冬天气候寒冷，适当多吃些海带，不仅能使身体更强壮，还可以起到很好的御寒作用。营养专家称人怕冷与机体摄人某些矿物质较少有关。如钙在人体内含量的多少，可直接影响心肌、血管及肌肉的伸缩性和兴奋性；血液中缺铁是导致缺铁性贫血的重要原因，常表现为产热量少、体温低等。因此，补充富含钙和铁的食物可提高机体的御寒能力。科学家们 Winter cold weather, appropriate to eat more kelp, not only make the body stronger, but also can play a good role in the warmth. Nutrition experts say people are afraid of cold and body intake of some minerals less relevant. Such as the amount of calcium in the human body how much, can directly affect the myocardium, blood vessels and muscle scalability and excitability; iron deficiency is an important cause of iron deficiency anemia, often manifested as less calorie, low body temperature. Therefore, the supplement of calcium and iron-rich foods can improve the body’s ability to keep warm. scientists