Nutrition Gallery

Balanced diet

Balanced diet, computer artwork. A balanced diet shown as segments of a pie. The pie shows what proportion of the diet should be made up of each of the major food groups. Carbohydrates (top left) should make up the biggest part of a healthy diet, followed by fruit and vegetables (top right), proteins (bottom left) and dairy products (bottom right). Fats and sugars (bottom centre) should make up the smallest constituent of a healthy diet

© DAVID NICHOLLS/SCIENCE PHOTO LIBRARY

Vitamin B12, molecular model

Vitamin B12, molecular model. Vitamin B12 (cyanocobalamin) is an essential nutrient that humans are unable to produce and need to obtain from their diet. It is found in meat, fish poultry and dairy products. Vitamin B12 is needed for producing red blood cells and for a healthy nervous system. Deficiency can lead to pernicious anaemia, with symptoms including tiredness, dizziness and a reduced sense of taste. Vitamin B12's chemical formula is C63H88CoN14O14P. Atoms are represented as spheres and are colour-coded: carbon (C, grey), hydrogen (H, turquoise), cobalt (Co, pink), nitrogen (N, blue), oxygen (O, red) and phosphorus (P, green)

© LAGUNA DESIGN/SCIENCE PHOTO LIBRARY

Vegan oat and chickpeas hamburger is pictured at Tasty Beet Juicy

A vegan oat and chickpeas hamburger is pictured at Tasty Beet Juicy and Healthy Food restaurant in Ciudad Juarez, Mexico January 29, 2018. Picture taken January 29, 2018. REUTERS/Jose Luis Gonzalez

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