Health and nutrition are closely linked in a malnutrition-infection cycle in which diseases contribute to malnutrition, and malnutrition makes an individual more susceptible to disease. Malnutrition is the result of inadequate dietary intake, disease or both. Disease contributes through loss of appetite, malabsorption of nutrients, loss of nutrients through diarrhoea or vomiting. If the body's metabolism is altered the greater the risk is of malnutrition.
âThey studied giant redwoods, the tallest trees on earth in Humboldt County California to reach these conclusions. They hypothesized and verified experimentally that as trees reached the height of 425 they could pump less and less water and nutrients up to new growth at that level. No current tree in the world has reached this height.
It is possible that the tallest tree of the world up to the end of the 19th century was coast Douglas fir - in 1897 there was cut reportedly 142 m tall fir in Loup's Ranch, Washington state. Nowadays the tallest known coast Douglas fir is 99.8 m tall, the age of this tree is approximately 450 - 500 years.