Rapid changes in the lower face can happen even without weight gain. They may be related to facial fat loss, skin laxity, genetics, stress, hormonal changes, inflammation, sleep, or changes in facial muscle tone. Sometimes what feels like “jowls” is also related to chin/jaw structure or volume loss in the midface. At a healthy BMI of 19–19.5, I would be cautious with any treatment that removes too much fat from the face. Buccal fat removal or aggressive jawline liposuction could make you look older or more hollow over time. If the issue is mild early jowling, non-surgical options may help a little: careful filler or biostimulator for structural support, skin tightening treatments, and good skin care. But these treatments are usually subtle and cannot truly lift loose tissue like surgery can. If there is true lower-face descent, a mini facelift or lower facelift is the most direct option, but it may be too early depending on your age and anatomy. A good surgeon should be conservative and avoid an over-pulled look. My advice would be to see a facial plastic surgeon for an exam and ask whether your concern is true jowling, volume loss, skin laxity, or jaw/chin structure. The safest plan may be subtle support and skin-quality treatment first, rather than aggressive fat removal or early surgery unless the laxity is clearly significant.