Biological Scientist Training and Qualifications. Most biological scientists need a Ph.D. in biology or one of its subfields to work in independent research or development positions. Other positions are available to those with a master's or bachelor's degree in the field.Education and training.A Ph.D. is usually necessary for independent research, particularly in academia, as well as for advancement to administrative positions.ther positions are available to those with a master's or bachelor's degree in the field. Education and training. A Ph.D. is usually necessary for independent research, particularly in academia, as well as for advancement to administrative positions.
Not all illnesses are physical. According to American Family Physician, depression is a major cause of weight loss among elderly people, and when Alzheimer's disease is accompanied by weight loss of 5 percent or more, it's generally a precursor to death. Personality disorders such as anorexia and bulimia rob pounds, especially in young people.
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