Calorie restriction (CR), or caloric restriction, or energy restriction, is a dietary regimen that reduces calorie intake without incurring malnutrition or a reduction in essential nutrients.
Fasting is a willing abstinence or reduction from some or all food, drink, or both, for a period of time. An absolute fast (dry fasting) is normally defined as abstinence from all food and liquid for a defined period, usually a period of 24 hours, or a number of days.
A famine is a widespread scarcity of food, caused by several factors including crop failure, population imbalance, or government policies. This phenomenon is usually accompanied or followed by regional malnutrition, starvation, epidemic, and increased mortality. Every inhabited continent in the world has experienced a period of famine throughout history. Some countries, particularly in sub-Saharan Africa, continue to have extreme cases of famine. It remains to be the most affected area in the world. And due to climate change, the conditions only fluctuate more and more. Predicting the seasons, as well as when to expect rain to help plant more crops seems to be a challenge. Most programmes direct their aid, and most increased efforts towards this continent.
Undernutrition a condition that results from eating a diet in which nutrients are either not enough such that the diet causes health problems. It may involve calories, protein, carbohydrates, vitamins or minerals.
The Ultimate reference of diseases and their link to the food we eat.