Food labeling is primarily intended to provide consumers with information about the nutritional content of the food they are purchasing, helping them make informed choices about their diet.

The Food Safety and Standards Authority of India (FSSAI) is the apex food regulator in India, responsible for regulating food labeling and ensuring the safety and quality of food products.

According to FSSAI regulations, food labels in India must include the name of the food, a complete list of ingredients, nutritional information, date of manufacture, and expiry date.

The Daily Reference Intake (DRI) is a set of nutrient recommendations that provide guidance on the daily intake of nutrients needed to maintain good health and prevent chronic diseases.

The 'traffic light' labeling system uses color-coded labels (green, amber, and red) to provide a quick and easy way for consumers to assess the nutritional value of food. It helps them identify foods high in saturated fat, sugar, and salt, and encourages them to make healthier food choices.

The 'health star rating' system is a front-of-pack labeling system that rates the overall nutritional value of food on a scale of 0.5 to 5 stars. It helps consumers identify healthier food options, encourages food manufacturers to improve the nutritional content of their products, and promotes healthier eating habits.

According to the World Health Organization (WHO), the recommended daily intake of added sugar for adults is 6 teaspoons (25 grams) for women and 9 teaspoons (36 grams) for men.

Hemoglobin is a protein found in red blood cells that carries oxygen from the lungs to the rest of the body and transports carbon dioxide away from the body.

Carbohydrates are the body's primary source of energy. They are broken down into glucose, which is then used by cells for energy production.

Vitamin K is essential for blood clotting and wound healing. It helps in the formation of proteins that are involved in these processes.

The recommended daily intake of fruits and vegetables for adults is 5-6 servings, with one serving being approximately 1 cup of raw vegetables or fruits, or 1/2 cup of dried fruits or 100% fruit juice.

Calcium is essential for maintaining healthy bones and teeth. It helps in the formation and mineralization of bones, and also plays a role in muscle contraction and nerve transmission.

Proteins are essential for building and repairing tissues, including muscles, bones, skin, and organs. They also play a role in enzyme production, hormone regulation, and immune function.

Vitamin D is essential for the absorption of calcium from the intestines. It also plays a role in regulating calcium levels in the blood and maintaining healthy bones.

The recommended daily intake of water for adults is approximately 2 liters (8 cups) per day. This amount may vary depending on factors such as activity level, climate, and overall health.