author Clara Delpas
Two studies reveal new virtues of chocolate: it would improve vision in high light… and “burn fat” for postmenopausal women!
It is known that cocoa, like red fruits and many foods, contains polyphenols and theobromine. the red fruit polyphenols (anthocyanins) are known to improve vision, but what about cocoa polyphenols (flavan-3-ols in particular) The first study, conducted among 17 women and 20 men aged 18 to 27, compared the effects on the sight of a chocolate drink or a red fruit drink with equivalent levels of polyphenols (175 mg) : During the 24 hours preceding each control visit (there were three in total), participants were required to abstain from eating or drinking any food or beverage high in polyphenols or caffeine.
After consuming their drink (cocoa or red fruits), they passed a vision test: they had to read letters placed four meters away from them in different lighting conditions, intense (photopic vision) or weak (mesopic vision), the researchers measuring at the same time their adaptation to darkness. Results: the photopic visual acuity of cocoa drinkers was significantly improved after ingestion of the drink, while it was much less so after that of the red fruit drink. The two regimes, on the other hand, did not affect their visual acuity in darker lighting or adaptation to darkness. For the authors, this improvement could be attributed to flavanols, but also to the theobromine contained in cocoa.
Another study, more surprising (because milk chocolate has the reputation of contributing to weight gain due to its high content of fat, sugar and calories), American researchers conducted a randomized double-blind clinical trial on 19 postmenopausal women who had to consume 100 g of milk chocolate in the morning (within an hour of waking up) , that is, in the evening (in the hour before bedtime), and this for 14 days.
Good news for them, on this diet, no one has grown fat (or lost weight). In contrast, those who ate chocolate in the morning were less hungry during the day (!), also ate less sweets (!), had lower levels of cortisol (stress hormone), as well as a higher lipid metabolism than those eating in the evening, which could help the body burn fat and reduce blood sugar levels. Far from validating the consumption of milk chocolate in general, this small-scale study aimed above all to demonstrate that the body reacts differently depending on the time at which it consumes a food!
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