Why has puberty not started im 13 and 70 lbs and 4'10 an i have no pubic hair and no grownth WHY?

Puberty can start at different ages for everyone, and it's influenced by various factors, including genetics and overall health. Some individuals may begin developing later than others, which is completely normal. If you have concerns about your growth and development, it's best to consult a healthcare professional who can provide personalized guidance and support.