Healthful Living

activity adult alcohol amount animals Appleton-Century Company approximately average become blood body butter caffeine calories cancer carbohydrates cause cent chronic common cold Company condition constipation contain cooked cream cure death rate deficiency dental caries diet dietary digestion diphtheria disease effect eggs emotional energy exercise factors fatigue frequently germs glands goiter hay fever heart heat Hence Hygiene illness immunity important increase indigestion individual infection influenza internal secretion intestinal iodine irritation juice light live measles meat mental milk minerals muscles nasal nervous normal nutritional occur patient period persons physical physician pneumonia pollens practice prevention produce proteins reduced respiratory scarlet fever sexual skin sleep smallpox smoking stomach sugar susceptible symptoms tbsp teeth temperature tetanus thyroid tion tissue tobacco tonsillectomy tonsils tract treatment tuberculosis ultraviolet underweight usually vaccination vegetables viosterol vitamin vitamin D weight