Saffron benefits and effects: what studies show

Saffron – one of the most expensive spices in the world, but in recent years, it has been increasingly discussed in the context of health. Especially due to the biologically active compounds it contains, which are associated with certain bodily functions.

However, saffron is often discussed very differently – from “highly valuable” to “overrated”. Therefore, the natural question arises: does saffron actually have a proven health benefit, or are most of these claims exaggerated?

In this article, we will discuss what saffron is, its composition, what scientific research says about its effects, and in what situations the use of saffron supplements may be considered.

Saffron is a spice derived from the stigmas of the Crocus sativus flower, distinguished not only by its color and aroma but also by the biologically active compounds it contains. Although it is most commonly known as a spice, saffron's value is also inextricably linked to its composition – it is precisely because of this that it has been increasingly discussed in the context of health in recent years.

Saffron is obtained from Crocus sativus – a plant belonging to the crocus family. Only a very specific part of its flower is used – the stigmas (thin, reddish-orange threads), which are harvested by hand and dried, and then used as a spice or raw material for supplements.

It is this part of the plant that becomes the saffron we know – a concentrated product, small in quantity but with exceptional properties. 

The price of saffron is primarily related to its extraction process. All threads are harvested by hand, and about 150,000 flowers can be required for 1 kilogram of saffron. This results in a highly concentrated product, where even a small amount is considered extremely valuable.

The value of saffron is associated not only with its origin or the difficulty of extraction but also with the biologically active compounds it contains. It is these compounds that determine why saffron is studied in the context of health.

• Crocin. One of the main carotenoids in saffron, responsible for its vibrant color. There are data that crocin possesses antioxidant properties and can help reduce oxidative stress.

• Safranal. A compound that gives saffron its characteristic aroma. Some studies have observed that safranal may have neuroprotective effects and contribute to the maintenance of nervous system functions.

• Picrocrocin. Responsible for saffron's bitterness and considered one of its main compounds. Its role in the human body has been less studied than other saffron components so far.

Scientific studies indicate that all these compounds act synergistically – antioxidant properties are associated with the reduction of reactive oxygen species (ROS) and cell protection from damage. There are also data that they can reduce lipid peroxidation and contribute to the regulation of anti-inflammatory processes.

In scientific studies, the health effects of saffron are usually evaluated by analyzing its active compounds and their impact on specific bodily functions. It is important to understand that results may vary depending on the form of the product used, the dose, or the duration of the study. Also, different areas of benefit are not equally substantiated – some have more clinical data, while others are still being researched.

Many clinical trials use not the spice itself, but a standardized saffron extract, which ensures a consistent amount of active ingredients.

Commonly applied doses:

• about 28-30 mg per day (of standardized extract).

Duration of studies:

• 6-12 weeks.

Most studies using such doses focus on analyses of emotional well-being and nervous system functions. It is important to understand that such doses are not achievable in a typical diet. This means that the effects observed in studies are mainly related to saffron supplements, not to the use of saffron as a spice.

Randomized controlled trials (RCTs) lasting about 6-8 weeks have found that taking 30 mg of saffron extract per day can reduce symptoms of depression compared to placebo. This effect is thought to be related to biological mechanisms. There is evidence that saffron's active ingredients may contribute to serotonin metabolism modulation and possess anti-inflammatory properties. These mechanisms are also believed to be related to the body's response to stress and the regulation of hormones such as cortisol. You can read more about how to reduce cortisol in a separate article.

Some studies have found that the effect of saffron can be similar in magnitude to certain mild depression treatment models, but it is important to emphasize that these results are mainly obtained with mild to moderate symptoms and cannot be equated with actual treatment.

Thus, saffron is not a cure for depression, but existing data suggest that it can be considered as an additional option for maintaining emotional balance. It is also important to emphasize that this is the most thoroughly researched area of saffron's effects.

The effect of saffron on vision has been studied less, but in recent years it has been increasingly explored in scientific research. The focus is mainly on retinal function and its protection from oxidative damage.

Some clinical studies on individuals with age-related macular degeneration (AMD) have observed that saffron consumption may be associated with an improvement in retinal function, as assessed by electroretinography (ERG). There is also evidence that active ingredients in saffron may help protect photoreceptors from oxidative damage and maintain their function.

However, it is important to understand that these results were obtained in specific patient groups and cannot be directly generalized to healthy individuals. A potential effect exists, but the evidence is currently limited.

The active ingredients in saffron have antioxidant properties and may help reduce oxidative stress – one of the factors associated with various chronic processes in the body. This effect is also characteristic of other antioxidants used to protect cells from oxidative stress.

There is evidence that compounds such as crocin can contribute to the reduction of reactive oxygen species (ROS) and the inhibition of lipid peroxidation, while safranal is associated with a potential neuroprotective effect.

However, it is important to understand that these effects are usually observed at a biological level and are not always directly reflected in daily well-being.

In addition to better-researched areas, the effect of saffron on health is currently being explored in other contexts. Some directions seem promising, but the current evidence is limited, requiring larger and longer-term studies to draw firmer conclusions.

Some studies have examined the potential effect of saffron on snacking and satiety. For example, one systematic review indicates that some studies observed reduced snacking and a possible satiety effect, but the number of such studies is small, and the results are not consistent.

The potential effect of saffron on cognitive functions and memory, especially in older adults, is also being investigated. These areas are often associated with the so-called brain fog, which we discuss in more detail in the article. However, current data are inconsistent and require more high-quality clinical trials.

Saffron supplements are usually considered when aiming for effects observed in clinical trials. In a normal diet, saffron quantities are very small, so the doses used in studies (about 28–30 mg of extract per day) are typically only achieved with supplements.

For this reason, supplements are the primary form when it comes to targeted saffron consumption.

It is important to consider several key aspects:

• Standardization. Look for supplements that specify the amount of active ingredients (e.g., crocin or safranal). This is important because these compounds are associated with potential effects, and their amount can vary in natural products.

• Dosage. Clinical trials most often mention about 28-30 mg per day, and in some cases, a wider range. Smaller doses may not have the same effect.

• Formula and composition. Some supplements can be combined with other substances. In such cases, it should be assessed whether this is justified or merely a marketing decision.

• Manufacturer transparency. Since food supplements are not as strictly regulated as medicines, it is important to choose reliable manufacturers who can provide clear product composition and dosage.

IMPORTANT. Currently, there are no uniform official recommendations for saffron supplement use. In practice, it is recommended to follow the information provided on the specific product label and not exceed the indicated doses.

Saffron is generally considered safe when consumed in small amounts with food. However, when it comes to concentrated extracts or supplements, it is important to consider the product's dosage and individual circumstances.

• Pregnant women. Higher doses of saffron can stimulate uterine contractions, so supplement use is not recommended.

• Breastfeeding women. There is insufficient data on safety.

• Individuals taking certain medications. Especially those affecting the nervous system or blood pressure. In such cases, it is always recommended to consult a family doctor.

• More sensitive individuals. Mild digestive or dizziness symptoms may occur.

Saffron can be consumed in various ways, but moderation and consistency are key. Since it is a highly concentrated product, even small amounts can be sufficient.

• With food. Saffron is most commonly used as a spice – added to rice, soups, or other dishes. A few threads are enough to give the dish color and aroma.

• Saffron tea. A few threads can be steeped in warm water for several minutes. This is one of the simplest ways to incorporate saffron into your daily routine.

• Supplements. If a more specific effect is desired, saffron supplements containing a standardized extract are usually chosen. This allows for precise control over the amount of product consumed.

• Avoid large quantities. A higher dose does not necessarily mean greater benefit – regularity is more important.

• Pay attention to the form. The amounts of saffron in food products are very small, so their effect may differ from the extracts used in studies.

• Store properly. Saffron should be stored in an airtight, light-protected package to preserve its beneficial properties.

Saffron is an exceptional herbal product whose value is associated not only with its origin but also with the active compounds it contains. Scientific studies show that saffron can have a positive effect on certain body functions, especially regarding emotional well-being and supporting retinal function.

However, it is important to emphasize that these effects are usually observed under specific conditions – using standardized extracts, specific doses, and for a limited period. Therefore, saffron can often be a truly valuable choice, but it is far from a universal solution for all individuals.