To become an Air Force Dietitian in India (age 27):

• Education: Complete a bachelor's in home science with food & nutrition or MBBS, followed by a recognized postgraduate diploma in dietetics/nutrition.
• License: Register with the Indian Dietetic Association.
• Age limit: Check the latest notification, it might be 40 years for Short Service Commission.
• Hearing: Contact the Air Force Medical Branch to clarify their policy regarding your specific hearing impairment.

To become a NASA Space Nutritionist:

• Education: Pursue a Ph.D. in nutrition or related field, research experience is crucial.
• Experience: Prior research in space nutrition, human physiology, or similar is highly desirable.
• Skills: Strong analytical, research, communication, teamwork, and independent work ethic are essential.
• Hearing: Contact NASA's Equal Opportunity Office for details on accommodations and specific requirements for the role.

Remember, these are general guidelines, so always check official sources for the latest information. Don't be discouraged by your hearing impairment; research, open communication, and determination can help you achieve your goals!