Please quit coffee pregnant 
 
 
China environmental science research institute of environmental pollution and health innovation base Fang Xiujie Zhang Jinliang 
 
 
Source: health 

        Drink coffee benefits a lot, also known as. Caffeine is a central nervous system stimulant, moderate doses of caffeine can reduce muscle fatigue, temporarily off drowsiness and restore energy. Caffeine can promote the secretion of digestive juice, whitening skin, enhance people's awareness, bring good mood, even a lot of health care function. However, long-term or large doses of caffeine may also cause certain harm to human body. As is known to all, caffeine can make people addiction, large doses of caffeine can cause poisoning. A drinking 2 ~ 3 cups of coffee can cause excessive excited central nervous system, including irritable, nervous, excited, insomnia, blush, the symptom such as urine increased, gastrointestinal disorders, or agitation. In addition, because caffeine is a diuretic, high-dose drinking can lead to dehydration. Long-term excessive intake of caffeine may also cause a series of mental disorders, very few people after an overdose of caffeine can be for the heart stops beating. 
 
        Coffee can resulting in the loss of calcium 
 
        Among all the harm that drinking coffee, resulting in the loss of bone calcium special attention. Studies have shown that caffeine can combine with the body of ca2, promote urinary calcium loss, reduce calcium absorption, break the balance of calcium in the body, the decrease of ca2 inevitably cause the decomposition of combined with calcium, severe cases can lead to osteoporosis. Caffeine also breaks the vitamin D receptor expression in artificial bone cells, and vitamin D can promote the absorption of phosphorus and calcium. So long a large number of drinking coffee can cause the body calcium, especially calcium demand of pregnant women during pregnancy. 
 
        Calcium, iron deficiency can cause higher blood lead levels 
 
        Nutrient elements such as calcium, iron to lack in pregnant women may cause higher blood lead levels, increase fetal lead exposure level, thus affecting the development of the baby's nervous. Under normal circumstances, lead will be stored in the bones in the human body, and can be released back into the blood. When the elements such as calcium and iron in the human body lack, lead in bones may be a lot into the bloodstream. Due to the aforementioned reasons, bone is lead storage organs, can lead long existing in bone in the human body, in the human body the lack nutrition elements such as calcium and iron, lead within the bone activated and released into the blood, cause the increase of peripheral blood lead. 
 
        Women during pregnancy are prone to elements such as calcium, iron to lack phenomenon, without contact with or without lead intake of lead pollution sources, the blood lead level will rise, and thus increase fetal lead exposure levels. Studies confirm that lead in maternal blood can through the placental barrier into the foetus, become the main source of newborn and infant blood lead levels. Lead has strong neurotoxicity, when low blood lead level can affect the development of the baby's physical and nervous system. Studies have shown that high levels of lead exposure during pregnancy can block intrauterine fetal neural development. 
 
        Caffeine can enter the foetus 
 
        Caffeine can through the placental barrier into the foetus. Pregnant women too much caffeine (one-time intake of more than 300 mg, equivalent to the amount of 2 ~ 3 cups of coffee), can lead to miscarriage, premature delivery, fetal intrauterine retarded, low birth weight and fetal malformation, etc. Caffeine is likely to affect baby memory ability in adulthood. In addition, there is research shows that women of childbearing age consuming too much caffeine can lower the pregnancy rate. 
 
        Caffeine not only exists in coffee, tea, caffeinated energy drinks (e.g., 5 hours ability, red bull, etc.), chocolate, chewing gum, and even is also higher in the nasal sprays. For the baby's health, pregnant women should stay away from caffeine. At the same time, pregnancy and lactation women should ensure the intake of calcium, iron and other elements.
 
 
 
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