Hello,
Hearburn is indicative of
acid reflux,
indigestion, liver dysfunction or GERD.
Weight loss may be due to overactive thyroid, burning too much energy or calotie may cause weight loss.
Sometimes, weight loss can be due to certain long term illness like
diabetes, cancer, AIDS, HIV, etc. Since your son is working for long hours, he needs a break. Rest & relaxation will help him recover faster. However, he is suggested to get clinically examined by a GP. Get all blood,
Urinalysis & required imaging tests done.
He should take plenty of water & be well fed. Should avoid or cut on addictions if any. To improve loss of appetite he should take liver tonics & digestives. Take boiled food, avoid spicy, oily junk food. Avoid eating raw food & vegggies. Cut on addictions if any. Your treatment will depend on the clinical condition & pathology detected.
Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Nupur K., General & Family Physician