I lost my hair because of health issues.

According to Guru Granth Sahib Amrit is Har Ka Naam, which we can obtain with the help of Gurbani only.
ਅੰਮ੍ਰਿਤੁ ਹਰਿ ਕਾ ਨਾਮੁ ਹੈ ਜਿਤੁ ਪੀਤੈ ਤਿਖ ਜਾਇ ॥- 1283
The tradition is Khande Ke Pahul, which people have coined these days as Amrit. This is an admission in Guru Ghar. Our commitment to the Guru that we will follow the teachings of Guru Granth Sahib. Just by taking the admission, one cannot claim the degree. For getting any degree one has to work hard and put all sorts of efforts. Everybody claims himself to be true and follower of Guru. Unless we put ourselves to the test. How can we know the reality? Best method of testing is that we study each and every sentence of Guru Granth Sahib and ask ourselves how much we are understanding and following. Everybody claims that he is doing Seva. But rarely anyone knows that real Seva according to Guru Granth Sahib is Shabad Vichar.
ਗੁਰ ਕੀ ਸੇਵਾ ਸਬਦੁ ਵੀਚਾਰੁ ॥ ਹਉਮੈ ਮਾਰੇ ਕਰਣੀ ਸਾਰੁ ॥੭॥ – 223
The loss of hair because of medical reasons is also a natural process. Here, one is not disobeying the Hukam of Akal Purkh. Hence, there is no problem of taking Khande Ke Pahul, which is an admission in Guru Ghar. This is our commitment to the Guru that we will follow the teachings of Guru Granth Sahib.