e-Library of Evidence for Nutrition Actions (eLENA)


People shopping in a market
WHO/Lori Sloate
Fruit and vegetables are excellent sources of vitamins and minerals

Several nutrients – including water – are essential for growth, reproduction and good health.

Macronutrients are consumed in relatively large quantities and include proteins, simple and complex carbohydrates, and fats and fatty acids.

Micronutrients – vitamins and minerals – are consumed in relatively smaller quantities, but are essential to body processes.


Fats and fatty acids


Vitamins and minerals


Contact us

eLENA team
Department of Nutrition for Health and Development (NHD)
World Health Organization
20 Avenue Appia
CH-1211 Geneva 27

E-mail: nutrition@who.int