Birth weight predicts adult height.

[Unhuman]

This means that if you know how much you weighed as a baby, you'll know your final height.

The following correlation proves that birth weight and height are positively correlated however this study analyzed DUTCH babies, which means that the data is likely biased towards Dutch height standards.

for subjects with birth weight < or = 2,500 g, mean height was 175.7 cm, while for those with birth weight > or = 4,501 g, mean height was 184.1 cm

Birth weight and length as predictors for adult height - PubMed

Adult height has been found to be inversely associated with mortality. Recently, it has been suggested that growth in utero is linked with adult risk of several chronic diseases. The authors examined possible associations between birth weight, birth length, and adult height in young Danish men...

pubmed.ncbi.nlm.nih.gov

In the present study, Non-Hispanic Whites had the highest mean birth weight followed by Hispanics, the North Asians (Korean, Japanese, and Korean), and non-Hispanic Blacks. The South Asians (Asian Indian, Filipino, and Vietnamese) had the lowest mean birth weight. Within each of individual ethnic groups, maternal sociodemographic and health status is significantly associated with their birth weight outcomes, but little impact was noted when examined the ethnic difference in birth outcomes.

Optimal birth weight and term mortality risk differ among different ethnic groups in the U.S. - Scientific Reports

Among European countries, optimal birth weight at which the mortality is minimal is shown to be different by country. We investigated this difference examining one geopolitical population, the U.S. term live births, born to the five groups of the same ethnic parents; White, Black, Hispanic...

www.nature.com

I've also read studies concluding that birth weight is also correlated with adult obesity, this means maximising birth weight likely does not correlate perfectly with adult weight and could lead to a fat child rather than a tall child.