The many healthy ingredients in dates can support the metabolism, the nervous system and the heart muscles and lower LDL cholesterol. According to various studies, B vitamins can have a calming effect on people suffering from nervousness and general restlessness. B vitamins are also known to lower blood pressure. Dates contain B3 and B5 vitamins. So, this fruit can also be enjoyed in the evening without any problems. This is also down to the fact that dates contain amino acids. For example, the amino acid tryptophan is a precursor to serotonin. Tryptophan can be converted to melatonin. This hormone binds to nerve cells in the brain and can therefore also have a calming effect and relieve nervousness and insomnia.