What is the most life threatening thing in the high mountains: high altitude, wild animals, steepness, difficult terrain or weather? Based on my experience of crossing 300+ passes in the Himalayas it's very clear: the weather is your greatest adversary at higher altitudes. It's pleasant to go for a monsoon hike in the Western Ghats of South India and get drenched but it's life threatening to get into wet / cold weather in the high mountains: rain, snow, wind, cold, white out. A deadly combination.

NEVER go out in the high mountains without checking the weather forecast. A human being is extremely vulnerable to the weather elements. At higher altitudes weather tends to get more extreme and you are more exposed.

https://indianexpress.com/article/india/uttarakhand-bodies-of-7-trekkers-found-12-dead-three-still-missing-7587419/