Her Losses make our Gains ashamed — Diet

When one feels ashamed of things he gains, usually they are unsound somewhere. In this poem, it's the losses and gains of one's weight, hinted by Porter in line six. Every porter knows that an empty stomach is the heaviest.

Her Losses make our Gains ashamed－¹
She bore Life's empty Pack
As gallantly as if the East
Were swinging at her Back.
Life's empty Pack is heaviest, ⁵
As every Porter knows－
In vain to punish Honey－
It only sweeter grows.

(F.1602/J.1562)

[1] Her Losses:: her weight losses. Gains:: weight gains.
[2] empty Pack:: empty stomach.
[3, 4] East, swinging:: the east wind that swings her body; east wind, in England and in New England proverbially bleak, unpleasant, and injurious to health _{(OED 1)}.
[5, 6] heaviest, Porter knows:: hunger makes porter's pack the heaviest.
[7] Honey:: sweetmeat, honey cake.
[8] grows:: grows the body weight.

Thus those unadvised young ladies, who, because nature has given them beauty enough, despise all other qualities, and even that regular diet which is ordinarily requisite to make beauty itself lasting, ─ The Young Lady's Own Book (1864)