A recent study conducted by the National Institute of Environmental Health Sciences (NIEHS) and US Department of Health and Human Services found that having a sister with breast cancer increases the risk of getting the disease. The Sister Study, which involved more than 50,000 women aged 35 to 74, studied risk factors for breast cancer, and the women’s lifestyle and environment. The research helps determine the best prevention and treatment methods for breast cancer, as well as improve outcomes and quality of life.
In general, a sister is a female with the same parents as another individual. She may be a member of a religious order or a sorority. Other names for a sister include big sister and little sister. A sibling’s wife is referred to as a sister-in-law. A sister who shares one or more parents is referred to as a half sister, step sister, or aunt. The word “sister” is derived from the Latin word sororal, which means “related to sisterly tendencies.”
Historically, the terms sister and nun are interchangeable. A Catholic nun, for example, lives a contemplative life in a semi-cloistered or enclosed monastery, and is devoted to the teachings of the church. Catholic nuns take perpetual solemn vows and abide by a code of life called evangelistic counsels. Despite their differences, they share common traits: their dedication to prayer, evangelical counsels, and contemplative life.
Having a sister has an overall positive effect on the lives of all siblings. It improves the quality of their relationships with each other and makes them happier. Having a sister has been linked to positive feelings and better relationships with siblings, according to a 2010 study. The research examined 395 families with more than one child, and the participants were asked a series of questions about their sister. One year later, the same questions were asked to these same adolescents.
Depending on the context, the meaning of the word sister can be a lot different in different languages. In English, the word comes from Old English sweoster, swustor, and swuster, and partly from Proto-Germanic *swestr. This is one of the most resilient root words in English, and is recognized in virtually every modern Indo-European language. Moreover, the French word soeur is derived directly from Latin soror, which is a rare case of borrowing the nominative case.
In a conglomerate, companies that operate under the same name have the same parent, but operate separately. They produce unrelated product lines and rarely compete with each other. Their parent company imposes separate branding strategies to differentiate their sister companies and reach distinct markets. Sister companies often have different product lines and aren’t direct competitors. This makes the relationship between the two companies more hazy than it is in the case of two separate companies. It is possible for sister companies to cooperate for a common goal and take advantage of each other’s strengths.