I posted the following idea to the Halfbakery:

Breast feeding helps new mothers lose weight they gained during pregnancy, but other women could also benefit from this effect. There could be special farms where women receive drugs to induce lactation, and they could be milked, removing unwanted fat from their bodies.

Because toxins are stored in fat, this would also have the benefit of removing toxins from the woman's body. If the milk does not have many toxins, it can be consumed by babies or fetishists. It could be sold in stores as "lady milk" or made into cheese, chocolate, or other fine foodstuffs. This could cover the expense of running the farm and even help the women earn money while they lose weight.

Intellectual activity is also known to burn calories, so women eager to lose the maximum amount of weight, could watch videotaped (or live) physics lectures while being milked.

Anyone know if men could also benefit from this technique? Despite my great idea, I am actually not an expert in human physiology.

Here is an idea I posted to Halfbakery, the site for discussing half-baked ideas:

Evolutionary biologists have pointed out that one reason for diseases of old age is that, in the evolutionary environment, there was no selection against them. Since people tended to die young from violence, bacterial and viral infections, and starvation, and because people were chosen as mates while young, there was no selective pressure against diseases that strike later in life, such as Alzheimer's disease and, to a large extent, heart disease.

We can fix this problem and permanently improve the human race by applying this observation to test-tube babies. Specifically, an individual needn't decide whether to reproduce his or her genes while young. Instead, they could store their eggs or sperm when they are young. When they are ready to have children, they would use the stored gametes of their now elderly relations or other individuals they admire.

For example, one of my grandparents is still alive, alert, and relatively healthy at age 104. He also has many traits that I admire. If I wanted to become a parent, I would have sperm from my grandfather combined with an egg from a long-lived relative of my husband and implanted in my womb. My child (technically also my aunt or uncle) would be biologically related to me but likelier to be much healthier.

While many high-tech fertility techniques increase the medical needs of later generations (by allowing relatively infertile people to pass on their genes), my proposal would reduce future medical needs. After a few generations, enough bad genes may be weeded out for people to go back to having children the natural way, with the human gene pool permanently improved.