Relevance of using calories as energy criterion of food security is explained by simplicity and accessibility for use in preliminary estimates. For example, taking the average per capita daily requirement of 2 Mcal (1000 kcal or 1,000,000 cal) per year (365 calendar days), 730 Mcal / person per year (0.730 million kcal / person per year) will be required, and for Russian population 147 million peopes (forecast of population Russia 2020) necessary minimum calorie 107 billion Mcal per year for food security
The calories vary depending on food contents and ingredients, majorly, Russian foods are known to be healthy and low in calories, because their foods are more of vegetables and high in fibre.
You are not right. Russian products are predominantly wheat products. Most of the territory of the Russian Federation is a zone of risky farming and vegetables grow poorly in open ground. Wheat products are very high in calories. More than meat products.
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