As of 2021, an estimated 811 million people worldwide were affected by hunger, according to the United Nations.

Sub-Saharan Africa has the highest prevalence of hunger, with over 250 million people affected.

Poverty is the leading cause of hunger, as it limits people's access to food and resources.

Conflict can contribute to hunger in a number of ways, including disrupting food production and distribution, forcing people to flee their homes and abandon their crops, and increasing food prices.

Climate change can affect hunger in a number of ways, including leading to more extreme weather events, causing sea levels to rise, and changing rainfall patterns.

Hunger can have a number of negative consequences, including increased risk of disease, stunted growth and development, and reduced cognitive function.

There are a number of solutions to hunger, including investing in agricultural research and development, providing food aid to vulnerable populations, and promoting sustainable agriculture.

Malnutrition is a condition that results from a lack of essential nutrients, such as proteins, carbohydrates, fats, vitamins, and minerals.

There are three main types of malnutrition: undernutrition, overnutrition, and hidden hunger.

Undernutrition is a condition that results from a lack of essential nutrients, such as proteins, carbohydrates, fats, vitamins, and minerals.

Overnutrition is a condition that results from an excess of essential nutrients, such as proteins, carbohydrates, fats, vitamins, and minerals.

Hidden hunger is a condition that results from an imbalance of essential nutrients, such as proteins, carbohydrates, fats, vitamins, and minerals.

Malnutrition can have a number of negative consequences, including increased risk of disease, stunted growth and development, and reduced cognitive function.

There are a number of solutions to malnutrition, including improving access to nutritious food, promoting breastfeeding, and educating people about nutrition.