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Is a BMI of 17-18 Considered Healthy?

2/10/2026, 7:00:40 PMMale25-34

For quite some time, this issue has been weighing heavily on my mind. Although I’m twenty now, I’ve struggled with concerns about my height since I was around seventeen. Throughout my childhood, I was always on the thinner side. I experienced a growth spurt and reached 5'9" by the age of sixteen, despite my parents being 5'6" and 5'0". However, that growth suddenly halted after that point. As a teenager, my diet consisted of primarily vegetarian meals with an ample supply of vegetables, but I rarely consumed milk because I disliked it. This has led me to wonder whether my dietary choices negatively impacted my growth. To complicate matters further, I never developed much facial or body hair during those years, making me feel as though I hadn't reached full maturity, yet my height still ceased to advance. When I hear about others who grew several inches after turning sixteen, it leads me into a spiral of overthinking. I can’t help but feel a nagging suspicion that I may have hindered my own growth in some way.

Weight ManagementNutritionLifestyle Changes

Answers (1)

Cony

2/10/2026, 7:01:01 PM

OpenHealth AI

A BMI (Body Mass Index) in the range of 17-18 is considered underweight, which could pose health risks over time. It's understandable to feel concerned about your growth and body image, especially after reflecting on your dietary habits and physical development. Let's explore this further to help you understand and take actionable steps towards improving your health.

Understanding BMI and Growth

  • BMI Calculation: BMI is calculated using your weight and height. For adults, a BMI below 18.5 is classified as underweight. This could indicate a need for weight gain, particularly if it is impacting your energy levels or overall wellbeing.
  • Growth Factors: Growth can be influenced by genetics, nutrition, and overall health. While some individuals may continue to grow taller after age 16, many stop growing due to genetic factors. Nutritional intake during adolescence is crucial for supporting healthy growth, though it's important to note that it's not solely responsible for height.

Addressing Your Concerns

It sounds like you're seeking reassurance and guidance on how to support your health. Here are some steps you might consider:

  1. Evaluate Your Diet:

    • Focus on a balanced diet that includes a variety of foods to ensure you're getting the essential nutrients. Include sources of protein (like beans, lentils, tofu, nuts), vitamins, and minerals.
    • Consider incorporating dairy alternatives fortified with calcium and vitamin D like almond milk, soy milk, or leafy greens.
  2. Monitor Your Weight:

    • If you feel comfortable, track your weight and BMI regularly to see if there are changes over time. Aim to reach a healthier range (18.5-24.9) through gradual weight gain if necessary.
  3. Physical Activity:

    • Engage in regular, moderate exercise to build muscle mass and improve your overall health. Strength training can be particularly beneficial.
    • Activities like yoga or pilates can also promote body awareness and confidence.
  4. Address Emotional Wellbeing:

    • It’s important to address any underlying feelings you may have regarding self-image. Consider speaking with a friend, family member, or counselor about your thoughts, as this can help in processing your feelings about growth and body image.
  5. Stay Informed:

    • Read up on nutrition and growth to enhance your understanding, but be cautious to avoid misinformation that fuels anxiety. Official health sources or registered dietitians can provide reliable guidance.

Moving Forward

Focus on gradual, sustainable changes in your diet and lifestyle rather than looking for quick fixes. This process is individual, and it's important to be patient and kind to yourself as you navigate these changes. If you experience any concerning symptoms, such as significant weight loss or fatigue, consider seeking professional advice.

Remember, you’re not alone in your feelings, and many factors impact health and growth. Taking proactive steps can help you feel empowered in managing your health journey.

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