I have the following symptoms:

• Hair thinning on the top of my head
• Feeling more tired than usual
• Going to the toilet more often
• Feeling colder compared to my gf despite being fatter
• Dry skin

Could these be related to the change in my diet? If so I will go for a blood test, which vitamins would you recommend me to check? (I will obviously take them as supplements if needed)

Other changes in my life in the last year were finding a job and starting Zoloft.