abuse in coffee consumption may cause increase in blood pressure, stomach aches and problems in the nervous system, so it is galore ENDA consume maximum two cups of this substance a day, said a specialist today. In a statement, Jose Angel Hernandez Solano, specialist of the Instituto Mexicano del Seguro Social (IMSS), said that although coffee can maintain alertness and cognitive function at high levels produced significant effects in the nervous system as insomnia. He explained that its active ingredient is caffeine, which acts on the brain by blocking a neurotransmitter called adenosine, thus increasing other substances such as dopamine or the norepinefirna, that would accelerate the activity, alertness and function cognitive in general. It also contains antioxidants, vitamins and minerals and therefore is one of the highest consumption in the world drinks. In addition, since it is a product of vegetable origin presents components similar to those found in fruits and vegetables. However, abuse in coffee consumption can raise blood pressure, increase the risk of suffering hallucinations, irritability, anxiety and their diuretic effect, cause dehydration; It is also addictive. Another adverse aspect is that it stained the teeth in a yellow little nice and acids generated may cause stomach aches. Hernández Solano pointed out that coffee consumption in children, or people with sleep disorders or patients with ulcers, colitis, reflux or hernia hiatal is not recommended. Most importantly, he insisted, is not to exceed the limit of two cups daily. In addition, he said there is a watered down version that knows equal but clarifies slightly its effects and is a good choice for those who react intensely to its components. A further recommendation is to avoid the consumption in fasting and if possible add milk or some other component to avoid stomach upset.