Nutri Courses

Advisory

Coffee

Coffee is a globally popular beverage known for its stimulating effects. It contains caffeine, which stimulates the nervous system and can help improve physical performance, increase alertness, and enhance mood. Coffee is also a source of various substances that support the immune system and may exhibit antioxidant properties. High consumption of coffee due to its caffeine content can lead to insomnia, nervousness, and increased heart rate in some individuals.

Hello,

I am interested in how it is with decaffeinated coffee. There are conflicting claims where some people assert that it does contain caffeine while others say it does not... Could you tell me which opinion you lean towards? If it contains a certain amount of caffeine, can drinking decaffeinated coffee also become an "addiction"?

Thank you.

Even decaffeinated coffee contains a small percentage of caffeine (approximately equivalent to 3-5% of the original content) - this is not an opinion, but a fact based on the technologies used to produce decaffeinated coffee. Consuming such coffee does not cause caffeine addiction, as its content is too low for that. However, it is a fact that caffeine is not the only stimulating substance, and some of them remain in the product in certain amounts even after the decaffeination process. A certain form of dependency might be discussed in situations where a high number of cups of such coffee are consumed daily (e.g., 10 or more).

Good day.
A colleague of mine regularly eats the leftover grounds after drinking Turkish coffee. I have also encountered the consumption of whole coffee beans as part of a Spanish drink. Isn't this too much of a shock for the body (e.g., due to the high concentration of caffeine or for other reasons)? Could the consumption of coffee grounds have any positive effects? I actually use it more for fertilizing plants :D.
Thank you for the response.

Coffee grounds are waste and should be treated as such. Consider their consumption as a health risk, as regular doses or larger quantities, due to the higher concentration of certain substances, can irritate the mucous membrane of the digestive tract. Scientific literature also indicates their ability to raise levels of total and LDL cholesterol, for which the compounds cafestol and kahweol are responsible.

Hello, Mr. Jelínek,

Can a woman drink green tea during pregnancy, or is it the same as with coffee due to the theine content? I read somewhere that a mother's diet before conception can influence the gender of the future child, what is your opinion on this?

Have a nice day and thank you.

During pregnancy, it is generally advisable to limit caffeine intake. Green tea is a source of this substance, so recommendations suggest monitoring the amount of this beverage as well. Compared to black tea, however, green tea contains less caffeine, and it also offers the benefit of antioxidant substances, so it is not necessary to eliminate green tea from the list of foods.

Regarding the influence of a mother's diet before conception on the child's gender, there is no scientific evidence to support this. The child's gender is determined genetically and is random. However, there are numerous studies indicating relationships and connections with external environmental influences, including the quality of diet (energy content, nutrient representation...), but these are not conclusive.

Hello,

I would like to ask whether beverages such as coffee, black tea, and broths should be included in the hydration regimen. There are varying opinions on this matter, so I would like to know your perspective. Personally, I would include them, even though coffee and tea have mild diuretic effects. I know people who barely drink water, only coffee and tea.

Thank you.

In the hydration regimen, fluids that serve the purpose of hydrating the body are typically included. However, this definition is not entirely straightforward, as, for example, coffee or tea contain substances with diuretic effects, which do not align with the concept of complete hydration. The issue with these beverages is that they do not have a diuretic effect on everyone, and their diuretic impact is highly individual. In such situations, it is naturally challenging to generalize, but these drinks are generally included in the hydration regimen (a similar issue arises with beverages containing alcohol). Broths are also usually considered part of the hydration regimen, but they are burdened by the factor of osmolality—if their "density" (i.e., nutrient content) is too high, they are categorized as food, not a fluid intended for hydration.

Hello,
is it advisable to use guarana during PMS/before menstruation if I exercise and need energy and strength during my training period? Or is it better to let hormones function naturally and "come to terms" with having less energy?
And one more question, what effect does combining it with coffee have? Does it not cause unpleasant trembling, sweating, or anxiety if a person consumes 1-2 medium-strength coffees per day?
Thank you in advance for your response, have a nice day :)

Guarana has fewer side effects than coffee, which may make it seem more advantageous in this regard. However, it is still a source of caffeine, which is better to avoid during PMS. As an alternative, try adaptogens; they have a significantly more favorable effect on the course of PMS.

While combining guarana with coffee does stimulate the nervous system and the cardiovascular system to higher activity, it also increases the risk of synergism in side effects. Even though it depends on the metabolic individuality of the person, i.e., in relation to caffeine, on the ability to efficiently metabolize this substance, try to avoid this combination as it unnecessarily stresses the entire organism.

Test the effects of adaptogens with ginkgo; it is a more advantageous route.

Hello.
We know that coffee generally does not benefit our health, but I would like to ask your opinion on the caffeine contained in coffee as a fat burner (many people have the notion that the best fat burner is a good strong Turkish coffee in the morning on an empty stomach :-) ).
Thank you in advance for your response.

Caffeine does not function as a direct fat burner; its effect is indirect—it stimulates the activity of the autonomic nervous system, through which metabolic processes are accelerated. If physical activity is part of the weight reduction process, the likelihood that the entire process will proceed somewhat faster increases. However, do not expect any miracles in this regard, and consider the risk that caffeine may not work equally for every individual. With dietary supplements (fat burners), also take into account the caffeine doses contained, which are often many times higher than those in coffee in a single serving, leading to potential overdosing effects.

Consuming coffee on an empty stomach in the morning is not entirely a wise decision—the substances produced when coffee is over-roasted can irritate the mucous membrane of the digestive tract, and caffeine is absorbed quickly, increasing the body's stress responses.

Questions answered by

Mgr. Martin Jelinek
Lecturer and author of the educational system

Mgr. Martin Jelínek has been systematically involved in nutrition education since 1999. He is the founder of ATAC, the educational company behind NutriCourses, and the author of an educational system focused on nutrition, healthy lifestyle, and the practical application of nutrition knowledge.

He graduated from the Faculty of Science at Masaryk University in Brno. Throughout his professional career, he has combined nutrition, education, and the practical application of acquired knowledge. His educational system also includes the ZOF (Zone of Optimal Functioning) learning application, where students turn theory into practical work with meal plans.

In 2007, he launched the first intake of a six-month course focused on the education of nutrition advisors. Over time, this course became the foundation for the further development of the educational system and a range of specialised courses.