Characteristics may further be described as being interspecific, intraspecific, and conspecific. Interspecific Interspecificity (literally between/among species), or being interspecific, describes issues between individuals of separate species.
Coronary heart disease (CAD) is the most common of many types of heart disease, not only in men but also in women. It is caused by atherosclerosis, or hardening of the arteries, which occurs when plaque from cholesterol and other substances accumulate in the arteries.
Palpitations can occur for a variety of reasons unrelated to heart disease. These include: 1  Overexertion. 2  Stress. 3  Caffeine, alcohol, tobacco, or diet pills. 4  Overactive thyroid. 5  Hormone changes associated with menstruation, pregnancy, or menopause. 6  Low blood pressure. 7  Heart disease or abnormal heart valves.