To understand why royal jelly is so special, it helps to briefly examine how it is produced in the hive. Young worker bees (between 5 and 15 days old) secrete and deposit royal jelly in the cells where larvae will develop. All bee larvae receive royal jelly during their first days of life, but the future queen feeds exclusively on it continuously. This creates radical differences in their development:

Size and morphology: The queen can be up to 40–50% larger than the workers.
Longevity: The queen can live for 3 to 5 years, compared with the workers’ approximately 45-day lifespan during the active season.
Fertility: The queen bee is the only one that can reproduce, laying thousands of eggs a day.

This striking differentiation has sparked scientific and commercial interest in royal jelly, with the hypothesis that its substances could have beneficial effects on the human body.

References:

Buttstedt A, Moritz RF, Erler S. “More than royal food – Major royal jelly protein genes in sexuals and workers of the honeybee Apis mellifera.” Frontiers in Zoology. 2013;10(1):72.
Kamakura M. “Royalactin induces queen differentiation in honeybees.” Nature. 2011;473:478-483.

3. Nutritional composition and bioactive compounds

Royal jelly is a complex mixture of nutrients and bioactive substances. Its composition can vary depending on factors such as bee genetics, the colony’s diet and geographical region. Broadly speaking, however, it consists of:

Proteins (9–18%)
It includes unique proteins known as major royal jelly proteins (MRJPs), which may influence immune system modulation and cellular regeneration.
Carbohydrates (10–20%)
Mainly fructose and glucose, sugars that provide energy and mild sweetness.
Lipids (3–8%)
Notable among these are short-chain fatty acids, such as 10-hydroxydecanoic acid (10-HDA), considered one of the most relevant bioactive components for its possible antimicrobial and antioxidant properties.
Vitamins and minerals
It contains B vitamins (especially B5 and B6), as well as traces of minerals such as calcium, iron, phosphorus and zinc.
Other bioactive substances
These include peptides and hormones that may contribute to its purported health-promoting properties.

References:

Isidorov VA, Bakier S, Grzech I. “Chemical composition and antimicrobial activity of Polish herbhoney.” Food Chemistry. 2015;171:84-88.
Liu JR, Yang YC, Shi LS, Peng CC. “Antioxidant properties of royal jelly associated with larval age and time of harvest.” Journal of Agricultural and Food Chemistry. 2008;56(23):11447-11452.

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4. Potential benefits: what does science say?

Although royal jelly has traditionally been used as a natural restorative and credited with benefits for longevity or improved fertility, we need to examine what current research says:

Immune system support
Some studies suggest that certain peptides and components in royal jelly can stimulate immune cell activity, helping the body defend itself more effectively against pathogens.
Energy and vitality
Its carbohydrate, vitamin and trace element content may contribute to a feeling of greater energy. However, larger clinical trials are needed to establish a firm cause-and-effect relationship.
Antioxidant effect
The fatty acids and peptides present in royal jelly may have antioxidant activity, protecting cells from oxidative damage. This could have a positive impact on cardiovascular health and cellular aging.
Possible blood lipid regulation
Some preliminary studies suggest that consuming royal jelly could help reduce cholesterol of the LDL (“bad”) type and triglycerides, although the results are not conclusive.
Skin health support
Because of its protein and B vitamin content, it has been used topically and in cosmetics to improve skin appearance and promote cellular regeneration.

It is essential to point out that most studies have involved small groups or animal models, so substantial research is still needed to determine how far royal jelly delivers these benefits in clinical practice.

References:

Viuda-Martos M, Ruiz-Navajas Y, Fernández-López J, Pérez-Álvarez JA. “Functional properties of honey, propolis, and royal jelly.” Journal of Food Science. 2008;73(9):R117-R124.
Pasupuleti VR, Sammugam L, Ramesh N, Gan SH. “Honey, propolis, and royal jelly: A comprehensive review of their biological actions and health benefits.” Oxidative Medicine and Cellular Longevity. 2017;2017:1259510.

5. Risks, precautions and contraindications

Although royal jelly is generally considered safe for most healthy adults, it is not without risks:

Allergic reactions
Some people may have severe allergies to pollen, honey or bee products. Royal jelly can trigger reactions ranging from hives to asthma and anaphylactic shock.
Gastrointestinal problems
Excessive consumption may cause stomach discomfort, diarrhea or nausea in sensitive individuals.
Medication interactions
If you are receiving medical treatment (for example, for high blood pressure or diabetes), consulting a healthcare professional before taking royal jelly regularly is advisable, as it may alter blood glucose or blood pressure.

Given its popularity, seeking products with quality seals and a recognized origin is essential, avoiding adulteration or mixtures that may reduce the product’s purity and safety.

References:

Mishima S, Suzuki KM, Isohama Y, Kuratsu N. “Quality control of royal jelly.” Journal of Medicinal Food. 2005;8(1):84-89.
EFSA (European Food Safety Authority). “Scientific opinion on the substantiation of health claims related to royal jelly.” EFSA Journal. 2010;8(2):1499.

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6. Forms of consumption and practical recommendations

Royal jelly is available in various forms: fresh (refrigerated), freeze-dried, in capsules, mixed with honey or even combined with ginseng and other ingredients. The choice depends on personal preferences and individual goals:

Fresh royal jelly: It is kept chilled and usually taken directly under the tongue. Its flavor is somewhat acidic and strong.
Capsules or tablets: They usually contain freeze-dried royal jelly. They are more convenient to take away from home and have a neutral taste.
Honey preparations: Mixing royal jelly with honey masks its flavor and extends its shelf life, while providing the benefits of both products.

Regarding dosage, between 500 and 1000 mg of royal jelly per day (or its fresh equivalent) is usually recommended, although the exact amount can vary depending on the product’s concentration and quality. Consulting a professional before beginning prolonged use is always advisable.

References:

Karaca N, Ozturk F. “Effects of processing technology on bioactive components and biological activities of royal jelly.” Food Reviews International. 2021;37(2):117-135.

7. Recent advances and future research

Royal jelly remains the subject of numerous studies seeking to identify its active components and mechanisms of action in the human body precisely. Some promising research areas include:

Use as an adjunct in fertility therapies: Researchers are exploring whether certain royal jelly peptides can affect egg or sperm quality.
Applications in regenerative medicine: Preliminary research suggests that MRJPs and other factors may stimulate tissue regeneration, although larger clinical trials are still needed.
Neuroprotection and cognitive health: Experiments in mice have evaluated royal jelly’s potential to prevent oxidative stress in the brain and improve cognitive function.

Although these studies are encouraging, further research and large-scale clinical trials are needed to conclusively confirm royal jelly’s effectiveness in these areas.

References:

Honda Y, Araki Y, Hata T, Ichihara K. “Royal jelly as a dietary supplement to potentially prevent cognitive decline.” Nutrients. 2021;13(5):1632.
Nagai T, Inoue R. “Preparation and functional properties of extracts from royal jelly.” Food Chemistry. 2014;160:348-352.

8. Conclusions

Royal jelly is undoubtedly an extraordinary product in the world of bees and human nutrition. From its exclusive production to nourish the queen of the hive to the rich variety of proteins, fatty acids and vitamins it contains, it has established itself as a natural resource worthy of admiration and study. However, although scientific evidence supports many of its potential virtues, it is also important to remember that it is not a miracle remedy or a substitute for a balanced lifestyle.

Consuming royal jelly responsibly, paying attention to quality, origin and possible allergies, may be a way to supplement the diet and obtain benefits on several levels. Research interest in this product continues, so we are likely to discover new secrets and therapeutic applications in the coming years.