Other lifestyle changes can also reduce your risk of hardening of the arteries: 1  Avoid fatty foods. 2  Eat well-balanced meals that are low in fat and cholesterol. 3  Include several daily servings of fruits and vegetables. 4  Adding fish to your diet at least twice a week may be helpful. 5  However, do not eat fried fish.
Commotio cordis. Commotio cordis (Latin, agitation of the heart) is an often lethal disruption of heart rhythm that occurs as a result of a blow to the area directly over the heart (the precordial region), at a critical time during the cycle of a heart beat causing cardiac arrest.
Symbiosis is a broad category, defined to include relationships that are mutualistic, parasitic, or commensal. Mutualism is only one type. A well-known example of mutualism is the relationship between ungulates (such as bovines) and bacteria within their intestines. The ungulates benefit from the cellulase produced by the bacteria, which facilitates digestion; the bacteria benefit from having a stable supply of nutrients in the host environment.