This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. superlative form of healthy: most healthy.

"In a commentary, Dr. Robert W. Blum, of Johns Hopkins Bloomberg School of Public Health, wrote that "although adolescence is often referred to as the healthiest stage of life, [this report] makes clear that young people are at substantial risk for"