Nutrition and Longevity Quiz

A dietary approach that involves reducing calorie intake by 30-40% while maintaining essential nutrients.

Studies have shown that calorie restriction consistently extends lifespan in various species, including mice, rats, flies, dogs, and worms.

The earlier calorie restriction is implemented in life, the greater the lifespan extension observed in mice.

A large-scale study involving rhesus monkeys showed that those on a 30% calorie restriction diet experienced lower blood pressure, body temperature, insulin resistance, and reduced incidences of cancer.

Calorie restriction for humans is estimated to result in a modest life extension of a few years. However, the potential benefits diminish with age.

Okinawan centenarians provide an example of a population with a lifestyle characterized by low caloric intake and nutrient-dense diets, contributing to longer lifespans.

Lifelong dietary habits contribute significantly to the health and longevity of individuals in old age.

The reduced ability of the body to absorb vitamin B12 from food, despite adequate intake. This is often due to age-related changes in the stomach, like atrophic gastritis, which affects the production of hydrochloric acid and pepsin, making it harder to separate B12 from protein carriers.

The reduced ability of the skin to synthesize vitamin D, which is crucial for bone health. This is often due to factors like decreased sunlight exposure from aging, institutionalization, winter, clothing, or sunscreen.

The body's ability to store vitamin A increases with age, making it more vulnerable to toxicity from excessive intake. Therefore, it is important to be mindful of the recommended upper limit.

The body's water content decreases with age, leading to a smaller safety margin for staying hydrated. It is crucial to ensure adequate fluid intake, especially with age.

A diet rich in potassium can help counteract the negative effects of high sodium intake, which is often a concern for older adults. Potassium-rich sources include fruits and vegetables, such as those found in the DASH diet plan.

A study investigating the effects of calorie restriction on healthy adults. Participants were randomly assigned to either a calorie-restricted diet (25% reduction) or an ad libitum diet, over a period of two years. The study aimed to examine the long-term effects of calorie restriction, including changes in health markers and biomarkers.

A research study exploring the impact of calorie restriction on individuals residing in Okinawa, Japan. The study aimed to investigate the potential benefits of calorie restriction in relation to age-related changes and metabolic health, comparing the Okinawan population to mainland Japanese groups.

A state of reduced metabolic rate, achieved through calorie restriction, characterized by lower energy expenditure and slowed metabolic processes. It's a physiological response to reduced calorie availability.

A reduction in body weight, often associated with calorie restriction, marked by a significant decrease in overall body mass.

An increase in lifespan, typically associated with interventions like calorie restriction, signifying an extension of life expectancy.

The duration of a healthy and active life, often influenced by interventions like calorie restriction. It encompasses the period of optimal physical and cognitive function.

A potential drawback of calorie restriction, characterized by a lack of focus and difficulty concentrating, which could impede daily activities.

A potential consequence of calorie restriction, particularly in women, characterized by an absence of menstruation, which can be associated with hormonal imbalances.

A potential limitation of calorie restriction, highlighting the difficulty in achieving high levels of reduction (30-40%) in daily calorie intake.