Effects
The feminizing effects of estrogen and the masculinizing effects of testosterone may appear after the first couple of doses, though it may be several years before a person is satisfactorily transitioned.


Male to Female Changes
Males transitioning to females (MTF) experience the following effects of estrogen:

Breast development (full development takes several years)
Loss of ejaculation
Loss of erection
Shrinkage of testicles
Sterility
Temporary changes, which are reversible after HT is stopped, include the following:

Decrease in acne
Decrease in facial and body hair
Decrease in muscle mass and strength
Skin becomes softer and smoother
Slowing of balding pattern
Redistribution of fat from abdominal area to hips and buttocks
Risks associated with HT include the following:

Benign pituitary tumors
Gallbladder disease
Hypertension (high blood pressure)
Hypothyroidism
Liver disease
Migraine headache
Tendency for blood to clot, causing related conditions:
Aneurysm
Deep vein thrombosis (DVT)
Pulmonary embolism (can be fatal)
Weight gain
Worsening of depression (if present); increased sensitivity to

i found this information on another website, and if there's anyone who's been on mtf hrt for a long time. did all of the changes happen? or did any risks happen? i'm supposed to get a doctor for hrt sometime soon, and i want to make sure it's safe, especially if i'm not 18 yet.

I only been on hrt for 8 months and 33 years old here is my experience.


Male to Female Changes
Males transitioning to females (MTF) experience the following effects of estrogen:
Breast development (full development takes several years) Some grow 37" inches where the bra band goes 42" over the beast so that is not much, I think most noticeable was the nipple grow.
Loss of ejaculation Not completely
Loss of erection Not completely
Shrinkage of testicles yes 1/3 of their original size
Sterility Don't Know

Temporary changes, which are reversible after HT is stopped, include the following:
Decrease in acne Yes
Decrease in facial and body hair Some but still need laser then electro.
Decrease in muscle mass and strength Yes
Skin becomes softer and smoother Yes this was the most noticeable for me.
Slowing of balding pattern Only after taking avodart
Redistribution of fat from abdominal area to hips and buttocks I'm not sure about this one because of weight loss


Risks associated with HT include the following:
Benign pituitary tumors ? This is the scariest one for me I seen a film about a girl I think in SF who couldn't use estrogen because of this
Gallbladder disease Yes hrt + weight loss bothered it a little
Hypertension (high blood pressure) I had high high blood pressure I don't now
Hypothyroidism getting checked for it in August
Liver disease ?
Migraine headache I had them before they might have increase slightly but I have been under a lot of stress
Tendency for blood to clot, causing related conditions:
Aneurysm ?
Deep vein thrombosis (DVT) ?
Pulmonary embolism (can be fatal) ?
Weight gain I went on a diet at the same time as I started hrt lost 110 pounds
Worsening of depression  Nope, but  at first I had some panic attacks and Euphoria this actually may have started before HRT



These all are risks and benefits from hrt I think there is more. Your doctor or pharmacist will tell the risks of medication just make sure to ask.  ? means not yet thankfully.

Anna

Males transitioning to females (MTF) experience the following effects of estrogen:

Breast development (full development takes several years)  Slow.  It takes just as long as a genetic female.
Loss of ejaculation  - True
Loss of erection  -  True
Shrinkage of testicles  -  True
Sterility  - True

Temporary changes, which are reversible after HT is stopped, include the following:

Decrease in acne  - True
Decrease in facial and body hair  -  True.  Plus, it gets finer.
Decrease in muscle mass and strength   -  Some.
Skin becomes softer and smoother   -  True
Slowing of balding pattern   -  True  Yea!
Redistribution of fat from abdominal area to hips and buttocks  Slow, just like in a genetic female.  Amount depends on your age.

Risks associated with HT include the following:

Benign pituitary tumors  -  ?
Gallbladder disease  -  ?
Hypertension (high blood pressure)  -  Risk
Hypothyroidism  -  ?
Liver disease  -  True.  Your liver is being damaged by HRT.  Too high a dosage increases the risk.
Migraine headache  -  ?

Tendency for blood to clot, causing related conditions:  All are true and a siginificant risk. 
                                                You forgot phlebitis which can lead each listed below.
Aneurysm
Deep vein thrombosis (DVT)
Pulmonary embolism (can be fatal)
Weight gain

Worsening of depression (if present); increased sensitivity to.  -  ?
I have found that I can go from smiles to tears in 1.07 seconds since I started HRT.  This was not true before starting.