Young Hearts at Risk: How Nicotine and Poor Habits Start Damage at 17

Heart health among young people is declining earlier than many realise. Research shows that deterioration often begins around age 17, yet the warning signs frequently go unnoticed. A recent study highlights how lifestyle habits during this critical period can set the stage for long-term cardiovascular risks.

Between 2002 and 2018, nicotine use among young adults nearly doubled. This trend is particularly concerning because nicotine damages blood vessels and speeds up the formation of fatty plaques in the arteries—a condition known as atherosclerosis. The study, led by Jessica L. Jorissen from the University of South Carolina, found that the years between 17 and 25 are crucial for both heart and liver health.

By the end of high school, many teenagers already show early risk factors for heart disease. Poor diet, lack of exercise, frequent fast food consumption, alcohol, and nicotine use all contribute to worsening health. Key indicators—such as blood pressure, sleep quality, and physical activity levels—also decline during this time.

The research emphasised that increased nicotine use, especially among 18- to 23-year-olds, raises the risk of vascular damage. This age group faces a higher likelihood of developing atherosclerosis, a condition where plaque builds up in the arteries, restricting blood flow and increasing the chances of future heart problems.

The findings suggest that early intervention is essential to prevent long-term damage. Young people who adopt healthier habits—such as quitting nicotine, eating better, and staying active—could significantly reduce their risk of heart disease later in life. Without changes, the deterioration in heart health during these critical years may lead to lasting consequences.