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.
Medicines that can cause hair loss include blood thinners (also called anticoagulants), medicines used for gout, high blood pressure or heart problems, vitamin A (if too much is taken), birth control pills and antidepressants.Certain infections can cause hair loss.or example, about 3 or 4 months after an illness or a major surgery, you may suddenly lose a large amount of hair. This hair loss is related to the stress of the illness and is temporary. Hormonal problems may cause hair loss.