Hi.. The first thing that you need to do is to get your thyroid and blood sugar levels checked. Also try to work in morning shifts as soon as possible and follow a proper sleep and wake pattern.. For pimples you can start applying clindamycin and benzoyl peroxide containing ointments.. Use salicylic acid face wash.. Take plenty of green leafy vegetables and fruits in diet and drink plenty of water.. Do exercise om a daily basis.. Hairfall and grey hairs and commonly due to stress on mind and body. You can apply Minoxidil lotion over the scalp. Apply onion juice twice a week, take biotin supplements.. Warm coconut oil massage can be helpful.. For constipation you can take stool softeners like Docusate and incorporate plenty of fibers in diet.. Regular walk or exercise can further help in reducing weight and eradicating constipation.. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Honey Arora, Dentist