Strokes have nearly doubled among younger adults in the United States, raising major concern among doctors.

Specialists say a growing share of stroke patients are in their twenties, thirties and forties.

Physicians link the shift to high stress, lack of physical activity and poor diets.

Uncontrolled high blood pressure is a primary suspect because it often goes undetected in younger people.

Type 2 diabetes, insulin resistance and high cholesterol are also appearing at younger ages, the article says.

Substance abuse, chronic stress and rising obesity add strain to the heart and blood vessels.

Ischemic strokes, caused by blocked blood flow, account for most cases, according to the piece.

Learn F.A.S.T.: face drooping, arm weakness, speech difficulty, and time to call emergency services.

Fast treatment can mean the difference between full recovery and permanent disability.

Read the full article on why strokes are rising among younger adults.