Scientists from Perm Polytechnic University reported that dark chocolate rich in cocoa supports cardiovascular health, boosts metabolism, and helps improve cognitive functions.
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According to Professor Larisa Volkova, these health benefits are primarily attributed to flavanols, polyphenols, and theobromine. These compounds reach their highest concentrations in dark chocolate with a cocoa content of at least 70-75%.
She explained that the active compounds in cocoa stimulate the body to produce nitric oxide, which helps relax and dilate arteries. This improves blood flow, supports microcirculation, and limits the impact of free radicals on cells. These compounds also help maintain blood vessel elasticity for longer. According to the researchers, plant pigments in chocolate reduce oxidative stress and inflammatory processes associated with damage to blood vessel walls.
She added that dark chocolate may also be beneficial for the nervous system, as its components support brain nourishment and enhance communication between neurons. Additionally, magnesium and tryptophan help relieve anxiety, improve sleep quality, and stabilize mood. The polyphenols in cocoa also influence gut bacteria and metabolic processes; consuming dark chocolate in moderation may increase insulin sensitivity and reduce the risk of metabolic disorders.
For his part, Dr. Valery Litvinov, senior researcher in the university's Department of Chemistry and Biotechnology, pointed out that the active substances in chocolate improve the delivery of oxygen and nutrients to neurons, helping to maintain memory, attention, and reaction speed.
The scientists emphasized that dark chocolate is not a medicine and does not replace a healthy lifestyle. They noted that the optimal daily amount ranges between 20 and 30 grams of dark chocolate containing at least 75% cocoa, taking into account each person's health status and any individual contraindications.
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