Lowered testosterone. A predisposition for taste carbs. A lack of social interaction...erbivore men (草食(系)男子 Sōshoku(-kei) danshi?) is a social phenomenon in Japan of men who shun marriage or gaining a girlfriend.[1] They are characteristically described as frugal, and interested in personal grooming.[2] Under this categorization scheme, men and women are either herbivore type (草食系 sōshoku-kei?) or carnivore type (肉食系 nikushoku-kei?). As of September 2010, 36% of Japanese men between the ages of 16 and 19 perceived themselves in this way.[3] Additionally, two surveys of single men in their 20s and 30s found that 61% and 70%, respectively, considered themselves grass-eating men.[4] This phenomenon is viewed by the Japanese government as a leading cause in the nation's declining birth rate, prompting the government to provide incentives for couples that have children, including payouts and free health care.[5]
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