need help with spanish content

Hello. I’ve been learning Spanish for quite some time and I’d like to start monetizing this language through YouTube. I’m a doctor, and my goal is to reach Spanish-speaking viewers over the age of 50, especially in Mexico and South America, to help guide and educate them on health-related topics. I would really appreciate some guidance on the main health problems seniors in these regions commonly face, and what type of health content I should focus on to genuinely help solve their everyday health concern