Hi USA, good to see you again. The answer to your question, (observation?) is life just goes on. How a persons physical body changes from vegetarian to meat eater is another point. When my eldest daughter was 17 I remember her coming home from college announcing she was now vegetarian. The impact was stronger on my wife and me as we cooked her meals. Twenty three yrs ago there was not the information, knowledge or variety of vegetarian foods available that there is now. She remained slim but I believe suffered physically from some nutrient deficiencies as a result of family ignorance on the subject matter. After aprox 5yrs she suddenly changed again to a meat eater. The impact was obvious as the nutrients available in meat and animal based foods impacted upon her in a positive way. She just got on with her life, remaining slim and apparently healthy. The human body has amazing capacity to adjust and cope with dietary changes.
Good luck, nice to see you back.