How can I lose weight safely if I am obese and often feel unwell after exercising?

Hi, as suggested by Dr Gan below there are many reasons for your symptoms, but the likely cause in your situation is either related to your recent change in diet (drastic drop in calories even if intentional) and/or the onset of menstruation (if heavy blood loss) Occasionally, there are uncommon types of "dizziness" which can be caused by posture as your internal "thermostat" for blood pressure maybe a bit more sensitive . This causes postural hypotension (i.

Dull ache at the side of the neck is pretty unspecific, but there may be several causes for the ache/ pain. Commonly, it could be due to wear and tear of the neck/ cervical spine, and this is called cervical spondylosis. As your dad is persistently symptomatic, he would need to see an orthopaedic surgeon. A complete history and physical examination would have to be done, and often times further radiological investigations (X-rays, MRI) would have to be done to confirm the diagnosis. The problem can then be treated accordingly, and is usually done via medication or physiotherapy.