An estimated 20 per cent of Canadians (and 22% of Americans) have been tattooed, but what are the long-term effects? Scientists analyzed tattoo pigment samples from four corpses and two control subjects, and learned where tiny pigment samples ended up. When the pigment particles are small enough to go through the lung, they can end up in the brain as well.

https://www.cbc.ca/news/health/tattoo-health-1.4288837

I had my third epidural in my lumber spine and within a few weeks big chunks of hair started falling out, 1 patch of hair about size of a plum. Some days it’s fine then others clumps still fall out. I now have gone totally bald and it’s really affecting my depression and anxiety. I was wondering if anyone knows if it will grow back and how long as it’s near front so can’t hide it.

You need to see a doctor about your hair loss to find out if it is caused by medical conditions such as a disease entity or if it is purely genetic hair loss which can be accelerated by stress. Once you know, if the diagnosis is genetic hair loss and assuming that you are male, the drug Finasteride can maybe stop it. If it is from another disease, then you need a diagnosis.  People who have conditions like you and who have stress from your primary problem (in your case your spinal problem) can cause the genes for hair loss to kick in and accelerate the hair loss that you may get in the years to come. Without pictures, it is impossible to know what you mean that you have gone totally bald so either send photos or see a doctor to make a diagnosis.

It is generally publicized that it is normal that a person can lose 100 hair a day on average.  Other say that 100 hair a day is a lot and a normal loss is 50 hair/day or even less (20-30 hair/day) and that 100 hair/day is a sign of balding.  Please can you advise if there were any trial to check how many hair on average a person really lose a day or if the 100 hair a day is based only on assumptions regarding number of hair in scalp and 10% in resting phase. Is this assumption of 100 hair/day credible and sure science.  All the best and thank you for everything

Daily hair loss is part of the hair growth cycle.  Hair essentially goes through two cycles. The Anagen Phase is the growth part of the cycle and it averages about three years. However, it often decreases with age and could be two or three years or even less the older you get. The second phase is called the Telogen Phase and it is the “rest” part of the cycle. The hair falls out while the hair root regenerates into a new hair that will regrow after about six months.

In a typical Caucasian who has 100,000 hairs on the head, assuming that the hair growth cycle lasts three years, divide number of hairs on the head by 1095 days and you come up with 91 hairs lost per day. In Asians with 80,000 hairs on their head, the number of hairs lost per day equals 80 percent of Caucasian numbers or 73 hairs per day, again assuming a 3 year growth cycle. A three year hair cycle, which may not be the case in older people, may be reduced, say two years instead of three years. Then the Caucasian hair loss per day would be closer to 150 hairs per day and the Asian hair loss per day would be about 120 hairs per day.

The real question is what will be your final hair loss pattern and will you have enough hair to follow the loss to its normal completion?  Men under 25 are not good candidates for hair transplants.  I consider doing a hair transplant on a 21 year-old the equivalent of malpractice on the part of the doctor. I would recommend that you seek other alternatives while your final balding pattern is established.  Keep yearly contact with a caring doctor who will build a Master Plan for you, measuring your hair loss and possibly placing you on a drug like Finasteride which is very effective at stopping and often reversing hair loss in young men of your age. Just imagine, doing a transplant now, then losing more hair and doing another transplant in a year, then losing more hair and doing another transplant again in a year so by the time you are 24, you could have had 3 transplants and may continue to bald. The cost in using up your hair bank and your money bank are both the types of discussions you and your doctor must have when building a Master Plan for your future hair loss

Article:  https://www.degruyter.com/view/j/hmbci.2017.30.issue-3/hmbci-2017-0015/hmbci-2017-0015.xml

Conclusion of this study

I just had an FUE and want to know if I can use Minoxidil and when. Incidentally, is it true that there is benefit on using Minoxidil on the implanted hairs?

The use of Minoxidil on the recipient growth can be started once the crusts are all off. I ran a study on half of the head on a few dozen patients where I put Minoxidil on half of the head and not the other half. There was no value seen on the Minoxidil side.

These grafts reflect the distribution of the 1,500 grafts you had done. If the surgeon did more grafts, he could have placed them closer together.