Middle age in the context of "Atherosclerosis"

Sexuality in older age concerns the sexual drive, sexual activity, interests, orientation, intimacy, self-esteem, behaviors, and overall sexuality of people in middle age and old age, and the social perceptions concerning sexuality in older age. Older people engage in a variety of sexual acts from time to time for a variety of reasons. Desire for intimacy does not disappear with age, yet there are many restrictions placed on the elderly preventing sexual expressions and discouraging the fulfillment of sexual needs. Sexuality in older age is often considered a taboo, yet it is considered to be quite a healthy practice; however, this stigma can affect how older individuals experience their sexuality. While the human body has some limits on the maximum age for reproduction, sexual activity can be performed or experienced well into the later years of life.

In medicine and the social sciences, a young adult is generally a person in the years following adolescence, sometimes with some overlap. Definitions and opinions on what qualifies as a young adult vary, with works such as Erik Erikson's stages of human development significantly influencing the definition of the term; generally, the term is often used to refer to adults in approximately the age range of 18 to 45 years. Some inclusive definitions extend the range into the early to mid 40s, while others end earlier.

The United States Census Bureau, for instance, defines young adults as those between the ages of 18 and 34. Over 65 million Americans born approximately from 1990 to 2006, would likely fall under this category. The young adult stage in human development precedes middle adulthood.

Emphysema is a condition of the lung marked by abnormal enlargement of the alveoli with loss of pulmonary elasticity. Most commonly, emphysema refers to the permanent enlargement of air spaces (alveoli) in the lungs, and is also known as pulmonary emphysema.

Emphysema is a lower respiratory tract disease, characterised by enlarged air-filled spaces in the lungs, that can vary in size and may be very large. The spaces are caused by the breakdown of the walls of the alveoli, which replace the spongy lung tissue. This reduces the total alveolar surface available for gas exchange leading to a reduction in oxygen supply for the blood. Emphysema usually affects the middle aged or older population because it takes time to develop with the effects of tobacco smoking and other risk factors. Alpha-1 antitrypsin deficiency is a genetic risk factor that may lead to the condition presenting earlier.

A midlife crisis is a transition of identity and self-confidence that can occur in middle-aged individuals, typically 45 to 65 years old. The phenomenon is described as a psychological crisis brought about by events that highlight a person's growing age, inevitable mortality, and possible lack of accomplishments in life. This may produce feelings of intense depression, remorse, and high levels of anxiety; or the desire to achieve youthfulness, make drastic changes to their current lifestyle, or change past decisions and events.